Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Synthesis and Characterization of Graphene Oxide Nano-Sheets for Effective Removal of Copper Phthalocyanine from Aqueous Media192870210.30492/ijcce.2017.28702ENAlireza TajikiChemistry Departments, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, IranMajid AbdoussChemistry Departments, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, IranJournal Article20151130Graphene Oxide (GO) nano sheets was synthesized from graphite by Hummers method. The nature and morphology of the GO were characterized using FT-IR, UV-Vis, SEM and XRD analysis. Batch sorption experiments were carried out to remove copper (ii) phthalocyanine-tetrasulfonic acid tetrasodium salt [Cu(tsPc<sup>)-4</sup>.4Na<sup>+</sup>] from its aqueous solutions using GO as an adsorbent. Experiments were carried out to investigate the influence of contact time, initial dye concentration, ionic strength, and temperature on the adsorption performance. The Langmuir and Freundlich isotherm models have been<em> applied and the Freundlich model was found to be fit with the equilibrium isotherm data. The kinetic data were analyzed using pseudo first-order and pseudo-second-order models. The adsorption kinetics matched well with the pseudo-second-order kinetic model. The thermodynamic analysis showed that the adsorption process is spontaneous and endothermic. The experiments showed that GO is very good adsorbent with high adsorption capacity for [Cu(tsPc)<sup>-4</sup>.4Na<sup>+</sup>] dye and the main reason for this good affinity of dye onto GO can be π-π stacking interactions between the polycyclic aromatic structure of (CuTSPc) and unsaturated bonds on the surface of graphene oxide.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Preparation of U3O8 by Calcination from Ammonium Uranyl Carbonate Using Response Surface Methodology: Process Optimization11192870310.30492/ijcce.2017.28703ENLiu BingguoFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, CHAINA+/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology, Kunming, 650093, CHAINAPeng JinhuiFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, CHAINA+/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology, Kunming, 650093, CHAINAZhang IiboFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, CHAINA+/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology, Kunming, 650093, CHAINAC. Srinivasa KannanChemical Engineering Department, the Petroleum Institute, Abudhabi, UAEHu Jin MingFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, CHAINAGuo ShenghuiFaculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, CHAINA+/State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology, Kunming, 650093, CHAINAJournal Article20150626The parameters to<em> prepare U<sub>3</sub>O<sub>8</sub> by calcination from ammonium uranyl carbonate were optimized by using response surface methodology. A quadratic equation model for the value of total uranium and U<sup>4+ </sup>of triuranium octaoxide was built and the effects of main factors and their corresponding relationships were obtained. The statistical analysis of the results indicated that the value of total uranium and U<sup>4+ </sup> of triuranium octaoxide was significantly affected by the calcination temperature and calcination time in this study range. The optimized calcination conditions were determined as follows: the calcination temperature</em><em>961.6</em><em> K, the calcination time </em><em>27.9 </em><em>min, and the mass of material </em><em>37.86 </em><em>g, respectively. Under these conditions, the value of total uranium and U<sup>4+ </sup> of </em><em>triuranium octaoxide was </em><em>84.29% and 28.14%</em><em>. The validity of the model was confirmed experimentally and the results were satisfactory.