eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
1
9
10.30492/ijcce.2016.23549
23549
Synthesis and Characterization of a Novel Nanoporous Composite Based on Elemental Sulfur and Graphitic Mesoporous Carbon
Narmin Bahrami Adeh
b_adeh@gmail.com
1
Nourali Mohammadi
2
Fatemeh Khorramjah
fatemeh.khorramjah@gmail.com
3
Iranian Institute for Research & Development in Chemical Industries(IRDCI), Academic Center for Education, Culture and Research (ACECR), Karaj, I.R. IRAN
Iranian Institute for Research & Development in Chemical Industries(IRDCI), Academic Center for Education, Culture and Research (ACECR), Karaj, I.R. IRAN
Iranian Institute for Research & Development in Chemical Industries(IRDCI), Academic Center for Education, Culture and Research (ACECR), Karaj, I.R. IRAN
A novel sulfur nanocomposite was fabricated based on graphitic mesoporous carbon.The graphitic mesoporous carbon was synthesized using sucrose as carbon precursor, nano CaCO3 as a hard template and nickel nitrate as graphitization catalyst. The structural properties of the prepared material were characterized using powder X-Ray Diffraction (XRD), N2-adsorption/desorption and Scanning Electron Microscopy (SEM) techniques. The mesoporous solid with the high surface area of 710 m2/g, average pore size of 2.7 nm and high graphitization degree was applied as the nanoreactor for infiltration of molten sulfur at 150 ºC in an inert gas atmosphere. The properties of prepared nanocomposite were investigated by XRD, BET, SEM and cyclic voltammetry methods. The obtained results showed that the desired nanocomposite with enhanced conductivity successfully was synthesized.
https://ijcce.ac.ir/article_23549_d1d1af208a6d143c4442bc66de33f1a5.pdf
Graphitic mesoporous carbon
Electrical conductivity
Sulfur nanocomposite
Hard template
Cyclic voltammetry
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
11
19
10.30492/ijcce.2016.23550
23550
Synthesis and Evaluating of Nanoporous Molecularly Imprinted Polymers for Extraction of Quercetin as a Bioactive Component of Medicinal Plants
Alireza Amiri
amiri_alireza@znu.ac.ir
1
Ali Ramazani
2
Mohsen Jahanshahi
mjahan@nit.ac.ir
3
Ali Akbar Moghadamnia
moghadamnia@yahoo.com
4
Department of Chemistry, University of Zanjan, P. O. Box 45195-313 Zanjan, I.R. IRAN
Department of Chemistry, University of Zanjan, P. O. Box 45195-313 Zanjan, I.R. IRAN
Nanotechnology Research Institute, Babol Noshirvani University of Technology, Mazandaran, I.R. IRAN
Department of Pharmacology, Babol University of Medical Sciences, Babol, Mazandaran, I.R. IRAN
In this work, the template, monomer, and cross-linker with the ratio of 1:8:40 were used to synthesize Molecularly Imprinted Polymers (MIPs) for extraction of the bioactive chemical compounds from some traditional herbs as a sorbent material. Quercetin, Methacrylic Acid (MAA), Trimethylolpropanetrimethacrylate (TRIM) and Tetrahydrofuran (THF) were used as a template, functional monomer, cross-linker, and porogen, respectively. Polymer particles have been evaluated by Atomic Force Microscopy (AFM), Field Emission Scan Electron Microscopy (FESEM), Transmission Electron Microscopy (TEM) and Brunauer–Emmett–Teller (BET). The produced nanoporous MIPs, with a good specific surface area 167.899 m2/g comparatively to Non-Imprinted Polymers (NIPs), exhibited a good affinity to quercetin with the binding capacity of 392.08 mg/g in acetonitrile-water (1:1v/v). The results showed that the MIPs can be used as a sorbent. Thus, direct extraction of certain pharmacophoric components from herbal plants is considerable by MIPs technology.
