@article { author = {Kazemi-Beydokhti, Amin and Hajiabadi, Seyed Hasan and Sanati, Ali}, title = {Surface Modification of Carbon Nanotubes as a Key Factor on Rheological Characteristics of Water-Based Drilling Muds}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {1-14}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28219}, abstract = {This study investigates the effect of functionalized Multi-Walled Carbon NanoTube (f-MWCNT) on rheological properties of water-based drilling muds. Functionalization of multi-walled carbon nanotube was performed by introducing a hydrophilic functional group onto the surface of nanotubes via acid treatment. In order to guarantee the results, X-ray fluorescence, transmission electron microscopy, and thermogravimetric analysis were performed on samples. Temperature and mud density variations were also considered along with the effect of f-MWCNT addition. Furthermore, a novel study was performed on the influence of the degree of functionalization on plastic viscosity and yield stress of drilling mud samples. The results obtained from this study revealed that the addition of f-MWCNT greatly affects the rheological characteristics of water-based drilling muds like plastic viscosity, apparent viscosity, yield stress, and thixotropic properties. Moreover, test results indicated that the shear stress versus shear rate diagram fitted well the Herschel-Bulkley rather than the Bingham plastic model.}, keywords = {Carbon Nanotube,degree of functionalization,water-based drilling fluid,plastic viscosity,yield stress}, url = {https://ijcce.ac.ir/article_28219.html}, eprint = {https://ijcce.ac.ir/article_28219_06453170c9bf97fb11379f0c0e96c79c.pdf} } @article { author = {Farzanfar, Javad and Rezvani, Ali Reza}, title = {Fischer–Tropsch Synthesis with Cu-Co Nanocatalysts Prepared Using Novel Inorganic Precursor Complex}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {15-26}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.31588}, abstract = {The structural properties and activities of Cu-Co catalysts used in Fischer-Tropsch synthesis are explored according to their method of preparation. Impregnation, co-precipitation, and a novel method of thermal decomposition were applied to an inorganic precursor complex to generate the Cu-promoted alumina- and silica-supported cobalt catalysts. The precursors and the catalysts obtained by their calcination underwent powder x-ray diffraction, thermal gravimetric analysis, specific surface area measurement using the Brunauer-Emmett-Teller method, scanning electron microscopy, and Fourier Transform InfraRed (FT-IR) spectroscopy. The catalytic performance of all calcined catalysts used in Fischer-Tropsch synthesis was investigated at 280 to 360 °C. The Cu-Co/SiO2 catalyst was prepared by thermal decomposition of [Cu(H2O)6][Co(dipic)2].2H2O/SiO2, which served as an optimal precursor for synthesis gas conversion into light olefins. The results highlight the advantages of this novel procedure over impregnation and co-precipitation approaches for effective and durable preparation of cobalt catalysts for Fischer-Tropsch synthesis.}, keywords = {Fischer-Tropsch synthesis,Preparation method,Novel precursor,complex,Bimetallic nanocatalyst}, url = {https://ijcce.ac.ir/article_31588.html}, eprint = {https://ijcce.ac.ir/article_31588_d412d67447b947529e5e143e537f2e43.pdf} } @article { author = {Ahmadizadegan, Hashem and Esmaielzadeh, Sheida and Ranjbar, Mahdi}, title = {Improving the Proton Conductivity and Antibacterial Properties of Sulfonated Polybenzimidazole/ZnO/Cellulose with Surface Functionalized Cellulose/ZnO Bionanocomposites}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {27-42}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28570}, abstract = {New bionanocomposite proton exchange membranes were prepared from sulfonated polybenzimidazole (s-PBI) and various amounts of sulfonated ZnO/cellulose nanohybrids (ZnO/cellulose-SO3H). The use of ZnO/cellulose-SO3H compensates for the decrease in ion exchange capacity of membranes observed when non-sulfonated nano-fillers are utilized. The strong –SO3H/–SO3H interaction between s-PBI chains and ZnO/cellulose-SO3H hybrids leads to ionic cross-linking in the membrane structure, which increases both the thermal stability and methanol resistance of the membranes. The ZnO/cellulose -SO3H in the membranes served as spacers for polymer chains to provide extra space for water permeation, so as to bring high permeation rates to the complex membranes. Moreover, the membranes exhibited excellent antibacterial activities against S. aureus and E. coli. A.