Chemical engineering journal, Vol. 155 N° 3. Chemical engineering journal - Decembre 2009
| Titre : | Chemical engineering journal, Vol. 155 N° 3. Chemical engineering journal - Decembre 2009 |
| Type de document : | Bulletin |
| Paru le : | 18/04/2010 |
Dépouillements
Article : texte imprimé
Marco Tagliabue, Auteur ;
David Farrusseng, Auteur ;
Susana Valencia, Auteur
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The paper addresses current needs in Natural Gas (NG) treating. Basic principles of Pressure Swing Adsorption (PSA) separation processes are described. A state of the art of microporous adsorbents in the frame of NG treating is given. It include[...]
Article : texte imprimé
Emmanuel I. Unuabonah, Auteur ;
Gilbert U. Adie, Auteur ;
Lora O. Onah, Auteur
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Carica papaya seeds were defatted and used for the adsorption of methylene blue dye (MB dye). The pHPZC and specific surface area (SSA) of the defatted and undefatted Carica papaya seeds were found to be 6.25 and 143.27 m2 g−1 respectively. The [...]
Article : texte imprimé
This work describes the sorption of 134Cs, 60Co and 152+154Eu by crystals of unmodified and phosphoric acid modified silico-antimonates (SiSb). Equilibrium and selectivity sequence for co-exiting metal ions under strongly acidic conditions of HC[...]
Article : texte imprimé
A mathematical model is developed to describe the emission characteristics of VOCs from homogeneous wet coating materials deposited on impermeable substrates. The model considers mass transfer in the material and in air, boundary layer resistanc[...]
Article : texte imprimé
Yehya Elsayed, Auteur ;
Mykola Seredych, Auteur ;
Andrew Dallas, Auteur
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Several commercially available coconut-based activated carbons were tested as adsorbents of hydrogen sulfide (H2S) at high and low H2S concentrations. These carbons were compared to an experimental coconut-based carbon modified by impregnation w[...]
Article : texte imprimé
F. Logist, Auteur ;
P. Saucez, Auteur ;
J. Van Impe, Auteur
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Nowadays, simulations have become indispensable for the analysis and optimisation of (bio)chemical processes. However, as a lot of these processes are distributed in nature (i.e., the properties vary both in time and space), their simulation req[...]
Article : texte imprimé
Luu Thai Danh, Auteur ;
Raffaella Mammucari, Auteur ;
Paul Truong, Auteur
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Three operating parameters of supercritical carbon dioxide extraction (SCE) have been optimized by a response surface method using central composite design to obtain high yields of essential oil from roots of Vetiveria zizanioides. Analyses by [...]
Article : texte imprimé
Tatiana Calvete, Auteur ;
Eder C. Lima, Auteur ;
Natali F. Cardoso, Auteur
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Activated (AC-PW) and non-activated (C-PW) carbonaceous materials were prepared from the Brazilian pine-fruit-shell (Araucaria angustifolia) and tested as adsorbents for the removal of Procion Red MX 3B dye (PR-3B) from aqueous effluents. The ac[...]
Article : texte imprimé
Daphne Hermosilla, Auteur ;
Manuel Cortijo, Auteur ;
C.P. Huang, Auteur
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The role of iron on the degradation of different organic compounds, differing in their structure (aliphatic versus aromatic) and iron complex formation capacity, by conventional and photo-Fenton processes was investigated. Results show that thes[...]
Article : texte imprimé
Abbas H. Sulaymon, Auteur ;
Balasim A. Abid, Auteur ;
Jenan A. Al-Najar, Auteur
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The adsorption of lead, copper, chromium and cobalt ions onto granular activated carbon (DARCO 20–40 mesh) in a single component system has been studied using fixed-bed adsorbers. A film-pore diffusion model has been utilized to predict the fixe[...]
Article : texte imprimé
Zhaobing Guo, Auteur ;
Shourong Zheng, Auteur ;
Zheng Zheng, Auteur
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Silicalite-1 zeolite was used for selective adsorption and separation of p-chloronitrobenzene (p-CNB) and o-chloronitrobenzene (o-CNB). Maximum adsorption amounts of p-CNB in the zeolite are found to be approximately 4 molecules per unit cell (m[...]
Article : texte imprimé
E. Pipelzadeh, Auteur ;
A. A. Babaluo, Auteur ;
M. Haghighi, Auteur
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Titanium dioxide nanoparticles were modified using a sacrificial organic acid carrier at low pH values where the zeta potential of the TiO2 nanoparticles was found to be highly effective forming 0.05, 0.1, 0.5 wt.% Ag/TiO2 nanocomposites. The o[...]
Article : texte imprimé
Kondapalli Srividya, Auteur ;
Kaustubha Mohanty, Auteur
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In this work the potential of Catla catla scales to remove Cr(VI) ions from aqueous solutions was investigated as a function of time, initial Cr(VI) concentration, initial pH, biomass dose and agitation speed. Optimum biosorption conditions were[...]