</em> Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801H3PW12O40: An Efficient and Green Catalyst for the Facile and Selective Oxidation of Sulfides to Sulfoxides, Applied to the Last Step of the Synthesis of Omeprazole21292870510.30492/ijcce.2017.28705ENMaryam EsfandyariDepartment of Chemistry, Alzahra University, Tehran, I.R. IRANMajid HeraviDepartment of Chemistry, School of Science, Alzahra University, Tehran, I.R. IRANHossein Oskooie,Department of Chemistry, Alzahra University, Tehran, I.R. IRANLida FotouhiDepartment of Chemistry, Alzahra University, Tehran, I.R. IRANMahmood TajbakhshDepartment of Chemistry, University of Mazandaran, Babolsar, I.R. IRANFatemeh BamoharramDepartment of Chemistry, Mashhad Branch, Islamic Azad University, Mashhad, I.R. IRANJournal Article20160605<em>Omeprazole, (6-methoxy-2-((4-methoxy-3,5-dimethylpyridin-2-yl)methylsulfinyl)-1H-benzimidazole is a well-established prescribed drug,</em> <em>exhibits proton pump inhibitor activity. In this work, a novel, facile, economical and selective oxidation approach</em> <em>using H<sub>3</sub>PW<sub>12</sub>O<sub>40</sub> as Keggin type heteropolyacids along with H<sub>2</sub>O<sub>2</sub> in the last step of the conventional synthesis of this compound as well as its derivatives under environmental-benign conditions, is reported. This protocol can be</em><em>well adopted for pilot plant scale giving a high pure pharmacopeia grade material.</em> <em>Our synthetic route</em><em> involves the use of various heteropolyacids as heterogeneous catalysts.</em> <em>Due to the obtained results, it was concluded that Keggin type heteropolyacid , is</em> <em>an effective catalyst for this purpose. </em><em>The optimized condition for the last step of this synthesis was applied to the synthesis of lansoprazole,</em><em> pantoprazole, and rabeprazole.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Fe2O3 as an Environmentally Benign Natural Catalyst for One-Pot and Solvent-Free Synthesis of Spiro-4H-Pyran Derivatives31382870610.30492/ijcce.2017.28706ENMalek Taher MaghsoodlouDepartment of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P. O. Box 98135-674 Zahedan, I.R. IRANReza HeydariDepartment of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P. O. Box 98135-674 Zahedan, I.R. IRANFarzaneh MohamadpourDepartment of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P. O. Box 98135-674 Zahedan, I.R. IRANMojtaba LashkariFaculty of Science, Velayat University, Iranshahr, I.R. IRANJournal Article20171129<em>In this work, a simple and economical procedure for the synthesis of </em><em>spiro-4H-pyran</em><em>derivatives has been found through the three-component, one-pot condensation of isatin/acenaphthequinone, malononitrile and different reagents including 1, 3-dicrbonyl compounds, naphthol and 4-hydroxycumarin under thermal and solvent-free conditions in the presence of</em>Fe<sub>2</sub>O<sub>3</sub> as an efficient catalyst<em>. The major advantages of this methodology are mild reaction conditions, eco-friendly, environmentally benign, non-toxic and inexpensive catalyst, experimentally simplicity, good yields and short reaction times.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Synthesis of Cis-Diammine (1,1-cyclobutane dicarboxylate) Platinum(II)39432870710.30492/ijcce.2017.28707ENAli Nemati KharatSchool of Chemistry, University College of Science, University of Tehran, Tehran, I.R. IRANBahareh Tamaddoni JahromiSchool of Chemistry, University College of Science, University of Tehran, Tehran, I.R. IRANEhsan MohammadifarSchool of Chemistry, University College of Science, University of Tehran, Tehran, I.R. IRANJaleh ZareyiSchool of Chemistry, University College of Science, University of Tehran, Tehran, I.R. IRANJournal Article20160626<em>Platinum-based anticancer drugs are chemotherapeutic agents to treat cancer. Carboplatin (cis diammine cyclobutane dicarboxylate platinum (II)) is a second generation drug that has less toxic than cisplatin, allowing for high dosages. In the first stage, 1,3-Cyclobutane dicarboxylic acid, a key intermediate for the preparation of carboplatin, have been synthesized in good yields using different methodology to achieve high purity then carboplatin was synthesized from the reaction of the prepared ligand with cisplatin. Purity of prepared carboplatin was confirmed by High-Performance Liquid Chromatography (HPLC). Platinum(II) complex carboplatin,</em><em>have been characterized with <sup>1</sup>H and <sup>13</sup>C nuclear magnetic resonance spectra and infrared spectroscopy.