eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
1
8
10.30492/ijcce.2017.23801
23801
Growth and Optical Properties Investigation of Pure and Al-doped SnO2 Nanostructures by Sol-Gel Method
Ali Reza Razeghizadeh
razeghizadeh@yahoo.com
1
Lila Zalaghi
leylazalaghi@yahoo.com
2
Iraj Kazeminezhad
i.kazeminezhad@scu.ac.ir
3
Vahdat Rafee
v.rafee@gmail.com
4
Department of Physics, Faculty of Science, Payamenoor University, P.O. Box 19395-3697 Tehran, I.R. IRAN
Department of Physics, Faculty of Science, Payamenoor University, P.O. Box 19395-3697 Tehran, I.R. IRAN
Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, I.R. IRAN
Department of Physics, Faculty of Science, Payamenoor University, P.O. Box 19395-3697 Tehran, I.R. IRAN
SnO2 nanoparticles with different percentage of Al (5%, 15%, and25%) were synthesized by sol-gel method. The structure and nature of nanoparticles are determined by of X-ray diffraction analysis. Also, morphology of the samples is evaluated by SEM. Moreover, the optical properties of the samples are investigated with UV-Visible and FT-IR. The XRD patterns are indicated that all samples and incorporation aluminum ions into the SnO2 lattice have tetragonal rutile structure. The crystalline size of nanoparticles is decreased with increasing the Al percentage. The SEM results confirmed that the size of nanoparticles decreases with increasing the Al percentage. Also, FT-IR and UV-Visible results showed that the optical band gap of nanoparticles increases with the increasing the Al percentage. Finally, we have used the EDX analysis to study the chemical composition of the products. Pure tin and oxygen have been observed. The doped samples showed the existence of Al atoms in the samples of the crystal structure of SnO2.
https://ijcce.ac.ir/article_23801_58b4cc2712ec27e8b2ea8aaf18424ae9.pdf
nanoparticles
SnO2
Sol-gel
Al-doped
Optical Properties
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
9
16
10.30492/ijcce.2017.24714
24714
Synthesis of new 1, 8-dioxo-octahydroxanthene derivatives containing 4-thiazolidinone moiety containing 4-thiazolidinone moiety
Maryam Robati
robati63@gmail.com
1
Dadkhoda Ghazanfari
dadkhodaghbk@gmail.com
2
Mohammad Reza Islami
mrislami@uk.ac.ir
3
Kazem Saidi
saidik@uk.ac.ir
4
Department of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, P.O. Box 7635131167 Kerman, I.R. IRAN
Department of Chemistry, Faculty of Science, Kerman Branch, Islamic Azad University, P.O. Box 7635131167 Kerman, I.R. IRAN
Department of Chemistry, Shahid Bahonar University of Kerman, P.O. Box 76169 14111 Kerman, I.R. IRAN
Department of Chemistry, Shahid Bahonar University of Kerman, P.O. Box 76169 14111 Kerman, I.R. IRAN
A series of novel 1, 8-dioxo-octahydroxanthene derivatives containing 4-thiazolidinone framework (4a-f) were synthesized through a four-step reaction starting from the reduction of nitro derivatives of 1, 8-dioxo-octahydroxanthenes. The resulting aminoxanthenes converted to thiourea derivatives via their reaction with methyl isothiocyanate. The final products were synthesized through the reaction of thiourea derivatives with dialkylacetylene dicarboxylates. All of the steps were carried out under easy and mild reaction conditions in the absence of expensive catalysts or esoteric starting materials. The structures of compounds 3a-c and the final products were characterized according to their physical constants, spectral data such as NMR, IR spectra and also elemental analysis.