Article : texte imprimé
S. Dutta, Auteur ;
S.A. Parsons, Auteur ;
C. Bhattacharjee, Auteur
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Recycling and reuse of wastewater after purification will reduce the environmental pollution as well as fulfill the increasing demand of water. Adsorption-based water treatment process is very popular for dye-house wastewater treatment. The pres[...]
Article : texte imprimé
Jian-Hui Sun, Auteur ;
Shao-Hui Shi, Auteur ;
Yi-Fan Lee, Auteur
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In this paper, the application of Fenton oxidation process for the decolorization of an azo dye Direct Blue 15 (DB15) in aqueous solution was investigated. The effect of initial pH, dosage of H2O2, H2O2/Fe2+ and H2O2/dye ratios and the reaction [...]
Article : texte imprimé
Sermin Gül, Auteur ;
Ozlem Ozcan-Yildirim, Auteur
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Reactive Red 194 (RR194), Reactive Yellow 145 (RY145) azo dyes and synthetic textile dye-bath effluent were treated with O3 and H2O2/UV-C processes. The operating parameters such as dye concentration, hydrogen peroxide concentration and pH value[...]
Article : texte imprimé
Ysrael Marrero Vera, Auteur ;
Roberto José De Carvalho, Auteur ;
Mauricio Leonardo Torem, Auteur
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A study on the evaluation of the effectiveness of atrazine degradation by in situ electrochemically generated ozone was conducted. Ti/β-PbO2 electrodes were used as anodes for the ozone production. The rate of ozone generation, the ozone saturat[...]
Article : texte imprimé
R.O. Abdel Rahman, Auteur ;
A.A. Zaki, Auteur
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In this work, the effort is directed to assess the feasibility of immobilizing the ash produced from the incineration of solid radioactive wastes. Within this context, the ash was characterized to determine its chemical composition and physical [...]
Article : texte imprimé
Ying An, Auteur ;
Zhiwei Wang, Auteur ;
Zhichao Wu, Auteur
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Membrane foulants were systematically characterized in an anaerobic membrane bioreactor (AnMBR), in which non-woven fabric was used as the membrane material. In this study, three-dimensional excitation-emission matrix (EEM) fluorescence spectros[...]
Article : texte imprimé
Manassis G. Mitrakas, Auteur ;
Paul Chr. Panteliadis, Auteur ;
Vissarion Z. Keramidas, Auteur
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Equations describing quantitatively the relation between Fe3+ dose and residual arsenic concentration, Ce, at pH values ranging between 6 and 8 and various initial arsenic concentrations, Co, were established using a natural water spiked with A[...]
Article : texte imprimé
Jianhan Huang, Auteur ;
Xianguang Wang, Auteur ;
Kelong Huang, Auteur
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Phenolic hydroxyl groups modified hyper-cross-linked polymeric adsorbent HJ-02 was prepared and it was applied to remove p-nitroaniline in aqueous solution as compared with Amberlite XAD-4. The results indicated that the adsorption at the soluti[...]
Article : texte imprimé
Lidiana D. Barreira, Auteur ;
Patrícia F. Lito, Auteur ;
Bruno M. Antunes, Auteur
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Cadmium is one of the most toxic contaminants of superficial waters, whose effects are particularly harmful to human health. In 20 years the European Union will impose total elimination of cadmium from industrial discharges. Such facts induce re[...]
Article : texte imprimé
Natalia Widjojo, Auteur ;
Tai-Shung Chung, Auteur
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A novel copoly(4,4′-diphenyleneoxide/1,5-napthalene-2,2′-bis (3,4-dicarboxyl phenyl) hexa fluoro propane diimide) 6FDA-ODA-NDA/Ultem® 1010 dual-layer hollow fiber membrane for pervaporation dehydration has been fabricated via co-extrusion proce[...]
Article : texte imprimé
Chih-Chung Mao, Auteur ;
Hung-Shan Weng, Auteur
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The photocatalytic activity and the promoting effect of titania (TiO2) incorporated with carbon black (CB) for removing the pollutant in wastewater were investigated. The TiO2/CB composite photocatalysts with various ratios of TiO2 to CB were pr[...]
Article : texte imprimé
Tsao-Jen Lin, Auteur ;
Gen-Ming Lin, Auteur
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The coalescing mechanism of in-line two-unequal bubbles rising in a bubble column with a non-Newtonian fluid has been experimentally studied. The non-Newtonian fluid is the 1.5 wt% polyacryamide in demineralized water and the bubble gas is air. [...]