}, keywords = {sulfonated polybenzimidazole,proton exchange,ZnO/cellulose,Antibacterial}, url = {https://ijcce.ac.ir/article_28570.html}, eprint = {https://ijcce.ac.ir/article_28570_d9e21dc44142358dbdab620f58dac25d.pdf} } @article { author = {Mohadesi, Majid and Moradi, Gholamreza and Davoodbeygi, Yegane and Hosseini, Shokoufe}, title = {Soybean Oil Transesterification Reactions in the Presence of Mussel Shell: Pseudo-First Order Kinetics}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {43-51}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28217}, abstract = {Calcium oxide is one of the appropriate catalysts for biodiesel production. In this study, cheap and compatible with environment catalyst has been used. Mussel shell of Persian Gulf coast is one of the sources of calcium carbonate that is converted to calcium oxide at calcination temperature up to 950°C. Transesterification reaction was carried out at optimum condition of our previous study (calcination temperature of 1050°C, methanol to oil ratio of 24:1 and catalyst to oil ratio of to 12 wt.%) in a 250mL two-necked flask. In this study, the effects of stirrer speed (250 and 350rpm), the reaction temperature (328.15, 333.15, and 338.15K) and reaction time (1, 3, 5, 7 and 8h) on the methyl ester conversion were investigated. The methyl ester conversion, in stirrer speed of 250rpm, reaction temperatures of 328.15 and 333.15K and reaction times of less than 5h is too low. But at the reaction temperature of 338.15K (near to methanol boiling point), the mixing is increased slightly and the reaction occurs at a higher rate and the methyl ester conversion is increased. These results indicate that diffusion has a significant role in the methyl ester conversion rate in the heterogeneously catalyzed reaction. In stirrer speed of 350rpm, the diffusion problem has been solved somewhat and the reaction in the catalyst surface is the controller of the overall reaction rate. In this stirrer speed (350rpm) the methyl ester conversion versus time in all temperature shows pseudo-first-order kinetics. Firstly, the rate was determined at the various temperatures and then the activation energy for the transesterification reaction of soybean oil with methanol was obtained in the presence of mussel shell as the catalyst. Results demonstrate the high precision of the pseudo-first-order kinetics model regard to methyl esters concentration.}, keywords = {Biodiesel,Kinetics,Heterogeneous catalyst,mussel shell,Transesterification}, url = {https://ijcce.ac.ir/article_28217.html}, eprint = {https://ijcce.ac.ir/article_28217_d76d46117553c47ade17297895b4438a.pdf} } @article { author = {Hamed, Othman and Jodeh, Shehdeh and Dagher, Israa and Salghi, Rachid and Azzaoui, Khalil and Al-Hajj, Nisreen and Jodeh, Wade and Warad, Ismail}, title = {Enzymatic Hydrolysis of Olive Industry Solid Waste into Glucose, the Precursor of Bioethanol}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {53-61}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.34840}, abstract = {Olive industry solid waste (OISW) is a by-product generated in the process of olive oil extraction. It is a lignocellulosic material consisting of cellulose, hemicelluloses, lignin and other extractives. In this work, a process for hydrolyzing the OISW into its monomers glucose, the precursor of bioethanol was developed.  The hydrolysis process involves two stages: in the first stage, the OISW was activated by treating it with a material that opened the cellulose structure and made it more accessible for chemical reagents.  Several activating materials were evaluated among them are water, NaOH, Ca(OH)₂ and acetic acid.  In the second stage, the OISW was subjected to an enzymatic treatment which hydrolyzed it into sugar. A combination of the two enzymes cellulase (endo-1,4-β-glucanase) and β-glucosidase was used in the hydrolysis. Best hydrolysis results were obtained at enzymes dose of 15.0 mg of cellulase and 20.0 mg/g of β-glucosidase per one gram of OISW at 45 oC and a pH of 4.8. A yield of 85.02% sugar was obtained from the hydrolysis of 10% NaOH pre-treated OISW under a positive pressure of air.  Whereas, hydrolysis of cellulose extracted from OISW by the Kraft pulping process and bleached using DEHP beaching sequence produced about 95.30% sugar.}, keywords = {Cellulose,Bioethanol,Enzyme,"jeft" olive,Waste,Kraft,Pulping,Bleaching}, url = {https://ijcce.ac.ir/article_34840.html}, eprint = {https://ijcce.ac.ir/article_34840_556594c7a823f1e89626a52cdc81ccb9.pdf} } @article { author = {Suselamma, Akkili and Raja, karredduala and Reddy, Katreddi Hussain}, title = {Synthesis, Characterization, DNA Binding and Nuclease Activity of Cobalt(II) Complexes of Isonicotinoyl Hydrazones}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {63-74}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.33156}, abstract = {Cobalt(II)  complexes of isonicotinoyl hydrazones of two series of ligands have been synthesized and characterized on the basis of elemental analyses, molar conductance, magnetic moment, mass, IR, UV spectral data. Electrochemical behavior of ligands and complexes has been investigated by using cyclic voltammetry. Cyclic voltammetric studies reveal that the oxidation/reduction potentials of all complexes are shifted towards positive or negative values than its corresponding ligands. The interactions of these complexes with calf thymus DNA have been studied by using absorption studies. Bathochromic shift and hypochromism suggest that the intercalative mode of binding of complexes with DNA. Their DNA cleavage activity of complexes was studied on double-stranded pBR322 plasmid DNA using gel electrophoresis experiments in the absence and presence of oxidant (H2O2) and reductant (DTT).