@article { author = {Kheshti, Zeinab and Hassanajili, Shadi and Shahrashoob, Zahra}, title = {Facile and Economic Method for the Preparation of Core-Shell Magnetic Mesoporous Silica}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {1-9}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32404}, abstract = {In this work core-shell structure Fe3O4@SiO2@meso-SiO2 microsphere has been successfully prepared. An inorganic magnetic core has been coated with multi-shell structure, dense nonporous silica as an inner layer and mesoporous silica as an outer layer. The dense silica shell can enhance the stability and minimize the negative effect of acidic conditions on the inner core and the porous outer shell can provide high surface area and enhance the loading of a functionalized group. Cetyltrimethylammonium bromide (CTAB) has been used as a pore-forming agent and a modified methodology was adopted to improve the extraction condition of this kind of surfactant. The as-prepared microspheres were characterized by Field Emission Scanning Electron Microscope (FESEM), X-Ray Diffraction (XRD), Fourier Transform InfraRed (FT-IR) spectroscopy, Vibration Sample Magnetometer (VSM), N2 adsorption-desorption, and Particle Size Analyzer (PSA). The resulted materials possessing uniform core-shell structure, and well preserved structural stability. Additionally, they can be collected readily by using an external magnetic field. The prepared material has considerable potential applications in various fields including catalysis, drug delivery, and water treatment. }, keywords = {Magnetic Fe3O4,Core-shell structure,Mesoporous silica,nanoparticles,Solvent extraction}, url = {https://ijcce.ac.ir/article_32404.html}, eprint = {https://ijcce.ac.ir/article_32404_36dc7133b9242c02ee801d2cd8c069b2.pdf} } @article { author = {Jindal, Shikha and Giripunje, Sushama Milind and Kondawar, Subhash Baburao}, title = {Electronic and Optical Properties of Size-Controlled ZnO Nanoparticles Synthesized by a Facile Chemical Approach}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {11-20}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.34272}, abstract = {Facile low-temperature chemical route for the synthesis of ZnO nanoparticles is reported in this paper. Morphologically uniform and spherical shape with an average particle size of 8.8 nm and wurtzite phase with the crystalline structure of as-synthesized ZnO nanoparticles were confirmed by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The optical properties of ZnO nanoparticles were analyzed by UltraViolet Visible (UV-Vis) absorption and PhotoLuminescence (PL). The as-synthesized ZnO nanoparticles showed orange light-emitting properties when excited at 400 nm due to the well overlapping of electron and hole wave function across the compatible size of the particle of ZnO and the optical energy band gap of 3.5 eV due to quantum confinement. X-ray Photoelectron Spectroscopy (XPS) and Ultraviolet Photoelectron Spectroscopy (UPS) were used for the elemental, molecular and energetic information of ZnO nanoparticles. UPS analysis depicted the energy level position of ZnO nanoparticles whereas XPS spectra showed the presence of constitute elementals with the stoichiometric atomic % of Zn and O. The elemental composition was also confirmed by the EDS analysis. The significant Raman shifts for as-synthesized ZnO nanoparticles in the typical Raman-active modes of vibration assigned to the wurtzite crystal nanostructure of ZnO. }, keywords = {Zinc oxide,nanoparticles,XPS,UPS,Raman spectra}, url = {https://ijcce.ac.ir/article_34272.html}, eprint = {https://ijcce.ac.ir/article_34272_f090efbc22de88036157abf7799df9dd.pdf} } @article { author = {Akhtar, khalida and Shah, Arif and Zubair, Naila and Javed, Kanwal}, title = {Chemical Dynamics of Monodispersed Iron Oxide Nanoparticles}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {21-30}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32389}, abstract = {This study is comprised of the synthesis and characterization of uniform fine particles of iron oxide in different shapes and sizes. Varying amounts of iron (III) chloride and sodium dihydrogen phosphate was heated at 98 