</em><br /> <br /> Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801The Photocatalytic, Thermal Degradation Kinetics and Lifetime Prediction of Some Commercial Reactive Dyes45572870810.30492/ijcce.2017.28708ENHussein M.Al-MaydamaChemistry Department, Faculty of Sciences, Sana'a University, Sana'a, YEMANMohamed S. Al KahaliChemistry Department, Faculty of Sciences, Sana'a University, Sana'a, YEMANAdlia A. AbduljabbarChemistry Department, Faculty of Sciences, Sana'a University, Sana'a, YEMANAbdulbasset M. AaadChemistry Department, Faculty of Sciences, Sana'a University, Sana'a, YEMANJournal Article20160404<em>The photocatalytic degradation of the commercial reactive Black5 (RB5), Blue19 (RB19), Green19 (RG19), Red120 (RR120), and Yellow81 (RY81) in aqueous solution and sunlight were examined in the presence of Fe<sub>2</sub>O<sub>3</sub> and the mixture Fe<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> as catalysts. The results showed that the photocatalytic degradation followed first-order kinetics with faster degradation in case of the mixture Fe<sub>2</sub>O<sub>3</sub>/H<sub>2</sub>O<sub>2 </sub>than that in Fe<sub>2</sub>O<sub>3</sub> catalyst. The photocatalytic degradation percentages with the exposure time intervals obtained for each dye were extrapolated to determine the time at the complete degradation (100% degradation). The thermal decomposition behavior of these dyes was investigated by using non-isothermal thermogravimetric analysis (TG, DTG, and DTA), at 10 °C/min heating rate and under nitrogen. The Coats-Redfern integral method was used for the five reactive dyes in order to evaluate the kinetic parameters for each step in the sequential decomposition TGA curves. The initial molecular structure destruction of these five reactive dyes occurred at their second steps. The kinetic parameters of this structural destruction step at multiple heating rates (10, 15, 20 and 30 <sup>°</sup>C/min) were only worked out for three selected dyes (RB5, RB19, and RR120) using the Flynn-Wall-Ozawa equation and compared with that of Kissinger's equation. Based on the data obtained by the Coats-Redfern method, the thermodynamic parameters (∆G<sup>*</sup>, ∆H<sup>*</sup> and ∆S<sup>*</sup>) for these second steps were determined. Finally, the kinetic data extracted from the TGA curves were also used as appropriate to predicate the lifetime of the five dyes at 25, 50, 100 and 200 °C.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Effects of Nanoclay on Cellular Morphology and Water Absorption Capacity of Poly(vinyl alcohol) Foam59672870910.30492/ijcce.2017.28709ENReza JahanmardiDepartment of Polymer Engineering, Science and Research Branch, Islamic Azad University, Tehran, I.R. IRANBehnam EslamiDepartment of Polymer Engineering, Science and Research Branch, Islamic Azad University, Tehran, I.R. IRANHamed TamaddonDepartment of Polymer Engineering, Science and Research Branch, Islamic Azad University, Tehran, I.R. IRANJournal Article20160610<em>The present work was aimed to examine the effects of incorporation of each of two different types of nanoclay, i.e. Cloisite Na+ and Cloisite 30B, into PVA foam on cellular morphology and water absorption capacity. Foam samples containing 0.0-10.0 wt% of each of the two types of nanoclay alone were prepared using mechanical foaming. Accordingly, PVA/organoclay/water suspensions were prepared first. Then other agents, i.e. catalyst, surfactant and crosslinking agent were added, respectively, to each of the prepared suspensions rendering primary froths, which were converted to final foam samples at room temperature during a period of 24 h. State of clay dispersion in the polymer matrix and cellular morphology of the prepared foam samples were examined using X-Ray Diffraction (XRD) technique and Field Emission Scanning Electron Microscopy (FESEM), respectively. Also, dry foam density and water absorption of the foam samples were measured gravimetrically. XRD patterns revealed the existence of