}, keywords = {Co(II) complexes,isonicotinoyl hydrazones,Cyclic voltammetry,DNA binding, DNA cleavage}, url = {https://ijcce.ac.ir/article_33156.html}, eprint = {https://ijcce.ac.ir/article_33156_ad175e28b544a7b08bf092860daf3636.pdf} } @article { author = {Nnanwube, Ikechukwu Abuchi and Ayodele, Bamidele Victor and Offor, Uchechukwu Herbert and Akhihiero, Ejiroghene Thelma and Edokpayi, Osariemen}, title = {Evaluation of Biodiesel Blending of Cocos Nucifera Oil Methyl Ester Produced from Alkaline-Catalyzed Transesterification Reaction}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {75-80}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.34850}, abstract = {The prospect of using cocos nucifera Oil for production of biodiesel via transesterification reaction was investigated. The use of ethanol for the transesterification reaction instead of methanol was also evaluated. Test quantities of biodiesel were produced using 100 g, 20.0% and 0.8% of cocos nucifera Oil, ethanol and potassium hydroxide catalyst respectively at 50 °C reaction temperature and 2 h reaction time. The catalyzed transesterification reaction produced biodiesel yield of 10.4%. In order to produce alternative fuel, the biodiesel produced from the cocos nucifera Oil was subsequently blended with petroleum diesel and the blended properties characterized by ASTM standard fuel tests. The property of the blended alternative fuel was determined by comparing cloud point and pour point of the biodiesel blend.}, keywords = {Biodiesel,blending,Cocos nucifera Oil,transesterification reaction,Yield}, url = {https://ijcce.ac.ir/article_34850.html}, eprint = {https://ijcce.ac.ir/article_34850_b16443c7aafb29564bb0a376c002e85a.pdf} } @article { author = {Annapurna Devi, Nambula and Bhanu Radhika, Gidla}, title = {Kinetic Study of Ethyl Hexanoate Synthesis Using Surface Coated Lipase from Candida Rugosa}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {81-92}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.30874}, abstract = {Kinetics of lipase-catalyzed esterification of hexanoic acid and ethyl alcohol using the solvent-free system, surface coated lipase from Candida rugosa, had been studied. The effect of various parameters such as reaction time, reaction temperature, reaction kinetics, water removal and feasibility of solvent-free system had been focused. Candida Rugosa lipase was more effective than other lipases when ethyl hexanoate was synthesized in n-hexane. The highest esterification yield after 72 h (93 %) was achieved at a pH of 5.2 and the esterification yield was reduced to 73% at pH 4.0. The values of the apparent kinetic parameters were computed as Vmax= 0.146 μmol/min/mg enzyme; KM, Acid = 0.296 M; KM, Alcohol = 0.1388 M; Ki, Acid = 0.40 M; and Ki, Alcohol = 0.309 M. The reaction rate could be described in terms of the Michaelis–Menten equation with a Ping-Pong Bi-Bi mechanism and competitive inhibition by both the substrates.}, keywords = {Candida rugosa,ethyl hexanoate,surface coated lipase,Transesterification,kinetic studies}, url = {https://ijcce.ac.ir/article_30874.html}, eprint = {https://ijcce.ac.ir/article_30874_8033016ba0c97a3257bafd50dfca1f50.pdf} } @article { author = {Jafari, Mehran and Irankhah, Abdullah and Mahmoudizadeh, Masoud and Hoshyar, Najmeh}, title = {Effect of Pt on Zn-Free Cu-Al Catalysts for Methanol Steam Reforming to Produce Hydrogen}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {93-100}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.31463}, abstract = {Steam reforming of methanol can be considered as an attractive reaction aiming at hydrogen production for PEM fuel cells. Although Cu/Al-contained catalysts are considerably evaluated in this reaction, further evaluation is essential to evaluate the impact of some promoters like Pt in order to find a comprehensively optimized catalyst. Pt promoter is employed with different methods in this study. Firstly, the amount of Cu loading in Cu/Al ratio is optimized via coprecipitation method. The sample containing 30% wt. of Cu exhibits better performance with methanol conversion of 70% and CO selectivity of 0.44%. Besides, impregnating a different amount of Pt onto Al2O3 reveals an inadequate potential for this reaction. In contrary, doping Pt into Cu/Al catalyst increases the methanol conversion as high as 81% and CO selectivity reaches to approximately zero at 270 °C. In addition, using a dual-bed reactor including Cu/Al and