https://ijcce.ac.ir/article_23550_cf3c113c208c5561b9cb8b82981fda36.pdf
Molecularly imprinted polymers
Quercetin
Medicinal plants
Nanoporous
Extraction
Bioactive
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
21
29
10.30492/ijcce.2016.23551
23551
Solid–Solid Synthesis, Crystal Structure and Thermal Decomposition of Copper(II) Complex of 2-Picolinic Acid
Di Li
leedy0109@163.com
1
Guo-Qing Zhong
zgq316@163.com
2
Qing Zang
zangqing21@163.com
3
Department of Chemistry, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, CHINA
Southwest University of Science and Technology
Department of Chemistry, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, CHINA
The copper(II) complex [Cu(pic)2]·2H2O was synthesized with 2-picolinic acid (Hpic) and copper acetate as reactants by room temperature solid-solid reaction. The composition and structure of the complex was characterized by elemental analyses, single crystal X-ray diffraction, X-ray powder diffraction, FT-IR spectroscopy and thermogravimetry-differential scanning calorimetry. The crystal structure of the copper(II) complex belongs to triclinic system and space group , with cell parameters of a = 5.1274(16) Å, b = 7.641(2) Å, c = 9.209(2) Å,α = 74.91(2)°, β = 84.56(2)°, γ = 71.58(3)°, V = 338.48(15) Å3, Z = 1, F(000) = 175, R1 = 0.0530, and wR2 = 0.1141. The Cu(II) ion is six-coordinated through two nitrogen atoms from two pyridine rings and four carboxyl oxygen atoms from four different 2-picolinic acid anions, forming an elongated octahedral geometry. The interaction of carboxylate O and Cu(II) forms an one-dimensional chain structure, and the complex exhibits a two-dimensional layered structure by hydrogen bonds. The thermal decomposition processes of the complex under air include dehydration and pyrolysis of the ligand, and the final residue at about 400 °C is copper oxide.
https://ijcce.ac.ir/article_23551_89c0716e1df204aa3936eb17055c11b1.pdf
2-Picolinic acid
Copper(II) complex
Room temperature solid-solid reaction
Crystal structure
Thermal decomposition
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
31
37
10.30492/ijcce.2016.23554
23554
One-pot Synthesis and Characterization of Highly Functionalized Thiazoles
Hamid Beyzaei
hbeyzaei@yahoo.com
1
Adel Beygi
adelbeygi91@yahoo.com
2
Reza Aryan
rezaaryan@uoz.ac.ir
3
University of Zabol, Zabol, Iran
Department of Chemistry, Faculty of Science, University of Zabol, Zabol, I.R. IRAN
Department of Chemistry, Faculty of Science, University of Zabol, Zabol, I.R. IRAN
A facile and efficient one-pot three-step process for the synthesis of 5-acetyl-2-imino-4-methylthiazoles via the cyclocondensation of 3-thiocyanatoacetylacetone with various hydrazine or hydrazide derivatives in EtOH has been developed. 3-Thiocyanatoacetylacetone itself has been synthesized as the intermediate from substitution reaction of thiocyanate with 3-chloroacetylacetone. Better results were obtained by three-step procedures vs one-step reaction. The proposed method does not require techniques such as extraction and chromatography. Surprisingly, 3,5-dimethyl-4-thiocyanato-1H-pyrazoles were not produced in this reaction, it was proved based on the existence of the acetyl group in the products. The molecular structures of newly synthesized compounds were elucidated on the basis of elemental analysis and spectral data.
https://ijcce.ac.ir/article_23554_efe2f2723e2de8a9d2237b5a1181ea3f.pdf
One-pot synthesis
Thiazole
Cyclocondensation
Hydrazine
Hydrazide
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
39
47
10.30492/ijcce.2016.23555
23555
Synthesis of 3,4-Dihydroquinoxalin-2-Amine, Diazepine-Tetrazole and Benzodiazepine-2-Carboxamide Derivatives with the Aid of H6P2W18O62/Pyridino-Fe3O4
Akbar Hassanpour
hassanpour@marandiau.ac.ir
1
Rahim Hosseinzadeh-Khanmiri
2
Khatereh Ghorbanpour
3
Jafar Abolhasani
4
Yones Mosaei Oskoei
yonesmosaie@yahoo.com
5
Department of Chemistry, Marand Branch, Islamic Azad University, Marand, I.R. IRAN
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, I.R. IRAN
Department of Chemistry, Marand Branch, Islamic Azad University, Marand, I.R. IRAN
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, I.R. IRAN
North-West Institute of Science and Technology, Malek Ashtar University of Technology, Urmia, I.R. IRAN
In the current study, a magnetic inorganic–organic nanohybrid material (HPA/TPI-Fe3O4) was produced and used as an efficient, highly recyclable and eco-friendly catalyst for the one-pot and multicomponent synthesis of 3,4-dihydroquinoxalin-2-amine, diazepine-tetrazole and benzodiazepine-2-carboxamide derivatives with high yields and in a short range of time (20–35 min). The nanohybrid catalyst was prepared by the chemical anchoring of H6P2W18O62 onto the surface of modified Fe3O4 NPs with N-[3-(triethoxysilyl)propyl]isonicotinamide (TPI) linker.The magnetically recoverable catalyst was easily recycled at least ten times without any loss of catalytic activity. The structures of obtained products are certified by 1H and 13C NMR spectra.