intercalated and exfoliated structures in the PVA/Cloisite 30B and the PVA/Cloisite Na+ foam samples, respectively. FESEM images demonstrated open-cell morphology for all the samples but the extent of cell wall rupture was more significant in the case of PVA/nanoclay foam samples. In addition, water absorption capacity of the PVA foam was shown to be decreased by the incorporation of either of the two types of nanoclay, which was explained in terms of the lower total pore volume in the PVA/nanoclay foam samples than in the neat PVA foam sample. Finally, the obtained results were explained in terms of the effects of the nanoparticles on the elevation of the rate of the drainage in the crosslinking PVA solution before the stabilization of the cellular structure.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Adsorption and Desorption of Sulfur Compounds by Improved Nano Adsorbent: Optimization Using Response Surface Methodology69792871010.30492/ijcce.2017.28710ENGhasem BakhtiariChemistry Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, I.R. IRANMansour BazmiRefining Technology Development Division, Research Institute of Petroleum Industry, Tehran, I.R. IRANMajid AbdoussChemistry Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, I.R. IRANSayed Javid RoyaeeRefining Technology Development Division, Research Institute of Petroleum Industry, Tehran, I.R. IRANJournal Article20160202<em>Today, sulfur removal from fuels has improved by new adsorbents such as zeolites that needs extensive studies. This study investigates the feasibility of sulfur compounds adsorption on improved nano zeolite existing in organic fuels and desorption of them from nano-adsorbent.</em><em>Some properties of improved nano zeolite were analyzed to receive better sulfur compounds adsorption.</em><em> Zeolite surface structure was analyzed by TEM (tunneling electron microscopy). Batch experiments were chosen for adsorption/desorption study of sulfur compounds and adsorption and desorption conditions were optimized by BBD methodology. The influence of variables in the process, consists of adsorbent metal percent (0.05-10 </em> wt%<em>), adsorbent calcination temperature (200-500 </em><em>°C</em><em>) and </em><em>adsorption process temperature (30-120 </em><em>°C</em><em>) in adsorption stage and gas flow rate (1.5-3.5 mL/Min),</em><em> regeneration temperature (150-300 </em><em>°C</em><em>) and desorption time (30-90 Min) which were investigated using experimental design procedure.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Modelling of Adsorption of Zinc and Silver Ions on Analcime and Modified Analcime Zeolites Using Central Composite Design81902871310.30492/ijcce.2017.28713ENMaryam YousefpourDepartment of Petroleum Engineering, Nour Branch, Islamic Azad University, Nour, I.R. IRANJournal Article20160723<em>In this study, Response Surface Methodology (RSM) using Central Composite Design (CCD) </em><em>was employed to optimize the conditions of independent variables (adsorption time and </em><em>ion solution concentration) for the removal of Zinc (II) and Ag ions from the aqueous solutions using</em><em> analcime and modified analcime zeolites (Fe-ANA and Ni-ANA) as efficient and low cost adsorbent. The operation conditions were contact time of 1-13 h and ion concentration of 25-250 ppm at ambient temperature. Under these conditions, the response (the adsorption capacity of zinc (II) and Ag ions) was fitted by a quadratic polynomial regression model and linear model analysis in five-level-two-factor CCD using Design Expert software. The optimal conditions (high removal efficiency) for zinc (II) and Ag+ adsorption were achieved. The analysis of variance demonstrated that ion concentration effect was found to be significant in the adsorption process. Moreover, actual and predicted response plot of ion adsorption in zeolites were investigated.