https://ijcce.ac.ir/article_24714_83da0648f883d15c460a03bf9448353e.pdf
1, 8-dioxo-octahydroxanthene
4-thiazolidinone
dialkyl acetylene dicarboxylate
dimedone
1, 3-cyclohexanedione
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
17
22
10.30492/ijcce.2017.24034
24034
Synthesis of Polyfunctionalized Pyrroles by a PPh3-Promoted Condensation Reaction Between Ammonium Acetate, Dialkyl Acetylenedicarboxylate and Arylglyoxals
Hossein Anaraki-Ardakani
hosseinanaraki@yahoo.com
1
Parisa Nkomanesh
p.nikoomanesh85@gmail.com
2
Department of Chemistry, Mahshahr Branch, Islamic Azad University, Mahshahr, I.R. IRAN
Department of Chemistry, Mahshahr Branch, Islamic Azad University, Mahshahr, I.R. IRAN
A simple and efficient synthesis of some polyfunctionalized pyrrole derivatives by a triphenylphosphine-promoted condensation reaction between dialkyl acetylenedicarboxylates, arylglyoxals, and ammonium acetate is described. This present method carries several advantages, such as good yields, a simple procedure, non-hazardous reaction conditions and starting from easily accessible substrates
https://ijcce.ac.ir/article_24034_50a107f0890169e7b711284eda7082a9.pdf
Dialkyl acetylenedicarboxylates
Triphenylphosphine
Ammonium acetate
Intramolecular Wittig reaction
Arylglyoxals
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
23
32
10.30492/ijcce.2017.26368
26368
Electrosynthesis, Characterization and Corrosion Inhibition Study of DBSA-doped Polyaniline Coating on 310 Stainless Steel
Yaser Jafari
y.j.arisman@gmail.com
1
Sayed Mehdi Ghoreishi
s.m.ghoreishi@kashanu.ac.ir
2
Mehdi Shabani-Nooshabadi
m.shabani@kashanu.ac.ir
3
Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN
Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN
Department of Analytical Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R. IRAN
The synthesis of polyaniline doped with dodecylbenzene sulphonic acid (Pani-DBSA) coatings on 310 stainless steel (310 SS) surfaces has been investigated by using the galvanostatic method. The synthesized coatings were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), UV-Visible absorption spectrometry and Scanning Electron Microscopy (SEM).The anticorrosion performances of Pani-DBSA coatings were investigated in 5% NaCl solution by the potentiodynamic polarization technique and Electrochemical Impedance Spectroscopy (EIS). The corrosion rate of Pani-DBSA coated 310 SS was found ∼30 times lower than bare 310 SSand potential corrosion increased from -0.84 V versus Ag/AgCl for uncoated 310 SS to -0.71 V versus Ag/AgCl for Pani-DBSA coated 310 SS electrodes. Electrochemical measurements indicate that Pani-DBSA coated have good inhibiting properties with a mean efficiency of ~96% at 5 mA cm-2 current density applied to 310 SS corrosion in chloride media. The results of this study clearly ascertain that the Pani-DBSA has an outstanding potential to protect 310 SS against corrosion in a chloride environment.
https://ijcce.ac.ir/article_26368_ff8c26a5b9236f4ec8419b53c30e7c2f.pdf
Electrosynthesis
310 Stainless Steel
Corrosion
EIS
dodecylbenzene sulphonic acid
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
33
42
10.30492/ijcce.2017.25020
25020
Controlled Green Synthesis of Silver Nanoparticles Using Culture Supernatant of Filamentous Fungus
Sepideh Hamedi
se_hamedi@sbu.ac.ir
1
Seyed Abbas Shojaosadati
shoja_sa@modares.ac.ir
2
Soheila Shokrollahzadeh
shokrollahzadeh@yahoo.com
3
Sameereh Hashemi-Najaf Abadi
s.hashemi@modares.ac.ir
4
Bio-Refinery Group, Faculty of New Technologies Engineering, Shahid Beheshti University, Po.Box 47815-168, Mazandaran, Zirab Campus, I.R. IRAN
Biotechnology group, Chemical Engineering Faculty, Tarbiat Modares University, P.O. Box 14115-114 Tehran, I.R. IRAN
Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), P.O. Box 15815-3538 Tehran, I.R. IRAN
Biotechnology group, Chemical Engineering Faculty, Tarbiat Modares University, P.O. Box 14115-114 Tehran, I.R. IRAN
The focus of this study was to evaluate the effects of some parameters influencing the size and size distribution of the silver nanoparticles (AgNPs) produced by culture supernatant of Fusarium oxysporum. Results revealed that in the reaction solution containing equal volume of silver nitrate and culture supernatant; pH, temperature, and light source can control the AgNP’s characteristics. The particle size decreased with an increase in pH. The average size of AgNPs, formed in reaction solutions, decreased as temperature increased from 40 °C to 121 °C. The smallest AgNPs with the highest polydispersity (average size of 14nm and PDI of 0.37) were obtained in reaction solution incubated at 121 °C. Also, the use of UV radiation in reaction solution resulted in the production of the very small AgNPs with the narrowest size distribution (average size of 9.7nm and PDI of 0.2). X-ray diffraction analysis verified the crystalline nature of synthesized AgNPs. Also, transmission electron microscopy analysis confirmed the production of spherical shape nanoparticles.