https://ijcce.ac.ir/article_23555_d2571a89de42ae3f6cfe6b152dc75439.pdf
H6P2W18O62/pyridino-Fe3O4
3,4-Dihydroquinoxalin-2-amine
Diazepine-tetrazole
Benzodiazepine-2-carboxamide
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
49
60
10.30492/ijcce.2016.23556
23556
Optimization of Atropine Extraction Process from Atropa Belladonna by Modified Bubble Column Extractor with Ultrasonic Bath
Akbar Abbaspour
abbaspour@gmail.com
1
Parissa Khadiv Parsi
kparsi@ut.ac.ir
2
Farahnaz Khalighi-Sigaroodi
3
Reza Ghaffarzadegan
reza.ghafary@yahoo.com
4
School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563 Tehran, I.R. IRAN
School of Chemical Engineering, University College of Engineering, University of Tehran, I.R. IRAN
Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, P.O. Box 31375-369 Karaj I.R. IRAN
Institute of Medicinal Plants, ACECR, Karaj, Iran
Modified Bubble Column Extraction with Ultrasonic Bath (BCE-UB) method was used to extract atropine from the stem and leaves of Atropa belladonna. Optimum condition were obtained with Kamada solvent which was chloroform-methanol-ammonia 15:15:1(v/v/v) as extraction solvent, the particle size of less than 350 µm, an extraction time of 23.95 min, a liquor to material ratio of 15.08 mL/g and an air flow of 6.31 mL/min.g. In this state, percent of extracted atropine was calculated which was equal to 6.81%. Percent of extracted atropine was 6.31% that showed a little difference compared to the predicted value. In order to study the effect of bubbles on the extraction rate, the same extraction with the previous method was performed in a stirred tank. Percent of atropine was 5.59%.
https://ijcce.ac.ir/article_23556_c8658b3ac0ad7008631b8e029ae03d22.pdf
Atropine
Bubble column extraction
Uniform design
UV-Visible spectroscopy
Atropa belladonna
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
61
71
10.30492/ijcce.2016.23557
23557
Corrosion Protection of Copper with Hybrid Sol-Gel Containing 1H-1, 2, 4-triazole-3-thiol
Jaqanathan Balaji
1
Matur Gopalakrishnan Sethuraman
mgsethu@gmail.com
2
Department of Chemistry, Gandhigram Rural Institute-Deemed University, Gandhigram-624 302, Tamil Nadu, INDIA
Department of Chemistry, Gandhigram Rural Institute-Deemed University, Gandhigram-624 302, Tamil Nadu, INDIA
To improve the corrosion protection of copper metal, 0.01M concentration of 1H-1,2,4-triazole-3-thiol (TAT) was incorporated into the hybrid sol-gel monolayers containing 3-glycidoxypropyltrimethoxysilane (GPTMS) and Tetraethoxysilane (TEOS). It was further subjected to hydrolysis and condensation reaction to form a sol-gel matrix. The TAT-doped hybrid sol-gel coating was applied over the copper surface by Self-Assembled Monolayer (SAM) method. The resultant coating was characterized by Fourier Transform Infrared (FT-IR), X- RayDiffraction (XRD) analysis, Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDX) spectroscopy. The corrosion protection ability of these coatings was evaluated by Electrochemical Impedance Studies (EIS) and Potentiodynamic Polarization (PP) measurements in 3.5% NaCl medium. The EIS and PP results showed that TAT doped hybrid sol-gel coating exhibit better corrosion protection than the undoped hybrid coating alone. Thus these studies revealed the enhancement of corrosion protection of TAT doped hybrid sol-gel coating on the copper metal surface.