oC for various periods, following the forced hydrolysis method. Scanning electron microscopic analysis showed that the shape and size of the precipitated particles were dependent on the applied experimental conditions. Selected batches of the synthesized particles were characterized by various physical methods i.e., XRD, FT-IR, electrophoretic mobility to confirm their identity. The high concentration of phosphate ions tended the particles to grow lengthwise so as the morphology of the precipitated particles change from spherical (axial ratio 1) to ellipsoidal (axial ratio 6) shape. The excess amount of ferric chloride in the reaction, medium facilitated the growth of the primarily formed particles. The particle size increased with aging and attained a limiting value in 94 h. All the solids were crystalline and the observed peaks in the XRD patterns corresponded to iron (III) oxide. These findings are important in developing a facile and robust method for the synthesis of monodispersed particles of various metal oxides and controlling their size and shape.}, keywords = {Hematite,forced hydrolysis,uniform nanoparticles,electrophoretic mobility}, url = {https://ijcce.ac.ir/article_32389.html}, eprint = {https://ijcce.ac.ir/article_32389_4d4bf9a31c159baf1b3d85c778e0bbb3.pdf} } @article { author = {Zarei, Shahrbanoo and Rezanejade Bardajee, Ghasem and Sadeghi, Mohamad}, title = {Montmorillonite Nanocomposite Hydrogel Based on Poly(acrylicacid-co-acrylamide): Polymer Carrier for Controlled Release Systems}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {31-43}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32092}, abstract = {In this paper, the synthesis of new montmorillonite nanocomposite hydrogel (MMTNH) based on poly (acrylic acid-co-acrylamide) grafted onto starch, is described. Montmorillonite (MMT) as nanometer base, acrylic acid (AA) and acrylamide (AAm) as monomers, ammonium persulfate (APS) as an initiator, N,N-methylenebisacrylamide (MBA) as a crosslinker and starch as a biocompatible polymer were prepared in aqueous solution and their amounts were optimized to attain the highest water absorbance. The optimized swelling capacity in distilled water was found to be 810 g/g. A mechanism for hydrogel formation was proposed and the structure of the product was confirmed using a set of techniques including FT-IR spectroscopy, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, and X-ray powder diffraction. Furthermore, the swelling behaviors of the nanocomposite at different pHs, various salt with different concentrations, the mixture of solvents, were investigated. The methylene blue (MB) dye was used as model drugs to assess the loading and release by MMTNH. The pH response of this MMTNH makes it suitable for acting as a controlled delivery system. The results suggest MMTNH may find applications as promising drug delivery vehicles for drug molecules.}, keywords = {Nanocomposite hydrogel,Montmorillonite,Starch,Swelling behavior,Release}, url = {https://ijcce.ac.ir/article_32092.html}, eprint = {https://ijcce.ac.ir/article_32092_82568371c34ce7ce3bcf2f8a27cdd171.pdf} } @article { author = {Shahabi, Javad and Akbarzadeh, Azim and Heydari Nasab, Amir and Ardjmand, Mehdi}, title = {Doxorubicin Loaded Liposomal Nanoparticles Containing Quantum Dot for Treatment of Breast Cancer}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {45-53}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.33221}, abstract = {In addition to increasing the efficacy of various drugs, Nanoparticles reduce their side effects. In this study, different nanoparticle formulations of Doxorubicin anticancer drugs were prepared. The efficacy of the formulations produced in the cell culture medium was studied compared with the free drug. Reverse phase evaporation was used to form the liposome containing doxorubicin. The graphite nanoparticles were prepared. These nanoparticles were mixed with the liposome containing doxorubicin, and the related Nano-complex was conjugated. Spectroscopy methods for visible light-ultraviolet, light and light dynamics differentiation were used to describe nanoparticles. For the toxicity of different formulation, MTT and MCF-7 cells