https://ijcce.ac.ir/article_25020_d8675584558408db5b722bdcd5b989c9.pdf
Silver nanoparticles (AgNPs)
Controlled Biosynthesis
Fusarium oxysporum
culture supernatant
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
43
54
10.30492/ijcce.2017.25477
25477
Synthesis, Characterization and in Vitro Antimicrobial Screening of the Xanthate Derivatives and their Iron(II) Complexes
Hassan Mansouri Torshizi
hmtorshizi@hamoon.usb.ac.ir
1
Sareh Zareian-Jahromi
sareh_zareianjahromi@yahoo.com
2
Maram Saeidifar
m.saidifar@gmail.com
3
Ali Ghasemi
m_saidifar@yahoo.com
4
Hamed Ghaemi
saeidifar@merc.ac.ir
5
Ali Heydari
hmtorshizi@gmail.com
6
Department of Chemistry, University of Sistan and Baluchestan, Zahedan, I.R. IRAN
Department of Chemistry, University of Sistan and Baluchestan, Zahedan, I.R. IRAN
Department of Nanotechnology and Advanced Materials, Materials and Energy Research Center, Karaj, I.R. IRAN
Department of Biology and Microbiology, University of Sistan and Baluchestan, Zahedan, I.R. IRAN
Islamic Azad University, Neyshabur Branch, Neyshabur, I.R. IRAN
Department of Chemistry, University of Sistan and Baluchestan, Zahedan, I.R. IRAN
Seven reported xanthate ligands and their new Fe(II) complexes of formulaNa[Fe(R-OCSS)3], where R is ethyl-, propyl-, butyl-, pentyl-, Hexyl-, heptyl- and octyl-xanthate have been synthesized. They have been characterized using elemental analysis, molar conductance, FT-IR, UV-Vis and 1H NMR spectroscopic techniques and melting-, decomposition-points for ligands and complexes respectively. All the ligands and their Fe(II) complexes have been evaluated for their antimicrobial activity against four gram-positive bacteria, four gram-negative bacteria and three fungi by agar disc diffusion technique. The MIC values of the compounds exhibited significant antifungal activity but showed lower antibacterial activity. The iron(II) complexes are found to possess higher antimicrobial activity than their counterpart ligands thus improving its antimicrobial efficacy. Hydrocarbon chain length of the ligands coordinated to Fe(II) centers seemed to be important for their antifungal as well as antibacterial activities.
https://ijcce.ac.ir/article_25477_eff3f79ae10aae35e82f68726896c71e.pdf
Xanthate
Fe(II) complex
Antifungal activity
Antibacterial activity
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
55
63
10.30492/ijcce.2017.25250
25250
Influences of NCO/OH and triol/diol Ratios on the Mechanical Properties of Nitro-HTPB Based Polyurethane Elastomers
Hadi Abusaidi
hadinet79@gmail.com
1
Hamid Reza Ghaieni
h.r.ghaieni@gmail.com
2
Mostafa Ghorbani
mostafa.110164@gmail.com
3
Department of Chemistry and Chemical Engineering, Faculty of Chemistry, Malek-Ashtar University of Technology (MUT), Tehran, I.R. IRAN
Department of Chemistry and Chemical Engineering, Faculty of Chemistry, Malek-Ashtar University of Technology (MUT), Tehran, I.R. IRAN
Department of Chemistry and Chemical Engineering, Faculty of Chemistry, Malek-Ashtar University of Technology (MUT), Tehran, I.R. IRAN
The present study describes the effect of NCO/OH and triol/diol ratios on the mechanical properties of Nitro functionalized Hydroxyl-terminated polybutadiene (Nitro-HTPB) elastomers. The progress of the cure reaction of Nitro-HTPB and toluene diisocyanate (TDI) is evaluated by following up the variations in the IR absorption bands of the NCO stretching and the CO Stretching. Experiments are carried out at NCO/OH ratios (R values) ranging from 0.8 to 1.2 and triol/diol ratios in the range of 0.05-0.7. Also as the R-value increases, the tensile strength increases, and elongation decreases. The rubbery character of elastomers is improved followed by increased rigidity with an increase in triol/diol value of 0.05. In general, desirable mechanical properties were achieved for the polyurethane elastomers of Nitro-HTPB as a novel energetic binder.