https://ijcce.ac.ir/article_23557_fd6dd44635c02be62f0bca1e86572e78.pdf
Sol-gel
Hybrid
copper
Corrosion
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
73
79
10.30492/ijcce.2016.23558
23558
Microwave Assisted Extraction of Olive Oil Pomace by Acidic Hexane
Hocine Kadi
hocinekadi@yahoo.fr
1
Ramdane Moussaoui
rammousse@yahoo.fr
2
Sadia Djadoun
3
Patrick Sharrock
4
Laboratoire de chimie appliquée et génie chimique, Université M. Mammeri de Tizi - Ouzou (Hasnaoua), Tizi-Ouzou. 15000 ALGERIE
Laboratoire de chimie appliquée et génie chimique, Université M. Mammeri de Tizi - Ouzou (Hasnaoua), Tizi-Ouzou. 15000 ALGERIE
Laboratoire de chimie appliquée et génie chimique, Université M. Mammeri de Tizi - Ouzou (Hasnaoua), Tizi-Ouzou. 15000 ALGERIE
Laboratoire d’études et de recherches en imagerie spatiale et médicale, Université Paul Sabatier, Castres. 81104 FRANCE
In this study, Microwave-Assisted Solvent Extraction (MASE) was used to recover oil residues from pomace olive using acidic hexane. Results obtained demonstrated that oil extraction yield increased with time, the amount of acetic acid in hexane and power radiation. For both radiation powers used (170 and 510W), the optimal extraction time and most interesting content of acetic acid in hexane are 1.5 minutes and 5.0% respectively. Oil yield obtained at power 510 W was slightly higher than those corresponding to 170 W. Compared to results obtained with pure hexane, the yield increases were 8.4 % at 170 W and 6.0% at 510 W. However, the oil extracted from pomace olive was found to be of poor quality; indeed only phenolic compounds concentration increased significantly with acetic acid content.
https://ijcce.ac.ir/article_23558_e4c749b4d037e1aa5813b5f2cf4091c9.pdf
Microwave
Oil extraction
Olive pomace
Oil characterization
Acidic hexane
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
81
87
10.30492/ijcce.2016.23589
23589
Complete Treatment of Compost Leachate Using Integrated Biological and Membrane Filtration Processes
Hassan Hashemi
hashemi@hlth.mui.ac.ir
1
Abbas Khodabakhshi
khodabakhshi16@gmail.com
2
Research Center for Health Sciences, Department of Environmental Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, I.R. IRAN
Assistant Professor, Department of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran
A lab-scale SBR equipped with a flat sheet membrane in submerged configuration that is named MSBR was used for the treatment of composting leachate. It was fed by biologically treated leachate with overall 70-1360 mg/L Chemical Oxygen Demand (COD). The values of pH, Electrical Conductivity (EC), and Dissolved Oxygen (DO) were monitored routinely. However, analysis of total COD, Soluble COD (SCOD), Biological Oxygen Demand (BOD5), Total Suspended Solids (TSS) and Volatile Suspended Solids (VSS) was done in feed and filtrate, whenever the system reached steady state twice a week for about 6 months.In all loading rate, BOD5 concentration was less than standard limit. The removal efficiency of total COD increased in the bioreactor with time in all experiments was up to 80%.Influent SCOD varied spectacularly (50-1050mg/L) due to the leachate collection during different seasons but in the effluent, it remained relatively stable. About 60% of the feed SCOD was the non biodegradable type that was separated by the membrane.Up to 99 % further solids was removed with micropore membrane which might be mainly included in colloidal solids. The value of EC for the leachate sample was 0.86-4 mS/cm at 22 °C which decreased by membrane significantly.It was concluded that MSBR as a versatile technology with high throughput could treat composting leachate belowthe standard limit if used after proper processes.