Pt/Al2O3 catalyst displays a relatively satisfactory performance by which the conversion and selectivity are found 83.7% and 1.5%, respectively. In this study, analyses of X-Ray Diffraction, Scanning Electron Microscopy, and BET surface area are used to characterize the synthesized catalysts. }, keywords = {Methanol Steam Reforming,PEM fuel cells,Hydrogen,Dual-bed reactor,Pt,Cu/Al catalyst}, url = {https://ijcce.ac.ir/article_31463.html}, eprint = {https://ijcce.ac.ir/article_31463_365a899c8da2703754c555d482121ee1.pdf} } @article { author = {Shiri, Morteza and Mohamed Heravi, Majid and Zadsirjan, Vahideh and Nejatinezhad-Arani, Atefeh and Shintre, Suhas Ashok and Koorbanally, Neil Anthony}, title = {Pseudo-Five-Component Condensation for the Diversity-Oriented Synthesis of Novel Indoles and Quinolines Containing Pseudo-Peptides (Tricarboxamides)}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {101-115}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28213}, abstract = {A novel series of indole and quinoline tricarboxamides were synthesized using simple and efficient one-pot pseudo-five-component reactions of 2-formylindole or 2-chloro-3-formyl quinolines, isocyanides, amines, and Meldrum’s acid as a CH-acid in CH2Cl2 at room temperature. This conversion has been achieved via the construction of new bonds including two C-C bonds, two C-N bonds, and one C=O bond. Remarkably, three peptide bonds were formed through a domino sequence including Knoevenagel reaction, [1+4] cycloaddition, deacetonation and also, aminolysis reaction. Particularly, a number of structurally remarkable and pharmacologically significant products were provided in excellent yields.}, keywords = {2-formylindole,2-chloro-3-formyl quinolone,isocyanides,Meldrum’s acid,multicomponent reaction,tricarboxamide}, url = {https://ijcce.ac.ir/article_28213.html}, eprint = {https://ijcce.ac.ir/article_28213_fe78afbfbacb0eb77ccffc182226c60b.pdf} } @article { author = {Rahbari-Sisakht, Masoud and Emadzadeh, Daryoush and Fauzi Ismail, Ahmad and Korminouri, Fatemeh and Matsuura, Takeshi and Mayahi, Ali Reza}, title = {Influence of Air-Gap Length on CO2 Stripping from Diethanolamine Solution and Water Performance of Surface Modified PVDF Hollow Fiber Membrane Contactor}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {117-129}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28220}, abstract = {Surface Modifying Macromolecule (SMM) blended PVDF hollow fibers (HFs) were spun at different air-gaps (o to 20 cm) and used for CO2 stripping from aqueous DEA solution and water. The manufactured fibers were first subjected to various characterization tests such as contact angle and critical water entry pressure measurement to evaluate the HF hydrophobicity and wetting resistance, respectively. The pure helium permeation experiments were also conducted to obtain membrane pore size and effective porosity. Morphology of the HFs was investigated by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). The SEM images showed that both outer and inner diameters of HFs decreased significantly by increasing air-gap length which mainly because of elongation of HF caused by gravity while traveling through the air–gap. Also, the gradual decrease in roughness on the external surface of the produced HFs was observed from the AFM images.  It was found that the increase of liquid velocity enhances the CO2 stripping flux. It was found that 10 cm air-gap gave maximum stripping flux of 3.34×10-2 and 1.34×10-3 (mol/m2 s) for DEA solution and water, respectively. The increase in gas velocity, on the other hand, did not affect the stripping flux significantly. It was observed that the increase of temperature from 25 to 80 oC led to marked enhancement of stripping flux from 6.30×10-3 to 3.34×10-2 (mol/m2 s) and 6.5×10-5 to 1.34×10-3 (mol/m2 s), for DEA solution and water, respectively. Furthermore, the increase in DEA concentration from 0.25 to 1 mol/L, led to enhancement of the stripping flux from 6.84×10-3 to 3.34×10-2 (mol/m2 s) at a liquid velocity of 0.7 m/s. It was concluded that the HF spun at 10 cm air-gap exhibited the best stripping performance among all fabricated HFs.}, keywords = {PVDF hollow fiber,CO2 stripping,Membrane contactor,air-gap length}, url = {https://ijcce.ac.ir/article_28220.html}, eprint = {https://ijcce.ac.ir/article_28220_a3238812ff94e520f2fbfd4eca93b43b.pdf} } @article { author = {Al-Abdullah, Jamal and Al Lafi, Abdul Ghaffar and Alnama, Tasneem and Al Masri, Wafa’a and Amin, Yusr and Alkfri, Mohammed Nidal}, title = {Adsorption Mechanism of Lead on Wood/Nano-Manganese Oxide Composite}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {131-144}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.35073}, abstract = {Discharge of untreated industrial wastewater containing heavy metals such as Pb2+ is hazardous to the environment due to their high toxicity. This study reports on the adsorption, desorption, and