https://ijcce.ac.ir/article_25250_bfaa1389527c87e693e72d02cc3482cc.pdf
Mechanical properties
Elastomer
Nitro-HTPB
Polyurethane
TDI
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
65
75
10.30492/ijcce.2017.24338
24338
The Effect of Ziziphora clinopodioides Essential Oil and Nisin on Chemical and Microbial Characteristics of Fish Burger during Refrigerated Storage
Reza Shahinfar
shahinfar56@yahoo.com
1
saeid khanzadi
khanzadi@um.ac.ir
2
Mohammad Hashami
mo_hashemi@hotmail.com
3
Mohammad Azizzadeh
azizzadeh@gmail.com
4
Aram Bostan
arambostan@yahoo.com
5
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Departments of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, I.R. IRAN
Department of Clinical Science, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Food Nanotechnology Department, Research Institute of Food Science and Technology (RIFST), Mashhad, I.R. IRAN
Ziziphora clinopodioides is from the genus of Ziziphora and family of Lamiaceae,which grows in Iran and Turkey. This study was conducted to preserve the chemical and microbial quality of trout fish burger during storage using Ziziphora clinopodioides essential oil (ZEO) individually and in combination with nisin. Firstly, the chemical composition of ZEO was determined using GC-MS analysis. Different treatments of trout fish burger were formulated using ZEO and nisin as natural preservatives, stored in refrigerator for 20 days and were analyzed for chemical (pH and Total Volatiles Base-Nitrogen (TVB-N)) and microbial (total viable count, psychotropic counts, Enterobacteriaceae count and Pseudomonas spp count) characteristics.at 5-day intervals.The Results indicated a yield of 1% (w/w) for ZEO isolation and Pulegone (40.09%), Menthone (13.76%) and Isomenthone (12.31%) were identified as the major components of phytochemicals of ZEO. According to the obtained results combination of ZEO and nisin had the strongest effect on chemical and microbial quality of fish burger; however, their individual use had significant effects on preserving the chemical and microbial quality of fish burger as well. based on results of this study, formulation of ZEO and Nisin in fish burger especially in combinations can prolong its shelf life and control chemical and microbial changes during storage at 4˚ C.
https://ijcce.ac.ir/article_24338_024fb6056adf9c3ffc25efefdc8bc3f5.pdf
Chemical composition
Chemical quality
Fish burger
Total volatile base nitrogen
Ziziphora clinopodioides
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
77
88
10.30492/ijcce.2017.26640
26640
Sensory Analysis of Fish Burgers Containing Ziziphora clinopodioides Essential Oil and Nisin: The Effect of Natural Preservatives and Microencapsulation
Reza Shahinfar
shahinfar56@yahoo.com
1
Saeid Khanzadi
khanzadi@um.ac.ir
2
Mohammad Hashami
mo_hashemi@hotmail.com
3
Mohammad Azizzadeh
azizzadeh@gmail.com
4
Aram Bostan
arambostan@yahoo.com
5
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Departments of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, I.R. IRAN
Department of Clinical Science, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, I.R. IRAN
Food Nanotechnology Department, Research Institute of Food Science and Technology (RIFST), Mashhad, I.R. IRAN
The present study aimed to evaluate the effect of free and microencapsulated Ziziphora clinopodioides Essential Oil (ZEO) and Nisin individually and in combinationon sensory characteristic and shelf life of fish burger during 20 days of storage at 4±1˚C. Fish burgers were prepared and treated with free and microencapsulated form of ZEO and Nisin in 15 treatments and evaluated by 20 stable semi-trained people using a 9-point hedonic screen method on days 0, 5, 10, 15, 20. The chemical composition of fish burgers was also analyzed at the first day of storage. Results indicated that both microencapsulation and combinational use of ZEO and Nisin improved sensorial scores of treated samples during 20-day storage at 4±1˚C (P< 0.05), and samples containing microencapsulated ZEO and Nisin showed the strongest effect on preserving the sensorial quality of fish burgers.