https://ijcce.ac.ir/article_23589_449cbecd15dd57ccffe1b4f8591a80b0.pdf
Treatment
Composting leachate
MSBR
Standard
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
89
98
10.30492/ijcce.2016.23591
23591
Inhibition of Copper Corrosion by Ethanolamine in 100 ppm NaCl
Karima Abderrahim
1
Sihem Abderrahmane
abderrahmanesihem@yahoo.fr
2
Jean-Pierre Millet
3
Laboratoire d’Ingénierie Des Surfaces (L. I. S.)-Université Badji Mokhtar B.P. 12 - 23000 Annaba, ALGERIE
Laboratoire d’Ingénierie Des Surfaces (L. I. S.)-Université Badji Mokhtar B.P. 12 - 23000 Annaba, ALGERIE
INSA-Lyon, MATEIS CNRS UMR5510,F-69621 Villeurbanne, FRANCE
We study copper corrosion inhibition by ethanolamine (ETA)with (0, 0.2 ,0.3,0.4,0.5) vol.% concentrations in 100 ppm NaCl solution. This work is carried out by potentiodynamic measurements and Electrochemical Impedance Spectroscopy (EIS). The substrates' surface morphologies are examined by Scanning Electron Microscopy (SEM). ETAis characterized by NMR spectra of ETA1H and 13C and Fourier Transform InfraRed Spectroscopy (FT-IR).Quantum chemical calculation (DFT) is conducted to correlate the adsorption mechanism with ETAmolecule structure. The results show thatETA acts as a mixed inhibitor; so at 0.4 vol. %, the current density ( i ) and the polarization resistance (Rp) are respectively 0.8µA/cm2 and 28.62 Ω.cm2 with 99.78% corresponding efficiency . ETA adsorption obeys to Langmuir isotherm and takes place on the copper surface through chemical and physical mixed-type adsorption.
https://ijcce.ac.ir/article_23591_54c21b57d998559c669da88868c9f303.pdf
Copper Corrosion
Corrosion inhibitor
ETA
EIS
Polarization
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
99
112
10.30492/ijcce.2016.23592
23592
Electrooxidation of Formic Acid and Formaldehyde on the Fe3O4@Pt Core-Shell Nanoparticles/Carbon-Ceramic Electrode
Biuck Habibi
b.habibi@azaruniv.ac.ir
1
Serveh Ghaderi
servehghaderi20@gmail.com
2
Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, I.R. IRAN
Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz, I.R. IRAN
In the present work, the electrooxidation of formic acid and formaldehyde; potentially important fuels for future fuel cells, was investigated on the Fe3O4@Pt core-shell nanoparticles/carbon-ceramic electrode (Fe3O4@Pt/CCE). The Fe3O4@Pt nanoparticles were prepared via a simple and fast chemical method and their surface morphology, nanostructure properties, chemical composition, crystal phase, and electrochemical behavior were investigated by scanning electron microscope, transmission electron microscope, X-ray diffraction, energy dispersive X-ray spectroscopy and electrochemical methods, respectively. Then the electrocatalytic activity of the Fe3O4@Pt/CCE toward the oxidation of formic acid and formaldehyde was studied in details. The primary electrochemical analysis shows that the Fe3O4@Pt/CCE has superior catalytic activity and stability for formic acid and formaldehyde oxidation compared to Pt-alone nanoparticles on the carbon-ceramic electrode (Pt/CCE). The present investigation demonstrates that the Fe3O4@Pt/CCE electrocatalyst may play a significant role in future fuel cell applications.