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Removal of Arsenic from Water Using Aluminum Nanoparticles Synthesized through Arc Discharge Method91992871410.30492/ijcce.2017.28714ENSamira PoorsadeghiDepartment of Chemistry, Tarbiat Modares University, P.O. Box 14155-4383 Tehran, I.R. IRANMohamadzaman KassaeeDepartment of Chemistry, Tarbiat Modares University, P.O. Box 14155-4383 Tehran, I.R. IRANHanieh FakhriDepartment of Chemistry, Tarbiat Modares University, P.O. Box 14155-4383 Tehran, I.R. IRANMaryam MirabediniDepartment of Chemistry, Tarbiat Modares University, P.O. Box 14155-4383 Tehran, I.R. IRANJournal Article20151113<em>The present study describes a novel procedure for As (V) removal from water using pure Al nanoparticles (AlNps) prepared by arc discharge technique. Some spectroscopic and microscopic techniques such as X-Ray Diffraction (XRD),</em><em> Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Brunauer–Emmett–Teller (BET) and Barrett–Joyner–Halenda (BJH) corroborated the structure of the prepared nanoparticles. From TEM image, the average size of nanoparticles was nearly calculated 15 nm. To confirm the removal of arsenic, Inductive Coupled Plasma Optical Emission Spectroscopy (ICP-OES) was used. The effects of some parameters such as contact time, adsorbent dose, As (V) initial concentration, pH, and ionic strength were investigated. In optimum conditions, for a solution with the initial concentration of 30 mg/L of arsenic (V), the maximum removal (92%) took place after 3h at pH of 3. The adsorption followed the pseudo-first-order kinetic model.</em><em>The equilibrium data fitted well to Langmuir adsorption isotherm which suggested monolayer adsorption. Adsorption capacity was calculated 55.5 mg/g through Langmuir isotherm which confirmed AlNps present an outstanding ability </em><em>to remove As (V) not only due to a high surface area and small particle size but also because of their</em><em> great inherent action.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Rare Earth Nitrate Complexes with an ONO Schiff Base Ligand: Spectral, Thermal, Luminescence and Biological Studies1011092871510.30492/ijcce.2017.28715ENSriramula Vidya Sagar BabuDepartment of Chemistry, Sri Krishnadevaraya University, Aanantapuramu-515 003, INDIAKatreddi HussainReddyDepartment of Chemistry, Sri Krishnadevaraya University, Aanantapuramu-515 003, INDIAJournal Article20160404<em>Five rare earth complexeslanthanum(III),praseodymium(III),neodymium(III), samarium(III) and europium(III) have been synthesized from Schiff base ligand (N,N-bis (2-hydroxy-1-naphthylidene) acetylhydrazone). The complexes were characterized based on elemental analysis, molar conductance, ultraviolet, infrared, mass, thermogravimetric and powder X-ray diffraction studies. Infrared spectra suggest ligand act as a neutral tridentate ligand. The Schiff base ligand coordinating through the naphtholic oxygen without proton displacement, azomethine nitrogen atom and hydrazone carbonyl oxygen atoms of the ligand to the lanthanide ion. The conductivity and thermal decomposition studies indicate the presence of two coordinated nitrate ion acts as bidentate fashion. Powder X-ray diffraction studies reveal the neodymium complex has an orthorhombic system with different unit cell parameters. Europium, samarium, neodymium and praseodymium complexes exhibit the characteristic luminescence. Further, the in vitro antimicrobial activities of the metal complexes exhibited greater activity as compared with the ligand.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Synthesis and Metal Ion Uptake Studies of Silica Gel-Immobilized Schiff Base Derivatives and Catalytic Behaviors of their Cu(II) Complexes1111222871610.30492/ijcce.2017.28716ENMahir TimurAltınözü Vocational School, Mustafa Kemal University, Hatay, TURKEYCahit DemetgülDepartment of Chemistry, Faculty of Arts and Sciences, Mustafa Kemal University, Hatay, TurkeyJournal Article20160404New silica supported Schiff base ligands were prepared by the condensation reaction of 4,6-diacetylresorcinol with silica-gel derivatives, which modified with 3-aminopropyltriethoxysilane and N-(2-aminoethyl) -3-aminopropyltrimethoxysilane. Metal ion uptake capacities of these compounds were studied towards of selected transition metal (Cd(II), Cu(II), Co(II), Mn(II), Pb(II) and Ni(II)) cations in an aqueous medium. In addition, Cu(II) complexes of these ligands were prepared by using heterogeneous reaction conditions. The synthesized compounds were characterized by using elemental analysis, FT-IR, DR-UV-vis., CP/MAS <sup>13</sup>C-NMR, AAS, XRD and TGA techniques. Moreover, the morphological and chemical properties of these compounds were investigated by using a scanning electron microscope (SEM) coupled to an<em> energy-dispersive X-ray spectrometer (EDX).