Article : texte imprimé
F. Mohammadi, Auteur ;
S. N. Ashrafizadeh, Auteur ;
A. Sattari, Auteur
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The effects of various process parameters on the cell voltage and chlorine current efficiency (CCE) in a Half-MEA (Nafion® 115 membrane-Loading: 0.4 mg Pt/cm2) oxygen reducing membrane electrolysis cell employing a dimensionally stable anode (DS[...]
Article : texte imprimé
Lizhang Wang, Auteur ;
N. Balasubramanian, Auteur
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Electrochemical regeneration of granular activated carbon (GAC) saturated with organic compounds was investigated using SnO2/Ti anodes. Experiments were carried out under a semi-batch electrochemical reactor covering wide range in operating cond[...]
Article : texte imprimé
Fenglian Fu, Auteur ;
Qi Wang, Auteur ;
Bing Tang, Auteur
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It is difficult to remove Ni(II) from NiEDTA wastewater by many conventional processes. A new method for removing Ni(II) from NiEDTA wastewater by Fenton and Fenton-like reaction followed by hydroxide precipitation presents an important breakthr[...]
Article : texte imprimé
François Renault, Auteur ;
Bertrand Sancey, Auteur ;
Jérémie Charles, Auteur
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Flocculation is a common secondary treatment procedure for the removal of suspended solids, colloids and organic matter present in industrial wastewater. In the present study, the flocculation of cardboard industry wastewater, treated by a biolo[...]
Article : texte imprimé
Extraction equilibria of propionic acid from aqueous solutions by Amberlite LA-2 in diluent solvents
Yavuz Selim Asci, Auteur ;
Ismail Inci, Auteur
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Amberlite LA-2 (a secondary amine) was studied for its ability to extract propionic acid at different amine concentrations. The extraction of propionic acid by Amberlite LA-2 dissolved in seven single solvents (cyclohexane, 2-octanone, toluene, [...]
Article : texte imprimé
A no-moving-part microfluidic oscillator was developed for mixing two reactants prior to their admission into a microreactor. Instead of the spatial periodicity produced by static mixers, it achieves essentially the same resultant effect by temp[...]
Article : texte imprimé
Jing Ma, Auteur ;
Minhua Zhang, Auteur ;
Lianyu Lu, Auteur
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Esterification assisted by pervaporation separation can enhance the yield of ester for thermodynamically or kinetically limited reaction via selective removal of water from the reaction mixture. In the present study, organic–inorganic hybrid mem[...]
Article : texte imprimé
Parikshit Gogoi, Auteur ;
Swapnali Hazarika, Auteur ;
Narendra N. Dutta, Auteur
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The Trametes versicolor laccase catalysed the synthesis of poly(allylamine) catechin conjugate by conjugation of catechin with poly(allylamine) was studied in 11 different solvents in order to deduce the solvent effect through an attempt to corr[...]
Article : texte imprimé
André L. Alberton, Auteur ;
Marcio Schwaab, Auteur ;
Martin Schmal, Auteur
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The proper characterization of the experimental errors is essential for the correct evaluation of estimated model parameters, model fit and model predictions based on kinetic rate expressions. However, it is common to ignore the influence of exp[...]
Article : texte imprimé
Kenneth Wong, Auteur ;
Qinghua Zeng, Auteur ;
Aibing Yu, Auteur
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The molecular adsorption and CO oxidation on a gold-deposited TiO2 catalyst were investigated by means of molecular dynamics simulation. The results indicate that the molecules (i.e., O2, CO, and H2O) are selectively adsorbed on the specific lo[...]
Article : texte imprimé
Shu-Ying Ye, Auteur ;
Satoshi Hamakawa, Auteur ;
Shuji Tanaka, Auteur
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We have developed an MEMS-based Pd membrane microreactor for one-step conversion of benzene to phenol, and also evaluated the H2 permeation characteristics through the Pd membrane before the benzene hydroxylation experiments. The conversion of b[...]
Article : texte imprimé
M. Barkhordari Yazdi, Auteur ;
M.R. Jahed-Motlagh, Auteur
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The problem of controller synthesis with the objective of stabilizing a continuous stirred tank reactor (CSTR) with arbitrary switching between two modes, is considered. First, based on the new concept of modal state feedback linearization, two [...]
Article : texte imprimé
Chunhua Xiong, Auteur ;
Caiping Yao, Auteur
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Polystyrene-triethylenetetramine resin (PS-TETA) was synthesized from chloromethylated polystyrene (PS-Cl) and triethylenetetramine (TETA) and employed as a new adsorbent for heavy metal removal from aqueous solutions. The effects of reaction p[...]
Article : texte imprimé
N.D. Ingale, Auteur ;
I. B. Chatterjee, Auteur ;
J.B. Joshi, Auteur
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The stringent statutory regulation for clean environment makes the absorber and the bleacher in the nitric acid plant two very important equipments. The NOx finally released to the atmosphere from the absorber, is based on the mathematical calcu[...]