https://ijcce.ac.ir/article_26640_0f75b9f8e56e720544b553c0906b68f4.pdf
Hedonic scale
Sensory analysis
Fish burger
encapsulation
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
89
98
10.30492/ijcce.2017.24715
24715
Cyanogen, Methylacetylene, Hydroquinone, Ethylacetylene, Aniline, Pyrrole, and Ethanol Detection by Using BNNT: DFT Studies
Sahar Mohajeri
sahar_mohajeri@yahoo.com
1
Maziar Noei
maziar.noei@hotmail.com
2
Nazanin Molaei
nazanin.molaei611@gmail.com
3
Department of Chemistry, Ardabil Branch, Islamic Azad University, Ardabil, I.R. IRAN
Department of Chemistry, College of Chemical Engineering , Mahshahr Branch, Islamic Azad University, Mahshahr, I.R. IRAN
Department of Chemistry College of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh, I.R. IRAN
Electrical sensitivity of a Boron Nitride Nano Tube (BNNT) was examined toward hydroquinone (C6H4(OH)2), cyanogens (C2N2), methylacetylene (C3H4), ethylacetylene (C4H6), aniline (C6H5NH2), ethanol (C2H5OH), pyrrole (C4H5N), molecules by using Density Functional Theory (DFT) calculations at the B3LYP/6-31G(d) level of theory. In considering the dsorption energy (Ead) of those molecules on the BNNT are sequenced: C6H5NH2(Ead= -47.55kcal/mol)> C4H5N (Ead=-26.66kcal/mol) >C2H5OH(Ead= -25.91kcal/mol)> (CN)2(Ead=-20.70kcal/mol)> C6H4(OH)2(Ead= -20.21kcal/mol) >C3H4(Ead=-12.73kcal/mol)> C4H6(Ead=-11.19kcal/mol). According to this comparison aniline molecule with Ead=-47.55 kcal/mol has the most adsorption energy among all molecules. Calculations showed that when the nanotube was doped by Si and Al atoms, the amount of HOMO/LUMO energy gap (Eg) reduced significantly. This reduced showed that BNNT is a suitable semiconductor after doping and the doped BNNT in the presence of those gases generates an electrical signal and therefore can be used potentially for gas sensors. Recent researches demonstrate that Boron nitride nanotube is a suitable adsorbent for detection and separation of those compounds.
https://ijcce.ac.ir/article_24715_62e89f6530851d4a5c4cd4d7084bf278.pdf
sensor
Nanotube
DFT
BNNT
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
99
114
10.30492/ijcce.2017.30021
30021
Incorporation of Copper/Melamine Complexes in Silica Surface Andtheir Sorption Activity of Organic Dye
Rehab G. Elsharkawy
relsharkawy@yahoo.com
1
Chemistry Department, Faculty of Science, Tanta University, Tanta, EGYPT
The efficiency and performance of supported melamine/ copper complexes, S/[CuCl2(Mel)2].2MeOH, as a new adsorbent, for the adsorptive removal of Indigo Carmine (IC) from aqueous solutions, has been evaluated with respect to several experimental conditions including contact time, initial IC concentration, temperature and adsorbent dosage. The maximum removal percentage (approximately 84%) was observed when used 0.05 g/L of S/[CuCl2(Mel)2].2MeOH, 1.5 x 10-5mol/L of initial IC concentration and contact time of 15min. The experimental data were analyzed by the Langmuir, Freundlich, and Tempkin isotherm models. The monolayer adsorption capacity of S/[CuCl2(Mel)2].2MeOHwas found to be 16.8 x 10-3mol/g by using Langmuir isotherm model. The calculation of the thermodynamic parameters such as Gibbs free energy, entropy and enthalpy changes of the ongoing adsorption process indicated the feasibility and endothermic nature of IC adsorption. The kinetics study suggested that the adsorption of IC onto S/[CuCl2(Mel)2].2MeOH proceeds according to the pseudo-second-order model.