</em><em> The catalytic performances of the Cu(II) complexes </em><em>were investigated on H<sub>2</sub>O<sub>2</sub> decomposition. These complexes displayed good catalytic activities towards the decomposition of H<sub>2</sub>O<sub>2</sub> as heterogeneous catalysts.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Preferential Solvation of Fenofibrate in (Ethanol or Acetone) + Water Mixtures at 298.15 K1231282871710.30492/ijcce.2017.28717ENAbolghasem JouybanPharmaceutical Analysis Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 51664, I.R. IRAN+/Kimia Idea Pardaz Azarbayjan (KIPA) Science Based Company, Tabriz University of Medical Science, , Tabriz, I.R. IRANFleming MartinezGrupo de Investigaciones Farmacéutico-Fisicoquímicas, Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia –Sede Bogotá, Cra. 30 No. 45-03, Bogotá D.C., COLOMBIAWilliam E. Acree Jr.Department of Chemistry, University of North Texas, Denton, TX 76203-5070, USAJournal Article20160822<em>The aim of this communication was to expand the results of numerical analyses performed by Sun et al. on their experimental solubility of fenofibrate in aqueous mixtures of ethanol and acetone at 298.15 K, in terms of the evaluation of the preferential solvation of this compound by the organic solvents and water in the saturated mixtures based on the inverse Kirkwood-Buff integrals (IKBI). According to the results, this drug is preferentially solvated by water in water-rich mixtures but preferentially solvated by the cosolvents in mixtures with intermediate composition and also in cosolvent-rich mixtures. Preferential solvation by water </em><em>in water-rich mixtures may be due to hydrophobic hydration around non-polar moieties of this drug.</em><em> Moreover, it is conjecturable that in regions with preferential solvation by the cosolvents the drug is acting as Lewis acid with the cosolvent molecules because they are more basic than water.</em><br /> Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Solubility of Cis, Cis-Muconic Acid in Various Polar Solvents from 298.15 K to 348.15 K1291362871810.30492/ijcce.2017.28718ENSimone ScelfoDepartment of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi,
24, 10129 Torino, ITALYRaffaele PironeDepartment of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, ITALYNunzio RussoDepartment of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, ITALYJournal Article20160110<em>The present work concerns with an investigation on the solubility of cis,cis-muconic acid dissolution in different polar solvents by characterizing and modeling the dissolution as a function of temperature. Water, ethanol, 2-propanol and acetic acid have been investigated as solvents in the range temperatures from a 298.15 to 348.15 K. Owing to the absence of cis,cis-muconic acid solubility data, the molar fraction and temperature were correlated using the modified Apelblat equation model, which is applied for the mathematic fitting of experimental data.A total relative average deviation of 3.54% was obtained for the experimental results and the solubility data obtained with the model, thus attesting the adequacy for this study. The use of modified Apelblat equation also allowed to determine the molar enthalpy and molar entropy of dissolution. The dissolution of cis,cis-muconic acid in water, ethanol, 2-propanol and acetic acid, over temperatures ranging from 298.15 to 348.15 K, has been shown to be exothermic.