Article : texte imprimé
M. Komorowska, Auteur ;
G.D. Stefanidis, Auteur ;
T. Van Gerven, Auteur
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The paper focuses on selective microwave heating and its influence on a polyesterification process. As a model reaction, the polyesterification reaction of adipic acid with neopentyl glycol is investigated. Non-catalyzed and tin (II) chloride [...]
Article : texte imprimé
V. Nikulshina, Auteur ;
A. Steinfeld, Auteur
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A two-step thermochemical cyclic process to capture CO2 from atmospheric air via consecutive CaO-carbonation CaCO3-calcination reactions is investigated using concentrated solar energy. A kinetic analysis of the carbonation of CaO with dry and m[...]
Article : texte imprimé
Nongnuch Rueangjitt, Auteur ;
Thammanoon Sreethawong, Auteur ;
Sumaeth Chavadej, Auteur
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A new design of a microsized gliding arc discharge reactor was preliminarily investigated for the reforming of methane to various useful products. In methane reforming by the gliding arc (GA) microreactor under ambient conditions, hydrogen and a[...]
Article : texte imprimé
Sailong Xu, Auteur ;
Zhanrui Chen, Auteur ;
Bowen Zhang, Auteur
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CaAl-layered double hydroxide (CaAl-LDH), one of anionic functional layered materials, has recently been proposed as potential concrete hardening accelerators. Previous laboratory synthesis shows the necessity of employing a protective nitrogen [...]
Article : texte imprimé
Rashmi Sanghi, Auteur ;
Preeti Verma, Auteur
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A novel “green” route to prepare CdS nanoparticles under ambient conditions is reported. The long-term studies were carried out with immobilized fungus Coriolus versicolor in continuous column mode. The immobilized fungus served a dual purpose[...]
Article : texte imprimé
Boli Ni, Auteur ;
Mingzhu Liu, Auteur ;
Shaoyu Lü, Auteur
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The aim of this study was to prepare a double-coated, slow-release, and water-retention urea fertilizer (DSWU) to reduce environment pollution derived from excessive nitrogen fertilizer use. Ethylcellulose (EC) and crosslinked poly(acrylic acid-[...]
Article : texte imprimé
Ahmet Sari, Auteur ;
Ali Karaipekli, Auteur ;
Cemil Alkan, Auteur
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This paper mainly includes the preparation of a novel form-stable composite phase change material (PCM) by incorporation of lauric acid (LA) within the expanded perlite (EP), characterization of the composite by SEM and FT-IR techniques and dete[...]
Article : texte imprimé
Imberger, Jörg, Auteur ;
Rafael Libanori, Auteur ;
Mario L. Moreira, Auteur
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Strontium stannate (SrSnO3) nanostructures were obtained by microwave-assisted calcination of a SrSn(OH)6 precursor powder. Compared to other conventional calcination methods mentioned in the literature, this procedure led to a remarkable decrea[...]
Article : texte imprimé
Periyayya Uthirakumar, Auteur ;
Hyung Gu Kim, Auteur ;
Chang-Hee Hong, Auteur
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A simple solution method has been proposed that deals the specific impacts of solvent characteristics on the growth of zinc oxide (ZnO) nanoparticles. The aggregation of particles is a major drawback in the hydrothermal method, and it is suppres[...]
Article : texte imprimé
Zeid A. Alothman, Auteur ;
Allen W. Apblett, Auteur
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Functionalized hexagonal mesoporous silicas were prepared by chemical modifcation of a surfactant free mesoporous silica (OSU-6-W) with 3-glycidoxypropyltrimethoxysilane. Different degrees of derivitization with 3-glycidoxypropyl were realized [...]
Article : texte imprimé
Zhenfeng Zhu, Auteur ;
Hui Liu, Auteur ;
Hongjun Sun, Auteur
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The alumina microfibers with mesoporous structure were synthesized by a facile hydrothermal and thermal decomposition route. The as-obtained products were well characterized by XRD, SEM, TEM (HRTEM), SAED and N2 adsorption–desorption measuremen[...]
Article : texte imprimé
Vicente Jiménez, Auteur ;
José Antonio Díaz, Auteur ;
Paula Sánchez, Auteur
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The influence of different activation conditions, including activating agent/CNFs mass ratio, activation temperature, activation time and He flow rate, on the pore structure development of herringbone carbon nanofibers (CNFs) has been studied. A[...]
Article : texte imprimé
Maria B. Fernàndez, Auteur ;
Jhon F. Sánchez M., Auteur ;
Tonetto, Gabriela M., Auteur
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Six palladium catalysts were prepared using different precursors (palladium acetylacetonate, palladium nitrate and tetraamminepalladium nitrate) and supports (α-Al2O3, γ-Al2O3, ZSM-5, and MCM-22). The samples were characterized by atomic absorp[...]
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