were used. The amount of drug loading in the liposomes was 72%. The largest amount was related to the Nano-conjugated complex and the smallest size was related to the graphene-oxide nanoparticle with a nanometer size. The controlled release in 96 hours and the amount of drug release was 95.43%. Doxorubicin-containing liposome toxicity was 75% and Nano- conjugated complex was 85%, at the lowest drug concentration (10µM). The free drug created 35% cell toxicity in 10µM and 89% in 2500µM. The results of the study showed Liposomes act as a suitable nanoparticle for doxorubicin. It was found that the effect of nanoparticles of graphene oxide is very important. In the presence of this nanoparticle in the complex, toxicity increased significantly.}, keywords = {Graphene oxide nanoparticles,liposomes,doxorubicin}, url = {https://ijcce.ac.ir/article_33221.html}, eprint = {https://ijcce.ac.ir/article_33221_21ea6561b520fe19d1a0db04832972be.pdf} } @article { author = {Valiollahi, Mir-Hasan and Abbasian, Mojtaba and Pakzad, Mousa}, title = {Synthesis and Characterization of Polyaniline-Polystyrene-Chitosan/Zinc Oxide Hybrid Nanocomposite}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {55-64}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.33283}, abstract = {A hybrid nanocomposite composed of polyaniline-polystyrene-chitosan/zinc oxide was prepared via a simple in situ polymerization method. The synthesized copolymers were analyzed using Fourier Transform InfraRed (FT-IR), and UltraViolet-Visible (UV–Vis) spectroscopies, ThermoGravimetric Analysis (TGA), and Field Emission Scanning Electron Microscopy (FE-SEM), X-ray diffraction, energy dispersive,  X-ray photoelectron spectroscopy and cyclic voltammetry. The chemical bonding established between polyaniline-polystyrene and polyaniline-polystyrene-chitosan/zinc oxide, confirmed by FT-IR, is likely to be responsible for the enhanced chemical stability. From SEM observation, the ratio of ZnO nanoparticles to nanocomposite altered the morphology of the hybrids from granular to plate-like structure, which was confirmed by EDXS. The thermal property was studied using TG/DTA analysis shows the residual weight (TGA curves) and its weight derivative (DTA curves) of the polyaniline-polystyrene-chitosan/zinc oxide are more stable than chitosan and polyaniline-polystyrene-chitosan. Also, the cyclic voltammetry on the obtained hybrid materials revealed that the plate-like structure was more advantages for electrochemical stability. Overall, the results show that the introduction of the ZnO nanoparticles into the polyaniline-polystyrene-chitosan matrix enhanced the thermal and electrode stability.}, keywords = {Hybride nanocomposite,Polyaniline,Polystyrene,Chitosan,Zinc oxide}, url = {https://ijcce.ac.ir/article_33283.html}, eprint = {https://ijcce.ac.ir/article_33283_60d63e12fdb14cf37e53d220f187fc72.pdf} } @article { author = {Asadian, Matineh and Davoodnia, Abolghasem and Beyramabadi, S. Ali and Khojastehnezhad, Amir}, title = {The First Pyrazolium-Based Ionic Liquid Containing Phosphotungstic Acid Immobilized on CuFe2O4@SiO2: A Recyclable Organic-Inorganic Nanohybrid Catalyst for the Synthesis of Polyhydroquinolines}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {65-77}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32299}, abstract = {A new magnetically separable organic-inorganic nanohybrid catalyst denoted as CuFe2O4@SiO2@C3-Pyrazole-C4SO3-H2PW was successfully prepared by grafting of a functionalized ionic liquid containing a pyrazolium cation with a phosphotungstic counter-anion H2PW12O40¯ (H2PW) on silica-coated copper ferrite magnetic nanoparticles (CuFe2O4@SiO2). The prepared catalyst was fully characterized using scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray analysis, inductively coupled plasma optical emission spectrometry, Fourier transform infrared spectroscopy, and vibrating sample magnetometry. The catalytic activity of CuFe2O4@SiO2@C3-Pyrazole-C4SO3-H2PW as a novel heterogeneous catalyst was probed in the synthesis of polyhydroquinolines by one-pot condensation of dimedone, an aromatic aldehyde, ammonium acetate, and ethyl acetoacetate. The results demonstrated a significant catalytic performance of the catalyst for this transformation under solvent-free conditions, giving high yields of the products over short reaction time. Also, the magnetic nanocatalyst could be easily recovered from the reaction mixture and reused many times with no significant loss of its catalytic activity.