kinetic study on Pb2+ removal from aqueous solutions using wood/Nano-manganese oxide composite (WB-NMO). The optimum pH, contact time and temperature for adsorption were found to be 5.0, 4 h and 333 K, respectively. Pseudo-second-order kinetics best described the adsorption process with an initial sorption rate of 4.0 mg g min-1, and a half-adsorption time t1/2 of 31.6 min. Best fit for adsorption isotherm was obtained with the Brunauer-Emmett-Teller (BET) model with a maximum adsorption capacity of 213 mg/g for an initial metal concentration of 60 mg/L. Both intra-particle diffusion and film diffusion contribute to the rate-determining step. Desorption experiments with 0.5 mol/L HCl, inferred the reusability of the composite. Adsorption experiment of Pb2+ from industrial wastewater confirmed that the prepared WB-NMO is a promising candidate for wastewater treatment. The WB-NMO demonstrated high Pb2+ removal efficiency and is considered as a promising alternative and reusable composite for lead removal from contaminated effluents.}, keywords = {wood,Manganese oxide,Adsorption,Kinetics,Lead}, url = {https://ijcce.ac.ir/article_35073.html}, eprint = {https://ijcce.ac.ir/article_35073_14b481a26fc88ad211779fe9bd388fd1.pdf} } @article { author = {G, Vijayaraghavan and S, Shanthakumar}, title = {Effective Removal of Acid Black 1 Dye in Textile Effluent Using Alginate from Brown Algae as a Coagulant}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {145-151}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.35074}, abstract = {In this study, the Acid Black 1 dye containing effluent collected from a dyeing unit was examined with the alginate extracted from the marine brown algae, Sargassum sp. for its removal. Batch experiments were carried out using standard Jar test apparatus. Fourier Transform InfraRed (FT-IR) Spectroscopy and Scanning Electron Microscopy (SEM) techniques were used to characterize the raw alginate and dye-loaded alginate after the coagulation process. The optimum condition for maximum colour removal of 96.8 % was found to be at 40mg/L of alginate dose, 6g/L of calcium dose and 30 minutes of settling time for the pH of 4.2. The experimental data were analyzed with the first and second order kinetic model and kinetic study on the coagulation process reveals that it follows the second-order kinetic model. The results revealed that alginate extracted from marine brown algae Sargassum sp has the coagulation potential for effective removal of Acid Black 1 dye.}, keywords = {Acid Black 1 Dye,marine brown algae,Coagulation,Kinetics}, url = {https://ijcce.ac.ir/article_35074.html}, eprint = {https://ijcce.ac.ir/article_35074_994666df6f80804071f220305183fe18.pdf} } @article { author = {Guerra Rodríguez, Luis Eduardo and Ventura Muñoz, Minerva and González Suárez, Erenio and Rosselló Matas, Carmen and Carbajal Arizaga, Gregorio}, title = {Citric Acid Removal from Aqueous Solution with Layered Aluminum Hydroxide Crystals}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {153-161}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.31044}, abstract = {Aluminum hydroxide is a compound with diverse crystalline structures, some of which demonstrate the ability to remove chemicals from aqueous solutions. In this research, aluminum hydroxide with the Bayerite structure was synthesized and used to remove Citric Acid (CA). This structure was not modified under the reaction conditions where CA ranged from 2 to 6 mg of CA in 20 mL of water, the temperature ranged from 30 to 90 °C, and time ranged from 8 to 24 h. The constants in the Freundlich model indicated that adsorption is the phenomenon governing the CA capture by aluminum hydroxide. According to infrared spectroscopy data, adsorption of CA was produced by the hydrogen bond of hydroxyl groups in aluminum hydroxide with either carboxylate or carboxylic groups in CA. The highest removal of CA was 92.12% and the temperature was the only factor with an effect on the percentage of CA removal.}, keywords = {Citric acid,Adsorption,Separation,Aluminum hydroxide}, url = {https://ijcce.ac.ir/article_31044.html}, eprint = {https://ijcce.ac.ir/article_31044_dbe59099947a2eb5fd8764ed1f2d59f0.pdf} } @article { author = {Özcan, Gülcan and Özcan, Mehmet Musa}, title = {The Total Phenol, Flavonol Amounts and Antiradical Activity of some Oreganum Species}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {163-168}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.35091}, abstract = {Total phenol contents of O.vulgare were found between 54.23 mg GAE/g (U4) and 124.55 mg GAE/g (U2), respectively. While total phenol contents of O.minutiflorum change between 49.50 mg GAE/g (U5) and 126.92 mg GAE/g (S3), total flavonol contents were found between 623.87 mg RE/g (U5) and 854.53 mg RE/g (U2). Antioxidant capacity ranged from 42.31 mg AAE/g (U5) to 103.04 mg AAE/g (S3). Total phenol contents of O. majorana changed between 51.86 mg GAE/g (S3) and 125,23 mg GAE/g (S2). Antiradical activity and antioxidant capacity values were found between 695.85 IC50= mg/mL (U5) and 1217.51 IC50= mg/mL S3 and 55.43 mg AAE/g (S3) to 110.90 mg AAE/g (U5), respectively.