https://ijcce.ac.ir/article_30021_fe0c69a07a74898af5c9606ba806f343.pdf
Melamine complexes
Characterization
Removal
Adsorption
indigo Carmine
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
115
127
10.30492/ijcce.2017.30035
30035
Optimization of Pb(II) Adsorption onto Australian Pine Cones-Based Activated Carbon by Pulsed Microwave Heating Activation
Abrar Muslim
abrar.muslim@che.unsyiah.ac.id
1
Process Technology Laboratory, Department of Chemical Engineering,Engineering Faculty, Syiah Kuala University, Banda Aceh, Post Code 23111, INDONESIA
This study proposed a novel method for preparing activated carbon from Australian Pine cones (APCs) to optimize Pb(II) adsorption. Based on an analysis conducted, the APCs dried powder consisted of approximately 51.32 wt% of cellulose and 21.15 wt% of lignin on average. Experiments in batch mode at 100-rpm stirring speed, pH 4.7 (± 0.3) and 27 oC (± 2 oC) were conducted to obtain the maximum adsorption capacity of Australian Pine cones activated carbon(the APCs AC) over the independent variables of contact time, initial Pb(II) concentration in solution, the concentration of NaOH activator and Pulsed Microwave Heating (PMH). As the result, the maximum Pb(II) adsorption capacity was obtained when using the APCs AC with 1 M NaOH and the PMH activation. It follows Langmuir Isotherm Model (LIM) and the pseudo-second-order kinetics model (PSOKM) with the correlation coefficients (R2) being 0.993 and 1, respectively. The LIM maximum Pb(II) adsorption capacity was 166.667 mg/g, the PSOKM maximum equilibrium Pb(II) adsorption capacity was 151.515 mg/g reached in 120-min contact time, and the PSOKM kinetics constant was 0.295 g/mg.min for 1571.89 mg/L of initial Pb(II) concentration. This optimum condition was reasonable because the PMH resulted from the dominant active site of the functional group of hydroxyl on the APCs AC for Pb(II) adsorption as shown by Fourier Transform Infrared Spectroscopy analysis, and more pores were shown in Scanning Electron Microscopy (SEM) analysis.
https://ijcce.ac.ir/article_30035_6ce2e90cef9d2542dc6426d94fbb4eb7.pdf
Australian pine cones
Adsorption
Isotherm
Kinetics, Pulsed microwave heating
Optimization
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
129
141
10.30492/ijcce.2017.25481
25481
Response Surface Methodology Optimization of Cobalt (II) and Lead (II) Removal from Aqueous Solution Using MWCNT-Fe3O4 Nanocomposite
Milad Goleij
milad.goleij@hotmail.com
1
Hossein Fakhraee
hossein.fakhraee@hotmail.com
2
Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, I.R. IRAN
Department of Passive Defense Research Group, Logistics and Crisis Management, Malek Ashtar University of Technology, Tehran, I.R. IRAN
The present investigation describes the evaluation of feasibility of MWCNT-Fe3O4 nanocomposite toward adsorptive removal of Co(II) and Pb(II) from aqueous solution in batch mode. The Fe3O4–MWCNT hybrid was prepared using a simple one-pot strategy via in situ growth of Fe3O4 magnetic nanoparticles onto the surface of the MWCNTs. The Fe3O4–MWCNT hybrid was characterized by X-ray diffractometry and Field Emission Scanning Electron Microscopy (FESEM). A Response Surface Methodology (RSM) with a Central Composite Design (CCD) was employed to evaluate the effects of solution pH, contact time, temperature, initial heavy metal concentration and adsorbent dosage on the removal efficiency of the heavy metals. Results of analysis of variance (ANOVA) showed that the initial metal concentration and absorbent dosage and their interaction effect were the most significant parameters for Co(II) ion removal. Adsorbent dosage, pH and initial metal concentration had significant influences on the removal efficiency of Pb(II) ions. The optimum pH, time, temperature, initial concentration of metals and adsorbent dosage were found to be 6.5,25 min, 40 °C, 35 mg/L, and 48.3 mg/50mL, respectively. Maximum removal of Pb(II) and Co(II) in optimum condition was 90.2 and 79.34% respectively. Results indicated that nanocomposite can be used as an effective adsorbent for effluent decontamination especially in Pb–Co bearing wastewaters. The equilibrium data were well fitted by the Langmuir model. The removal mechanism of metal ions followed adsorption and ion exchange processes.