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Antimicrobial Activities of Some Natural Dyes and Dyed Wool Yarn1371442871910.30492/ijcce.2017.28719ENNazan ComlekciogluKahramanmaras Sutcu Imam University, Science and Letters Faculty, Biology Department, Kahramanmaras, TURKEYAshabil AyganKahramanmaras Sutcu Imam University, Science and Letters Faculty, Biology Department, Kahramanmaras, TURKEYMehtap KutluKahramanmaras Sutcu Imam University, Science and Letters Faculty, Biology Department, Kahramanmaras, TURKEYYusuf Z. KocabasKahramanmaras Sutcu Imam University, Turkoglu Vocational High School, Medicinal Plants Department, Kahramanmaras, TURKEYJournal Article20160211<em>Natural dyes gained increasing attention due to environmental considerations. Many of the dye plants have also medicinal values. This study aimed to evaluate the effect of 25 plants as dyes and their dyed wool yarns against microorganisms. Prokaryotes were found to be more sensitive to dye extracts than eukaryotic microorganisms and dyestuff from Punica granatum, Berberis vulgaris, Agrimonia eupatoria, Rhus coriaria were effective against all bacteria. Sarcina lutea, Bacillus subtilis, MRSA and Enterococcus faecalis were sensitive to almost all dye extracts even at low concentrations. The dyed wool material tested with microorganisms, and maximum inhibition rates were obtained against S. lutea and MRSA of wool samples dyed with P. granatum and R. coriaria, respectively, while there was a drastic decrease in E. faecalis growth with the A. cepa and R. petiolaris.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Experimental Measurement of Methane and Ethane Mole Fractions during Gas Hydrate Formation1451532872010.30492/ijcce.2017.28720ENReza RazizadehAhwaz Petroleum Faculty, Petroleum University of Technology (PUT), P.O. Box 6314661118 Ahwaz, I.R. IRANVahid MohebbiAhwaz Petroleum Faculty, Petroleum University of Technology (PUT), P.O. Box 6314661118 Ahwaz, I.R. IRANMasoud AghajaniAhwaz Petroleum Faculty, Petroleum University of Technology (PUT), P.O. Box 6314661118 Ahwaz, I.R. IRANJournal Article20160710<em>The super-saturation condition has to be provided to form gas hydrates. Consequently, the prediction of the guest molecule fraction in the aqueous phase is crucial in the study of the gas hydrate kinetics. In the present work, several experiments were carried out in a semi-batch reactor in order to determine the mole fraction of methane and ethane during gas hydrates formation (growth stage). The temperature ranged from 274.15 to 284.15 K. The experiment pressure ranges were 3100 to 7765 kPa and 950 to 2635 kPa for methane and ethane, respectively. The mole fraction is proportional to pressure while it is not affected by temperature to a great extent. Furthermore, the amount of guest dissolved in the liquid water was observed in the aqueous phase which was fairly constant during hydrates formation.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801MHD Flow and Heat Transfer Analysis of Micropolar Fluid through a Porous Medium between Two Stretchable Disks Using Quasi-Linearization Method1551692872110.30492/ijcce.2017.28721ENShaheen AkhterCentre for Advanced Studies in Pure and Applied Mathematics (CASPAM),
Bahauddin Zakariya University Multan, PAKISTANMuhammad AshrafCentre for Advanced Studies in Pure and Applied Mathematics (CASPAM),
Bahauddin Zakariya University Multan, PAKISTANKashif AliDepartment of Basic Sciences and Humanities, Muhammad Nawaz Shareef University of Engineering and Technology, Multan, PakistanJournal Article20160415<em>In this paper, a comprehensive numerical study is presented for studying the MHD flow and heat transfer characteristics of non-Newtonian micropolar fluid through a porous medium between two stretchable porous disks. The system of governing equations is converted into coupled nonlinear ordinary ones through a similarity transformation, which is then solved using </em><em>Quasi-linearization method. The effects of the magnetic field, the vortex viscosity, the microinertia density,</em><em> the spin gradient viscosity, the stretching of the disks, the viscous dissipation, the ratio of momentum diffusivity to thermal viscosity, the radiation and the porosity of the medium on the flow, microrotation and temperature fields are discussed through tables and graphs.