}, keywords = {Total phenol,flavonol,antioxidant capacity,antiradical activity}, url = {https://ijcce.ac.ir/article_35091.html}, eprint = {https://ijcce.ac.ir/article_35091_70c2a0314d50f1939ef161000259ca37.pdf} } @article { author = {Takhti, Samaneh and Pordel, Mehdi and Ebrahimi, Mahmoud}, title = {Selective Speciation of Ferric Iron by a New Heterocyclic Ligand}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {169-174}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28569}, abstract = {The synthesis and analytical applications of the new heterocyclic ligand are described. The complexation reaction of the ligand with some cations was studied in aqueous methanol at room temperature using the spectrophotometric method. Results revealed that only the absorption spectra of the Fe (III)–ligand complex show a high redshift of the absorption maximum in the aqueous methanol solution and the compound reacts with Fe (III) to produce a deep green complex (1:2 mol ratio of Fe(III)/ligand). Furthermore, a highly sensitive, selective and rapid spectrophotometric method is described for the determination of trace amounts of Fe (III) by using the ligand.}, keywords = {3H-imidazo[4',5':3,4]benzo[1,2-c]isoxazole,Complexation reaction,Iron (III) complex,Absorption spectra,Selective detection}, url = {https://ijcce.ac.ir/article_28569.html}, eprint = {https://ijcce.ac.ir/article_28569_ed1e3a4cd1daeeafc735021782c2a73f.pdf} } @article { author = {Rashidi Moghaddam, Hamed and Baghalha, Morteza}, title = {Platinum Extraction Modeling from Used Catalyst by Iodine Solutions}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {175-182}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.30586}, abstract = {Platinum extraction from spent reforming catalysts in iodine solutions under atmospheric pressure at different temperatures, acid concentration, and iodine spices concentration, catalyst particle size, and impeller agitation speed have been studied in our group. In this system, platinum is oxidized from spent catalyst with I3¯ that is formed from the reaction of I2 and I¯ to produce PtI6-2 as its main product. It is obvious that some of the platinum ions in aqueous solution are precipitated as PtI4, especially at high temperatures. Power-law rate equation was used in extraction and precipitation reactions for kinetic modeling. The effect of temperature was studied using the Arrhenius equation. The activation energy for the platinum surface dissolution reaction was calculated as 53 kJ/mol in extraction reaction which indicated that the rate determining step is surface chemical reaction step. The reaction order was 3.01 for platinum concentration in solid and 0.45 for the hydrogen ion concentration, 0.1 for the iodine spices concentration in extraction reaction and 0.54 for platinum ions concentration in precipitation reaction. This model shows good agreement with experimental data.}, keywords = {Kinetics,Pt Extraction,Iodine Solution,Platinum-iodine Ions Precipitation,Power-Law equation}, url = {https://ijcce.ac.ir/article_30586.html}, eprint = {https://ijcce.ac.ir/article_30586_44cc038007640a37042c4f14230fc2fa.pdf} } @article { author = {Dehestani, Maryam and Pourestarabadi, Sedigheh and Zeidabadinejad, Leila}, title = {Theoretical Study of the Molecular Complexes between Pyridyne and Acid Sites of Zeolites}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {183-192}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.31174}, abstract = {The main interaction between pyridine and zeolites leads to form a hydrogen bond between the N atom of pyridine and OH groups of zeolites. The present work reports a theoretical study about the structural, vibrational and topological properties of the charge distribution of the molecular complexes between pyridine and a series of acids sites of zeolites. The calculated structural parameters are the highest occupied molecular orbital energy (EHOMO), lowest unoccupied molecular orbital energy (ELUMO), energy gap (ΔE), hardness (η), softness (S), the absolute electronegativity (χ), the electrophilicity index (ω) and the fractions of electrons transferred (ΔN) from zeolites molecules to pyridine. We show N atom of pyridine attacks to the H atom of the OH bridged group of zeolite clusters.