https://ijcce.ac.ir/article_25481_e741a3f944163118e6d3cba1ecc3a9a7.pdf
Nanocomposite
Removal
Cobalt
Lead
RSM
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
143
148
10.30492/ijcce.2017.30026
30026
Total Acid Number Reduction of Naphthenic Acid Using Subcritical Methanol: A Kinetic Study
Pradip Mandal
pradipbd2002@yahoo.com
1
Huda Nasir
hudasyamilahnasir@gmail.com
2
Centre of Research in Ionic Liquids, Universiti Teknologi Petronas, 32610 Bandar Seri Iskandar, Perak, MALAYSIA
Department of Petroleum Engineering, Universiti Teknologi Petronas, 32610 Bandar Seri Iskandar, Perak, MALAYSIA
The aim of this study is to explore the capability of subcritical methanol to reduce the acidity of naphthenic acids and to determine reaction kinetics for large-scale reactor design.The experiments were carried out in a 25 mL autoclave reactor (China) at temperatures of 70-120oC, Methanol Partial Pressures (MPPs) of 0.1-1.5 MPa, and reaction times of 0-60 min. The total acid number content of the samples was analyzed using ASTM D 974 techniques. Experimental results reveal that total acid number reduction of naphthenic acids increased with increasing reaction temperature, MPP, and reaction time. Approximately 74.20% total acid number was reduced at a temperature of 120oC, a MPP of 1 MPa, and a reaction time of 60 min. Experimental data revealed that total acid number removal reaction kinetics followed second-order kinetics with an activation energy of 11.27 kcal/mol. Therefore, subcritical methanol is able to reduce the total acid number of naphthenic acids without the addition of any catalyst.
https://ijcce.ac.ir/article_30026_8d050423e5870e158315cebb1d81d12f.pdf
Naphthenic acid
Subcritical methanol
Total acid number
Petroleum oil
Reaction kinetics
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
149
161
10.30492/ijcce.2017.26471
26471
Experimental Determination of Continuous Phase Overall Mass Transfer Coefficients Case Study: Kühni Extraction Column
Mehdi Asadollahzadeh
mehdiasadollahzadeh@iust.ac.ir
1
Rezvan Torkaman
rtorkaman@aeoi.org.ir
2
Meisam Torab-Mostaedi
mmostaedi@aeoi.org.ir
3
Department of Chemical Engineering, Iran University of Science and Technology (IUST), P.O. Box 16765-163 Tehran, I.R. IRAN
Materials and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-8486 Tehran, I.R. IRAN
Materials and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O. Box 11365-8486 Tehran, I.R. IRAN
The aim of this study is to explore the capability of subcritical methanol to reduce the acidity of naphthenic acids and to determine reaction kinetics for large-scale reactor design.The experiments were carried out in a 25 mL autoclave reactor (China) at temperatures of 70-120oC, Methanol Partial Pressures (MPPs) of 0.1-1.5 MPa, and reaction times of 0-60 min. The total acid number content of the samples was analyzed using ASTM D 974 techniques. Experimental results reveal that total acid number reduction of naphthenic acids increased with increasing reaction temperature, MPP, and reaction time. Approximately 74.20% total acid number was reduced at a temperature of 120oC, a MPP of 1 MPa, and a reaction time of 60 min. Experimental data revealed that total acid number removal reaction kinetics followed second-order kinetics with an activation energy of 11.27 kcal/mol. Therefore, subcritical methanol is able to reduce the total acid number of naphthenic acids without the addition of any catalyst.