https://ijcce.ac.ir/article_23592_d375a11b0d0f236df8df88baec5aaa4e.pdf
Fe3O4@Pt nanoparticles
Core-shell
Carbon-ceramic electrode
Electrooxidation
Formic acid
Formaldehyde
Fuel cell
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
113
124
10.30492/ijcce.2016.23593
23593
Optimized Removal of Sodium Dodecylbenzenesulfonate by Fenton-Like Oxidation Using Response Surface Methodology
Kamran Taghavi
taghavi.kamran@yahoo.com
1
Saeid Purkareim
poorkareem@yahoo.com
2
Alireza Pendashteh
arpendashteh@yahoo.com
3
Naz Chaibakhsh
nchaibakhsh@guilan.ac.ir
4
Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, 3391 Rasht, I.R. IRAN
Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, 3391 Rasht, I.R. IRAN
The Caspian Sea Basin Research Centre, University of Guilan, 4199613776 Rasht, I.R. IRAN
Department of Chemistry, Faculty of Science, University of Guilan, 41335-19141 Rasht, I.R. IRAN
This study investigates the degradation of sodium dodecylbenzenesulfonate (SDBS) in aqueous solution by the Fenton-like oxidation process. The effects of different parameters such as concentrations of ferric chloride and hydrogen peroxide, pH and reaction time on the SDBS removal and Chemical Oxygen Demand (COD) reduction were evaluated. Response Surface Methodology (RSM) with Central Composite Design (CCD) was used to study and optimize the oxidation process. A quadratic polynomial equation could accurately model the SDBS removal with an R2 of 0.98. The results showed that pH and time were the most significant parameters affecting SDBS removal and COD reduction, respectively. A high SDBS (90.5%) and COD (70.7%) reduction efficiency were obtained at the optimal conditions of 60 min, pH 4 and 8.82 mM of H2O2 and 3.67mM of Fe+3. In this work, the effects of some organic compounds on the degradation of SDBS by the Fenton-like process were examined. The results showed that 50 mgL-1of oxalic acid slightly enhanced the SDBS degradation efficiency while acetic acid and Ethylenediaminetetraacetic acid (EDTA) reduced it.
https://ijcce.ac.ir/article_23593_9af12a53c2c1b5b8b0e9ad99ca6bae0d.pdf
Degradation
Fenton-like process
Response surface methodology
Sodium dodecylbenzenesulfonate
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
125
134
10.30492/ijcce.2016.23594
23594
Selective and Efficient Ligandless Water-in-Oil Emulsion Liquid Membrane Transport of Thorium(IV) Ions
Mahdieh Koorepazan Moftakhar
m.moftakhar@znu.ac.ir
1
Leila Habibi
leilahabibi22@yahoo.com
2
Mohammad Reza Yaftian
yaftian@znu.ac.ir
3
Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, P. O. Box 45371-38791, Zanjan, I.R. IRAN
Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, P. O. Box 45371-38791, Zanjan, I.R. IRAN
Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan
The present paper concerns on the selective and very efficient transport of thorium(IV) ions from aqueous solutions through an emulsion liquid membranes composed by paraffin and a surfactant, without carrier requirement. The influence of pH of the external aqueous phase, the surfactant concentration in the membrane phase, the type, and concentration of the acid used in the receiving phase, the emulsification and mixing speed on the process efficiency were examined and discussed. The optimized conditions were: liquid paraffin as diluent, 5% surfactant (nonionic polyamine surfactant span-80), emulsification rate 5250 rpm, 15 min of stirring at 750 rpm in the extraction step, pH 5, oil/aqueous ratio of 3 in emulsions and using 0.3 M solution of sulfuric acid as stripping phase. Under optimized experimental conditions, thorium ions were selectively and quantitatively transported from its mixture solution with lanthanides La(III), Sm(III), Eu(III) and Er(III). The concentration of thorium ions, in single component transport experiment, was measured spectrophotometrically using ArsenazoIII as the indicator at 655 nm, and the analysis of metal ions in competitive experiments was performed by an ICP-OES instrument under recommended conditions provided by the instrument’s manufacturer.
https://ijcce.ac.ir/article_23594_bb36da17610838bfe8752a595ce18836.pdf
Emulison liquid membrane
Ligandless transport
Thorium
Lanthanides
Separation
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
135
141
10.30492/ijcce.2016.23595
23595
Crossflow Filtration of Sodium Chloride Solution by A Polymeric Nanofilter: Minimization of Concentration Polarization by a Novel Backpulsing Method
Masoud Kambarani
1
Hossein Bahmanyar
hbahmany@ut.ac.ir
2
Mohammad Ali Mousavian
3
Seyed Mahmoud Mousavi
mmousavi@um.ac.ir
4
Membrane Laboratory, Academic Center for Education, Culture and Research (ACECR), Tehran, I.R. IRAN
Surface phenomena and Liquid-liquid Extraction Research Laboratory, University of Tehran, Tehran, I.R. IRAN
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, I.R. IRAN
Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
In the present study, the production of low-salt water from salty water by nanofiltration as well as membrane fouling was investigated. Furthermore, a new method was proposed and tested experimentally for creating the backpulse in order to minimization of fouling and increase of the filtration efficiency. In the proposed method, the permeate was used instead of gas for creating the backpulse. To test the quality of this method, experiments were conducted using NaCl solution. In these experiments, the backpulse interval was changed and in constant backpulse duration, the effect of this parameter on the permeate flux was investigated. The results confirmed the effectiveness of the proposed system, especially when the concentration of the saline solution was increased.