}, keywords = {Pyridine,Zeolites, MP2,Fukui function}, url = {https://ijcce.ac.ir/article_31174.html}, eprint = {https://ijcce.ac.ir/article_31174_ff1cd38bb2d5d600cf05da8b4761ebae.pdf} } @article { author = {Hatami, Mohammad and Mosayebidorcheh, Sobhan and Jing, Dengwei}, title = {Nanofluid Condensation and MHD Flow Modeling over Rotating Plates Using Least Square Method (LSM)}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {193-203}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.30588}, abstract = {In this study, nanofluid condensation and MHD flow analysis over an inclined and rotating plate are investigated respectively using Least Square Method (LSM) and numerical method. After presenting the governing equations and solving them by LSM, the accuracy of results is examined by the fourth order Runge-Kutta numerical method. For condensation, modeling results show that the condensate film thickness is reduced and in turn, the rate of heat transfer is enhanced by the addition of nanoparticles to the regular fluid. Effect of normalized thickness on velocity and temperature profiles reveals that increasing normalized thickness leads to an increase in f, f’ and a decrease in g, q. Effect of normalized thickness on k and s are similar to those of f’ and g, respectively.}, keywords = {nanofluid,LSM,condensation,Nusselt number,Heat Transfer}, url = {https://ijcce.ac.ir/article_30588.html}, eprint = {https://ijcce.ac.ir/article_30588_677f107fd2bc0f0bd7d504817bb641bd.pdf} } @article { author = {Noorpoor, Ali Reza and Mazare, Fatemeh}, title = {Conventional and Advanced Exergetic and Exergoeconomic Analysis Applied to an Air Preheater System for Fired Heater (Case Study: Tehran Oil Refinery Company)}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {205-219}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28879}, abstract = {TThe present paper evaluates the plan of combustion air pre-heater installation on the fired heater from thermodynamics and thermos-economics point of view. As a real case study, one of the fired heaters (H_101) of Distillation unit in Tehran Oil Refinery, Iran, is intended. With applying an air pre-heater in this study, flue gases temperature falls down from 430 ºC to 200ºCand combustion air temperature grows up from 25ºCto 350 ºC. By examining the energy and exergy analyses before and after the installation of air pre-heater, the increase in thermal efficiency by 20% and exergy efficiency by 37% and accordingly decreasing fuel consumption by 20% is observed. It is also indicated that the most exergy destruction is accrued in the fired heater (57.24%). In this study for the first time, based on advanced exergy analyses and concepts of endogenous/exogenous and avoidable/unavoidable parts, exergy destruction, exergy destruction cost rates and capital investment of combustion air preheater system are found which results show the endogenous and unavoidable parts in overall system are dominant. Also, the effect of flue gases temperature (T5) on the system performance is investigated through sensitivity analyses. It is seen that with rising T5, thermal efficiency and exergy efficiency in real, theory and unavoidable conditions decrease. The results demonstrate the majority parts of exergy destruction in fired heater and air preheater is endogenous, unavoidable and unavoidable endogenous. Considering the cost of air preheater and related equipment and operating and maintenance costs annually, the payback period is estimated to be less than 2 years. In this research, the EES and Excel were applied to calculate the amount.}, keywords = {Air pre-heater,thermal efficiency,Exergy Efficiency,Exergy analyses,Advanced exergy analyses}, url = {https://ijcce.ac.ir/article_28879.html}, eprint = {https://ijcce.ac.ir/article_28879_b00f4533f8ddafc4cc847ce1117f9281.pdf} } @article { author = {Zamani, Sahar and Rahimi, Mahmood Reza and Sadeghi, Hossein}, title = {Drying of Matricaria recutita Flowers in Vibrofluidized Bed Dryer: Optimization of Drying Conditions Using Response Surface Methodology}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {221-233}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28216}, abstract = {Drying of Matricaria recutita flower was investigated experimentally in a VibroFluidized Bed Dryer (VFBD). The aim of the present work was to optimize the best operating conditions for the drying of Matricaria recutita flower in the VFBD based on experimental design techniques. Response Surface Methodology (RSM) and Central Composite Design (CCD) based on 4-variable with 5-level have been employed to achieve the desirable possible combinations of frequency of vibration (7-15 Hz), inlet air temperature (36-68 °C), air flow rate (16-24 m3/h), and drying time (30-70 min) for the highest responses in terms of moisture removal (MR) and thermal efficiency (). A full quadratic model was used to describe the effects of individual and interactive parameters on the responses. The analysis of the obtained results showed that the inlet air temperature has the largest effect on responses. The optimal process parameters were as follows: frequency of vibration of 10.88 Hz, inlet air temperature of 64.08 °C, air flow rate of 20.63 m3/h and drying time of 69.11 min in which the predicted value for the MR (%) and  (%) was 86.76 and 53.05, respectively. The proposed optimal conditions were examined in the laboratory and MR (%) and  (%) achieved as 87.12±0.25% and 52.78±0.34%, respectively. The experimental values agreed with those predicted by RSM models, thus indicating the suitability of the model employed and the success of RSM in optimizing the drying conditions.