https://ijcce.ac.ir/article_26471_73b33dd0fbb7a616c8563e5ff6be32a5.pdf
Kühni Column
Overall Mass Transfer Coefficients
Mass Transfer Direction
Sherwood Number
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
163
171
10.30492/ijcce.2017.30032
30032
Optimization and Kinetic Studies of Ultrasound-Assisted Extraction on Polyphenols from Satsuma Mandarin (Citrus Unshiu Marc.) Leaves
Zeynep Ciğeroğlu
zilbay@gmail.com
1
Ş. İsmail Kırbaşlar
krbaslar@istanbul.edu.tr
2
Selin Şahin
selins@istanbul.edu.tr
3
Gökben Köprücü
koprucugokben@gmail.com
4
Istanbul University, Engineering Faculty, Department of Chemical Engineering, 34320 Avcılar, Istanbul, TURKEY
Istanbul University, Engineering Faculty, Department of Chemical Engineering, 34320 Avcılar, Istanbul, TURKEY
Istanbul University, Engineering Faculty, Department of Chemical Engineering, 34320 Avcılar, Istanbul, TURKEY
Istanbul University, Engineering Faculty, Department of Chemical Engineering, 34320 Avcılar, Istanbul, TURKEY
The present article includes the Ultrasound-Assisted Extraction (UAE) of Citrus unsiu Marc. leaves rich in polyphenols. The best possible combinations of solvent, pH of the media, solvent/solid ratio, extraction time, extraction temperature and particle size were obtained for the maximum extraction of Total Phenolic Compounds (TPC) and Total Flavonoid Compounds (TFC) by using One-Factor-at-a-Time (OFAT) approach. The optimum extraction conditions of TPC were as follows: pH 4 in water; solvent/solid ratio of 20:1; extraction time, 54 min; and extraction temperature, 53ºC. On the other hand, pH 2 in water, solvent/solid ratio of 42:1, 48 min and 58ºC were found to be the optimal conditions for the extraction of TFC. The solvent selection was the most effective parameter for the related system. Additionally, several kinetic models (Film theory, Peleg model, first-order mechanism model and second order mechanism model) were employed to examine the kinetics of UAE.
https://ijcce.ac.ir/article_30032_3f958be91f99b5b37fcb0234cae01573.pdf
Citrus unshiu Marc. leaves
Ultrasound-assisted extraction
surfactant
One-factor-at-a-time optimization
Total phenolic content
Total flavonoid content
eng
Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
Iranian Journal of Chemistry and Chemical Engineering
1021-9986
2017-10-01
36
5
173
183
10.30492/ijcce.2017.27256
27256
Numerical Investigation of Fluid Mixing in a Micro-Channel Mixer with Two Rotating Stirrers by Using the Incompressible SPH Method
Rahim Shamsoddini
shamsoddini.rahim@gmail.com
1
Department of Mechanical Engineering, Sirjan University of technology, Sirjan,, I.R. IRAN
Fluid mixing is a crucial and challenging process for microfluidic systems, which are widely used in biochemical processes. Because of their fast performance, active micromixers that use stirrer blades are considered for biological applications. In the present study, by using a robust and convenient Incompressible Smoothed Particle Hydrodynamics (ISPH) method, miscible mixing within a two-blade micromixer is investigated. The problem discussed herein is represented by an active micromixer comprising two stir-bars that rotate to mix the fluids. Because of its Lagrangian nature, Smoothed Particle Hydrodynamics is an appropriate and convenient method for simulating moving boundary problems and tracking the particles in the mixing process. Previous investigations have been carried out for mixing flow for a low Schmidt number. However, a low Schmidt number is barely applicable for liquid mixing. Hence, in the present study, the Schmidt number is considered to be Sc=1000. The present results show that the two-blade micro-channel mixer considerably improves the mixing rate in comparison with the one-blade micro-channel mixer.
https://ijcce.ac.ir/article_27256_16ae1b75b5baebc9aa80dd698746c4c6.pdf
Micromixer
SPH
Two-stirrer