}, keywords = {CCuFe2O4@SiO2@C3-Pyrazole-C4SO3-H2PW,Ionic liquid,Magnetic nanoparticles,polyhydroquinolines}, url = {https://ijcce.ac.ir/article_32299.html}, eprint = {https://ijcce.ac.ir/article_32299_c75d2472784d47bf620badde69208216.pdf} } @article { author = {Ahmad, Khalil and Alt, Helmut}, title = {Diamido Complexes of Titanium and Zirconium as Catalyst Precursors for Ethylene Polymerization}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {79-90}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.34241}, abstract = {A series of 8 new complexes of titanium and zirconium with diamido ligands bearing an ethylene and propylene bridge between the two amido groups were synthesized and tested for ethylene polymerization. Titanium complexes bearing an ethylene bridge between the two amido groups showed higher activities than the derivatives with a propylene bridge. In the case of the zirconium complexes, the propylene bridged complexes were more active than the corresponding ethylene bridged. The introduction of bulky groups on the ligand structure resulted in an increase in the activity. DFT calculations were performed to determine the activation energy barriers for different reaction steps. The calculated activation energy for the insertion of ethylene into an M-CH3 bond is in the range of 12.2-16.8 kcal/mol and the activation energy for the chain termination via β-H transfer reaction is 12.5-14.4 kcal/mol.}, keywords = {Diamido,titanium,zirconium,ethylene polymerization,experimental and DFT studies}, url = {https://ijcce.ac.ir/article_34241.html}, eprint = {https://ijcce.ac.ir/article_34241_620bfed2a92b342973fcb9078e0cfc89.pdf} } @article { author = {Ebrahimzadeh Rajaei, Gholamreza and Vojood, Arash}, title = {Investigation of the Specific Ion Interactions and Determining Protonation Constant of 3,5-Dihydroxy-2-(3,4,5-trihydroxybenzoyl)oxy-6-[(3,4,5-trihydroxybenzoyl)oxymethyl] oxan-4-yl] 3,4,5-trihydroxybenzoate at Different Ionic Strength}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {91-98}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32278}, abstract = {In this research, the protonation constant value of tannic acid was determined at 25 °C and different ionic strengths (0.1 to 0.7 mol/dm3 NaCl) using potentiometric titration technique. The dependence of protonation constant on ionic strength was modeled and discussed by a Debye-Hückel type equation. Then, based on the obtained data from experiments, the minimizing Sum of Squares Error (SSE) was done by Microsoft's Excel solver program and the most suitable model was chosen. After optimization, the protonation constant of tannic acid at different ionic strengths was calculated and curves of log Kcal and log Kexp were compared. Finally, Daniele constants of C and D were measured and the Specific Ion interaction Theory (SIT) was assessed for this weak acid. The obtained results show that the protonation constants of tannic acid decrease with increasing ionic strength.}, keywords = {Tannic acid,Potentiometric titration,Debye-Hückel equation,Ionic strength effect,SIT}, url = {https://ijcce.ac.ir/article_32278.html}, eprint = {https://ijcce.ac.ir/article_32278_d319348f858f6878dafbfafa568143f8.pdf} } @article { author = {Rajaeian, Elahe}, title = {Kinetic Study of Reactions between Nitrile Oxides with Simple Cycloalkynes with DFT Method}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {99-110}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32093}, abstract = {In this study, reactions of the simple cycloalkynes with substituted Nitrile Oxides, by DFT method will be discussed. The investigation of the structural properties, theoretical thermodynamic and kinetic data, i.e., the activation free energies(DG*), the free energies changes of reaction(DrG) and rate constants of the reactions (k) in 298 K and effects of Electron-withdrawing and electron-donating groups on the interaction of the LUMO with the HOMO of the dipole and dipolarophile will be presented. The results show an increase in the HOMO-LUMO energy gaps (DE) & DG* also decreasing the DrG & k by increasing the ring size of cycloalkynes.