</em><br /> Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Wettability Alteration of Oil- Wet and Water-Wet of Iranian Heavy Oil Reservoir by CuO Nanoparticles1711822872210.30492/ijcce.2017.28722ENMasoumeh TajmiriDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, I.R. IRANMohammad Reza EhsaniDepartment of Chemical Engineering, Isfahan University of Technology, Isfahan 84156-83111, I.R. IRANJournal Article20161107<em>The petroleum industry requires the best materials to reverse the rock wettability to water-wet state which give significantly improved oil recovery.</em><em>Nanoparticles are suggested as enhanced oil recovery potential agents to decrease viscosity and alter the wettability of reservoir towards more water-wet. This study provides new insights into CuO nanoparticles effects </em><em>on wettability alteration of different core types (sandstone and carbonate) and increases oil recovery.</em><em> The first objective of this research is to determine the potential of CuO nanoparticles to imbibe through spontaneous imbibition cell and raise the oil recovery experimentally. The second goal is </em><em>to prove that CuO nanoparticles have the ability to alter wettability of sandstone and carbonate cores</em><em> quantitatively. Laboratory tests were conducted in two experiments on four cylindrical core samples taken from Iranian heavy oil reservoir. In the first experiment, core samples were saturated by crude oil and in the second test, nanoparticles were flooded and then saturated by crude oil, immersed in distilled water and the amount of recovery was monitored during 30 days. Experimental results show that oil recoveries for sandstone cores change from 20.74, 4.3 and 3.5% of OOIP without nanoparticles to 31.77, 17.3 and 14.42% of OOIP with CuO nanoparticles, respectively. The oil recoveries for carbonate core vary from zero without nanoparticles to 6.92% of OOIP with nanoparticles, respectively. By investigation of relative permeability curve, the crossover-point is shifted to the right by adding CuO nanoparticles which means nanoparticles succeed in altering the wettability to more water- wet for sandstone and even carbonate cores.</em>Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998636420170801Bioleaching of Molybdenum by Two New Thermophilic Strains Isolated and Characterized1831942872310.30492/ijcce.2017.28723ENMahshid RoshaniBiotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, I.R. IRANSeyed Abbas ShojaosadatiBiotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, IranSeyed Jaber SafdariNuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, Tehran, I.R. IRANEbrahim Vasheghani-FarahaniBiotechnology Group, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, I.R. IRANKazem MirjaliliNuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, Tehran, I.R. IRANZahra ManafiDepartment of Microbiology, Islamic Azad University, Jahrom Branch, Jahrom, I.R. IRANJournal Article20161107This study involves the isolation and characterization of a bacterial strain capable of bioleaching molybdenum ore. Bacterial growth was observed when rock sample was incubated in 9K at 70 ºC. The isolates were identified as extremely acidophilic, thermophilic and chemolithotroph archaebacteria. Following PCR amplification of the 16S rDNA of the isolated strain, the sequencing of this region and comparison with the Gen-Bank database identified the<em> strains as Acidianus ambivalens and Sulfolobus solfataricus. An experimental design was carried </em><em>out to optimize bioleaching of molybdenum by these bacteria. Factors of pulp density, initial pH, the concentration of Fe<sup>3+</sup> and the ratio of two bacteria are the variables and molybdenum and uranium recoveries were selected as responses. Bioleaching was carried out using molybdenum ore and pulp density of 4%, initial pH of 1.5, Fe<sup>3+</sup> concentration of 11.5 g/L and Sulfolobus solfataricus </em><em> to Acidianus ambivalens ratio of 2.0 were selected as optimum conditions. Molybdenum and uranium</em><em> recoveries were 43.2% and 79.1% respectively.</em>