https://ijcce.ac.ir/article_23595_e0e3a122f37479d70f4d01daf0801953.pdf
Nanofiltration
Membrane
Fouling
Cross flow filtration
Backpulse duration
Backpulse interval
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
143
152
10.30492/ijcce.2016.23596
23596
Clean Hydrogen Energy and Electric Power Production with CO2 Capturing by Using Coal Gasification
Raheel Ahmad
chemicalengineer334@gmail.com
1
Iqra Saleem
iqra.saleem@uet.edu.pk
2
Department of Chemical Engineering, University of Engineering and Technology, G.T. Rd, Lahore 54890, PAKISTAN
Department of Chemical Engineering, University of Engineering and Technology, G.T. Rd, Lahore 54890, PAKISTAN
Clean hydrogen is the major energy carrier for power production. The conversion of CO to CO2 and zero emission during hydrogen energy production causes high capital cost. It is a matter of prestige to optimize the process in order to make zero emission and cost effective production of clean hydrogen energy and electric power. In this era, coal gasification is the most promising technology for the clean hydrogen energy and electric power production with simultaneously capturing of CO2. The experimental set up used in this scheme consists of Fluidized Bed Coal Gasifier (FBCG), syngas treatment unit, electricity generation unit, CO2 capturing unit and clean hydrogen adsorption unit. This paper shows the analysis of low sulphur Makarwal (Pakistan) coal. The Oxygen to Steam (O/S) ratio is optimized in order to produce syngas efficiently in the FBCG. The desulphurization unit reduces the H2S contents below than 1ppm. In this experimental plant, the feed rate 37.5 tons/hr of coal is used and clean hydrogen is produced at the rate of 1.30-1.40 tons/h.
https://ijcce.ac.ir/article_23596_90ebce47e78f723bbda23800d07fe23a.pdf
Makarwal coal
coal gasification
Clean hydrogen
CO2 capturing
Fluidized bed coal gasifier
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2016-12-01
35
4
153
165
10.30492/ijcce.2016.23597
23597
Quantitative Safety and Health Assessment Based on Fuzzy Inference and AHP at Preliminary Design Stage
Wei Jiao
jiaow2008@163.com
1
Shuguang Xiang
xsg@qust.edu.cn
2
Teachers College ,Qingdao University, Qingdao, 266071,Shandong,CHINA
The Hi-Tech Institute for Petroleum and Chemical Industry, Qingdao University of Science and Technology, Qingdao, 266042,Shandong,CHINA
Quantitative assessment is the most important means to identify hazard potential and manage risk for an industrial process. The implement of quantitative assessment in the early stage will help to develop inherently safer process, eliminating the hazard and reduce the possibility of accidental chain events and the magnitude of consequences. In this paper, after reviewing the presently available assessment method, we present the disadvantages of current technology in several aspects. Focusing on the main disadvantage of subjectivity in two aspects of index valuing and weighting, which is a serious barrier to measure the real level of process safety, we propose a quantitative assessment method integrated fuzzy inference and Analytic Hierarchy Process(AHP) to quantify safety and health hazards of chemical process route in preliminary design stage. The purpose of integrating fuzzy inference into it is to reduce the subjectivity of index valuing system. The fuzzy inference system is designed without medium variable in order to eliminate its negative effect on assessment result. Index weighting is determined by AHP more objectively based on the ordering of inherent safety guidewords. Finally, the proposed method is applied to assessment nine competing routes of acetic acid manufacture to present its improvement.
https://ijcce.ac.ir/article_23597_24a0d83aa3e7f07cca9726e77162eb31.pdf
Safety assessment
Health assessment
Index weighting
Fuzzy inference
AHP
Inherent safety