}, keywords = {Substituted Nitrile oxide,HOMO-LUMO gap,DFT-B3LYP molecular orbital calculations,Cycloalkyne}, url = {https://ijcce.ac.ir/article_32093.html}, eprint = {https://ijcce.ac.ir/article_32093_658c7482414071d82e4c1b0d97a8f690.pdf} } @article { author = {Safavi Rad, Zahra and Pordel, Mehdi and Davoodnia, Abolghasem}, title = {Synthesis, Spectral Characterization and DFT Calculations of New Co(II) Complexes Derived from Benzimidazoles}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {111-120}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32274}, abstract = {The synthesis, characterization and quantum-chemical investigations of two new Co(II) complexesderived from fluorescent benzimidazoles have been reported. Two new fluorescentheterocyclic ligands were synthesized from the reduction of imidazo[4',5':3,4]benzo[1,2-c]isoxazole derivatives, and characterized by elemental analyses, IR, mass, and NMR spectra. Coordination of the bidentate ligands with Co(II) cation produced orange complexes. The structures of the complexes have been established by spectral and analytical data as well as Job’s method. The photophysical properties of the new ligands and Co(II) complexes were characterized by UV-Vis and fluorescence spectroscopies. An efficient charge transfer from the p-orbital of ligand to the Co(II) d-orbital could be proposed as the main reason for the color of the new complexes. To gain insight into geometry, spectral properties and the energy difference between the HOMO and LUMO frontier orbitals of the ligands and Co(II) complexes, the DFT calculations at the B3LYP/6-311++G(d,p) level were employed. The DFT-calculated spectral properties were in good agreement with the experimental values and confirmed the suitability of the optimized geometries for cobalt complexes.}, keywords = {Benzimidazole,Fluorescent ligands,Co(II) complex,UV-Vis and fluorescence spectroscopies,DFT}, url = {https://ijcce.ac.ir/article_32274.html}, eprint = {https://ijcce.ac.ir/article_32274_593be40da753ae011c49feb6d7cef853.pdf} } @article { author = {Shokri, Aref}, title = {The Elimination of Toluenediamine from Aqueous Solution by Reverse Osmosis}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {121-128}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32091}, abstract = {Toluene diamine (TDA) is a main carcinogenic aromatic pollutant in some industrial wastewater. In this study, the reverse osmosis with DSS-HR98PP as the membrane was employed for the removal of TDA in an aqueous environment. The Box–Behnken Design (BBD) of the experimentwas used to consider the effect of operational variables such as pressure, pH and the feed volumetric flow rate on the rejection efficiency of TDA. The ANOVA (Analysis of variance) exhibited a reasonable prediction second-order regression model and a high determination coefficient values (R2 = 99.57, R2adj = 98.81 and R2pred = 93.20). The optimum conditions predicted by the model were as follows: the volumetric flow rate of feed at 6 ´ 10-5 m3/m2s, pH at 6.8, and pressure at 45 ´ 10-5 N/m2. The predicted optimum response was 98.2%. The results showed that at the optimum conditions obtained for rejection, the permeate flux and actual rejection efficiency were 44.3 ´ 104 m3/m2s, and 96.9%, respectively.}, keywords = {Rejection efficiency,Toluene diamine,Reverse osmosis,Box–Behnken design,permeate flux}, url = {https://ijcce.ac.ir/article_32091.html}, eprint = {https://ijcce.ac.ir/article_32091_fc4b47b33b4a6bc3743b1e52ad453622.pdf} } @article { author = {Marahel, Farzaneh}, title = {Adsorption of Hazardous Methylene Green Dye from Aqueous Solution onto Tin Sulfide Nanoparticles Loaded Activated Carbon: Isotherm and Kinetics Study}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {129-142}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.31991}, abstract = {In this research, a novel adsorbent, tin sulfide nanoparticles coated on activated carbon [SnS-NP-C] was