}, keywords = {Matricaria recutita flower,Response surface methodology,Vibrofluidized bed dryer,Moisture removal,thermal efficiency}, url = {https://ijcce.ac.ir/article_28216.html}, eprint = {https://ijcce.ac.ir/article_28216_749887283e4d4b5ddfde3e925e6a07d4.pdf} } @article { author = {Mohammadian-Abriz, Ali and Majdan-Cegincara, Roghayeh}, title = {Modeling the Transport and Volumetric Properties of Solutions Containing Polymer and Electrolyte with New Model}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {235-252}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.28218}, abstract = {A new theoretical model based on the local composition concept (TNRF-mNRTL model) was proposed to express the short-range contribution of the excess Gibbs energy for the solutions containing polymer and electrolyte. This contribution of interaction along with the long-range contribution of interaction (Pitzer-Debye-Hückel equation), configurational entropy of mixing (Flory-Huggins relation) and Eyring absolute rate theory were used to fit the viscosity values of ternary aqueous solutions of polymer + electrolyte with considering temperature dependency. The local composition models which are available for correlating the thermodynamic properties of ternary polymer + electrolyte solutions (ternary-Wilson, ternary-modified NRTL, and ternary-modified Wilson) with Eyring absolute rate theory were also used for fitting the viscosity values of ternary solutions for the first time. THe fitting quality of Eyring-TNRF-mNRTL model was compared with these models. The equations of apparent molar volume were also derived from TNRF-mNRTL, ternary-Wilson, ternary-modified NRTL, and ternary-modified Wilson models. These equations were used for correlating the apparent molar volume and density values of ternary polymer + electrolyte solutions.}, keywords = {Modeling,Viscosity,Density,solutions,TNRF-mNRTL model}, url = {https://ijcce.ac.ir/article_28218.html}, eprint = {https://ijcce.ac.ir/article_28218_7854e134555468ae9540b61ac7c418e5.pdf} } @article { author = {Çetinyokuş, Saliha}, title = {Consequences Modeling of the Akçagaz Accident through Land Use Planning (LUP) Approach}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {37}, number = {4}, pages = {253-264}, year = {2018}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2018.35109}, abstract = {In the study, consequences analysis of Akçagaz LPG Facilities accident was conducted.  The consequences analysis, modeling studies were performed by the use of EFFECTS 10.0 Software over two liquefied gas LOC (Loss of Containment) scenarios. One of the scenarios was G1: Instantaneous release corresponding to BLEVE (Boiling Liquid Expanding Vapor Explosion) and the other was G2: Release in 10 min corresponding to UVCE (Unconfined Vapor Cloud Explosion). The highest threat zone distance (1kW/m2 heat radiation distance) was determined as 1699 m, the lethal burn distance as 377 m and distance from the center cloud to threshold overpressure as 342.46 m with the G1 scenario. French, Italian and Austrian methodologies relating to LUP (Land Use Planning) context of the Seveso Directive, which was not implemented in Turkish legislation, were evaluated for BLEVE of The Akçagaz Accident. Three different modeling approaches for BLEVE including static, dynamic and rupture of the vessel were used and the results were compared to the LUP methodology. The value (height of the fire ball: 273m) closed to the actual accident situation (height of the fire ball:200-300m) was obtained with the use of the static modeling approach. The distance access to fragments of the tank was calculated as 409 m with the use of rupture of vessel modeling approach which was compatible with the actual accident value (~500m). High lethality, the beginning of lethality, irreversible effects, indirect/reversible effects radius of The Akçagaz Accident were calculated for each country LUP methodology. The determined distances with the use of static BLEVE model correlation were obtained at the highest value again. High lethality radius was determined for French and Italian as 173.37 m and 86.13 m, respectively. The LUP methodology used in France is said to be more restrictive based on the large impact distances. On the other hand, when the TOTAL specifications (GS EP SAF 253& 262) are considered, which are dependent on demand but very important, the threshold values for health effects are seen to be much more stringent.}, keywords = {LPG,BLEVE,VCE,Consequences Analysis,The Akçagaz Accident,LUP (Land Use Planning)}, url = {https://ijcce.ac.ir/article_35109.html}, eprint = {https://ijcce.ac.ir/article_35109_8d77593f844d0b3a9f66d0a2a6342f05.pdf} }