synthesized by a simple, low cost and efficient procedure for the removal of methylene green from aqueous solutions. Subsequently, this novel material characterization and identification has been completed by different techniques such as TEM, FT-IR, and UV-Vis spectrometry analysis. In the batch experimental set-up, optimum conditions for quantitative removal of Methylene green by [SnS-NP-C] was attained following searching effect of variables such as adsorbent dosage (0.05-0.35 g), contact time (10-120 min), solution pH (6-10), and initial concentration of dye (10–60 mg/L) on the adsorption process was investigated. Optimum values were set at pH of 8.0, 0.25 g of [SnS-NP-C] at removal time of 50 min. Kinetic studies at the various adsorbent dosage and initial methylene green concentration show that maximum dye was sequestered within 10 min as a sort time. The adsorption of methylene green follows the pseudo-second-order rate equation in addition to the interparticle diffusion model (with the removal of more than 99%) at all conditions. Equilibrium data fitted well with the Langmuir model at all amount of adsorbent, while maximum adsorption capacity was 14.22 mg/g for 0.2 g of [SnS-NP-C]. The present procedure is green and offers advantages such as shorter reaction time, simple workup, and high percentage removal. }, keywords = {Adsorption,Methylene green,Tin sulfide nanoparticles loaded activated carbon,Kinetics,Isotherm}, url = {https://ijcce.ac.ir/article_31991.html}, eprint = {https://ijcce.ac.ir/article_31991_63e9733cc6d63102054061108bf1bd6c.pdf} } @article { author = {Zare, Leila and Ghasemi-Fasaei, Reza}, title = {Investigation of Equilibrium Isotherm and Kinetic Modeling to Asses Sorption Characteristics of Nitrate onto Palm Leaf Biochar}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {143-153}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.31987}, abstract = {Application of agriculture residue especially in biochar form seems to be effective in the removal of contaminants such as nitrate pollution. The effectiveness of biochar produced from palm leaf residues (pyrolyzed at 600 ˚C) in the removal of nitrate from aqueous solution was studied at different pH. The pH value at the point of zero charges (pHpzc) and surface functional groups of biochar were also investigated. The result showed that the pHpzc of palm leaf biochar was about 8 and the most adsorption of nitrate from solution (90%) was obtained at pH 2. The fit of experimental data to six adsorption isotherm and eight kinetic models showed satisfied fits to Freundlich and Langmuir 2 isotherm and pseudo-second-order, power function, Intraparticle diffusion and simplified Milovich models due to their low values of Standard Errors (SE) of estimate and high values of coefficients of determination (R2). The result implied that the adsorption of nitrate onto palm leaf biochar was through favorable and multi-step chemisorption processes. According to the result reported herein the use of palm leaf biochar is promising for nitrate removal from aqueous solution.}, keywords = {biochar,equilibrium adsorption models,kinetic models,nitrate,palm leaf}, url = {https://ijcce.ac.ir/article_31987.html}, eprint = {https://ijcce.ac.ir/article_31987_f2a3422ec515273788f8ede115cac753.pdf} } @article { author = {Farrokhnia, Abdolhadi and Abdolahpour, Simin and Abbasi, Zahra}, title = {Removal of Pb (II) Ion and Safranin Dye from Aqueous Solution by Sheep Wool}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {155-163}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32277}, abstract = {The ability of sheep wool to remove Pb(II) ions and safranin dye from aqueous solutions through the adsorption process was investigated at room temperature. The metal ions concentration was determined by flame atomic absorption spectrophotometer method. The influence of pH, contact time, amount of adsorbent, temperature and initial metal ions concentration were examined by the batch method. The experimental data were analyzed using the Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherm equations. The correlation coefficients were determined by analyzing each isotherm. The results indicate that the experimental data show better correlation with the Freundlich isotherm for Pb(II) ion and Langmuir isotherm for safranin dye than other isotherms. Thermodynamic parameters such as Gibbs free energy enthalpy and entropy have also been evaluated and it has been found that the sorption process was feasible, spontaneous and exothermic. The maximum amounts of Pb(II) and safranin dye adsorbed (qm), that show in order of 12.787 mg/g for Pb(II) and 4.6533 mg/g for safranin of wool sheep. The morphological analysis of the wool sheep was performed by the Scanning Electron Microscopy (SEM).}, keywords = {Sheep Wool,Isotherms,Kinetics,Thermodynamics,Removal}, url = {https://ijcce.ac.ir/article_32277.html}, eprint = {https://ijcce.ac.ir/article_32277_fb2848f89e120812aa5389f48d8eb415.pdf} } @article { author = {P., Sakthisharmila and P N, Palanisamy and Palanichamy, Manikandan}, title = {Operational Cost Analysis for the Treatment of Various Textile Effluents by Electrochemical Process Using Stainless Steel and Aluminum Electrodes}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {165-173}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32095}, abstract = {The development of treatment processes from laboratory scale to industries involves a lot of troubles due to the automation of process parameters and fluctuated characteristics of wastewater. In the present study, six different real-time textile effluents of samples such as S1 to S6 are characterized and treated by electrocoagulation process using Stainless Steel (SS) and Aluminum (Al) electrodes. The maximum removal efficiencies of color as 94%, turbidity as 99%, Chemical Oxygen Demand (COD) as 84% and Biological Oxygen Demand (BOD) as 82% is obtained for effluent sample S1 with fixed operational conditions such as the applied voltage of 4V, inter-electrode distance of 3 cm, the surface area of the electrode of 25 cm2 and agitation speed of 500 rpm respectively. After the electrocoagulation process, the BOD5/COD ratio of all effluent samples is observed as biodegradable limits. Under the fixed conditions, the operational cost for the treatment of effluent sample S1 analyzed as 2.42 and 1.01 $/m3 by using SS and Al electrodes respectively.}, keywords = {COD,cost,electrocoagulation,electrodes,Textile effluents}, url = {https://ijcce.ac.ir/article_32095.html}, eprint = {https://ijcce.ac.ir/article_32095_3351dc612d0393f826b8f7dfbbcd00a2.pdf} } @article { author = {Baddouh, Ali and Rguiti, Mohamed M. and El Ibrahimi, Brahim and Hussain, Sajjad and Errami, Mohamed and Tkach, Volodymyr and Bazzi, Lahcen and Hilali, Mustapha}, title = {Anodic Oxidation of Methylene Blue Dye from Aqueous Solution Using SnO2 Electrode}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {175-184}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.34227}, abstract = {This study was performed to investigate the electrochemical oxidation of a solution containing methylene blue dye by using a tin oxide (SnO2) electrode. The effect of several operating factors such as electrolyte types, current density, initial dye concentration, and pH were investigated by following the discolorationand COD removal. The results show that the maximum color was removed by using chloride supporting electrolyte (i.e. KCl and NaCl) indicating that the indirect oxidation was promoted by the strong oxidant species (i.e. Cl2 and ClO–) generated at the anode surface. The best experimental conditions were attained for i = 60mA/cm2, 1% KCl and pH = 3, in which 100% of color was removed after 30 minutes and the COD removal reached 80.9% after 120 min. These results reveal that the anodic oxidation technique using SnO2 electrode could be used to remove the methylene blue dye from textile wastewater.}, keywords = {Oxidation,Dyes,Discoloration,Methelyne bleu,SnO2 electrode}, url = {https://ijcce.ac.ir/article_34227.html}, eprint = {https://ijcce.ac.ir/article_34227_c732257f410bcf40c8700d63666c3946.pdf} } @article { author = {Benhachem, Fatima Zahra and Harrache, Djamila}, title = {Experimental Approach for the Study of the Contamination and the Accumulation of Heavy Metals in the Cork Oak and the Stone Pine}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {185-195}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.34230}, abstract = {This study aims to evaluate the pollution by Heavy Metals (HMs) of the stone pine (Pinus pinea L.) and cork oak (Quercus suber L.) in dry- and wet- season, motivated by the road traffic, at the level of the forest of Hafir located in Tlemcen (Algeria). The distribution and the migration of 9 HMs in the green leave and needles and the litter (viz.dead leaves) were studied, viz.  Cd, Ni, Co, Cr, Pb, Cu, Zn, Fe, and Ag, in addition to five major elements, i.e. Ca, Mg, K, Na, Mn. The HM -contents are measured by Flame Atomic Absorption Spectroscopy (FAAS) after their dissolution according to several methods.  The mineralization of HMs by the strong acids seems to be a good technique by comparing with other techniques, it reported the higher concentrations of metals which is more important for the dosage of the cadmium. This study allowed to understand that the quantities of HMs transported in the atmospheric releases, once deposited on the aerial parts of the leaves and the litter, their future depends on the accumulative character of the plant, as well as for each metal, there is an adequate chemical extraction with a representative variation.}, keywords = {pollution,heavy metals,Hafir,the mineralization,chemical extraction}, url = {https://ijcce.ac.ir/article_34230.html}, eprint = {https://ijcce.ac.ir/article_34230_f57ed2ac4f6c64d72559de8baecaca17.pdf} } @article { author = {Mohamadpour, Mohamad and Pirdashti, Mohsen and Shahrokhi, Behnia and Rostami, Abbas Ali}, title = {Response Surface Methodology for the Evaluation of Lysozyme Partitioning in Poly (Vinyl Pyrrolidone) and Potassium Phosphate Aqueous Two-Phase System}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {197-208}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32276}, abstract = {The partitioning of lysozyme and extraction yield in an aqueous two-phase system containing Poly Vinyl Pyrrolidone (PVP) K25 and potassium phosphate were investigated as a function of weight percent of salt and PVP in the feed, temperature, and pH. To investigate partitioning behavior, the central composite design was considered using a quadratic model. According to the results of the model, the partitioning of lysozyme was mainly due to the impact of the weight percent of the salt in the feed. However, the partitioning was expanded a little following the increase in the weight percent of the polymer. Based on the results, there was an opposite relationship between the temperature and decrement in the viscosity of PVP as the increment in the former led to the decrement in the latter. Finally, the modification in the third factor was done by increasing the pH level. Before experimenting, some values were hypothesized such as 93.69% for the maximum extraction yield, 21.23% for PVP K25, 13.99% for the salt concentrations, 7.10 for the pH value and 35.57 for the temperature. The findings of the study suggest that the hypothesized values for different variables are in line with the experimental results.}, keywords = {Aqueous two-phase system,Lysozyme,Polyvinylpyrrolidone,potassium phosphate,RSM}, url = {https://ijcce.ac.ir/article_32276.html}, eprint = {https://ijcce.ac.ir/article_32276_06dde066188c44da05bdedede108530a.pdf} } @article { author = {Karimdoost Yasuri, Amir and Izadi, Mohsen and Hatami, Hossein}, title = {Numerical Study of Natural Convection in a Square Enclosure Filled by Nanofluid with a Baffle in the Presence of Magnetic Field}, journal = {Iranian Journal of Chemistry and Chemical Engineering}, volume = {38}, number = {5}, pages = {209-220}, year = {2019}, publisher = {Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR}, issn = {1021-9986}, eissn = {}, doi = {10.30492/ijcce.2019.32165}, abstract = {Natural convection heat transfer in a square enclosure with a horizontal baffle at the centerline of the left wall containing Al2O3-water in the presence of a magnetic field is investigated numerically. The top and bottom horizontal walls are adiabatic. The left wall and the baffle are maintained in constant temperature Th and the right wall is maintained in constant temperature Tc (Tc