Showing papers in "Chemical Engineering Journal in 2009"

TL;DR: In this article, the intraparticle diffusion model (IPD) was applied for the analysis of adsorption kinetics, and the characteristic curves based on this model were plotted with various initial adsorization factors (Ri).

TL;DR: The comparison demonstrates that using an integrated bioreactor with stacked configuration in treating high strength industrial wastewaters is advantageous due to minimal space requirements, low capital cost and excellent COD removal efficiencies.

TL;DR: In this article, the adsorption capability of clay minerals of bentonite, kaolin, and zeolite to remove Congo red from aqueous solution was evaluated using pseudo-first order and second order kinetic equations, and Freundlich and Langmuir models.

TL;DR: In this article, a review of the effect of a variety of conditions on TiO2-photocatalysed decoloration of dyes, such as amount of catalyst, reaction pH, light intensity, concentration of organic dye, and the presence of additives such as ions, is presented.

TL;DR: In this paper, the approach equilibrium parameter of Elovich equation (R E ) was used to describe the characteristic curves of adsorption kinetics and the mean deviation obtained from the three kinetic models revealed that Elovich equations was the most suitable one.

TL;DR: In the past decades, polymeric adsorbents have been emerging as highly effective alternatives to activated carbons for pollutants removal and subsequent recovery from industrial effluents as discussed by the authors, which opened up the new opportunities of their application in deep removal of inorganic pollutants from waters.

TL;DR: In this paper, the application for the removal of Ni, Cd, and Pb(II) ions from aqueous solution by using mesoporous silica materials was investigated.

TL;DR: In this paper, the feasibility of using waste iron hydroxide-eggshell as an adsorbent for the removal of phosphate under different experimental conditions was explored and the results showed that the sorption capacity increases with an increase in solution temperature from 20 to 45 C at the initial phosphate solution concentration.

TL;DR: In this paper, a low-cost adsorbent is developed from the naturally and abundantly available sawdust which is biodegradable, and the maximum adsorption of Cr(VI) on sawdust is obtained at an initial pH value of 1.

TL;DR: In this article, the adsorption of Cu(II) ions from aqueous solutions by hazelnut shell activated carbon (HSAC) was studied in a batch adaption system.

TL;DR: In this article, a state of the art of microporous adsorbents in the frame of NG treating is given, including reference and advanced zeolites, carbon based materials and Metal-Organic Frameworks (MOFs).

TL;DR: In this paper, the adsorption of lead(II) was studied on activated carbon prepared from Tamarind wood with zinc chloride activation and the experimental data were analyzed by the Freundlich isotherm and the Langmuir is-otherm.

TL;DR: In this paper, the effect of contact time at different temperatures and initial concentration were fitted to pseudo-second-order kinetic model to obtain the relative parameters, and error analysis was conducted to find whether linear method or nonlinear method was better to predict the experimental results.

TL;DR: In this paper, surface response methodology was involved in the optimization of Cr(VI) adsorption upon chitosan flakes against the process parameters pH, adsorbent dose and initial Cr (VI) concentration.

TL;DR: In this paper, the equilibrium, thermodynamics and kinetics of the biosorption of Pb(II) and Cd(II), onto (Lactarius scrobiculatus) macrofungus from aqueous solution were investigated at different experimental conditions.

TL;DR: In this paper, an approaching equilibrium factor (Rw) was defined and deduced from the pseudo-second-order (PSO) model in liquid-phase adsorption systems.

TL;DR: In this article, surface-initiated-atom transfer radical polymerization (SI-ATRP) was used on a cross-linked acrylate-based resin resin for grafted poly(glycidylmethacrylate) polymers.

TL;DR: In this paper, the adsorption of chromium(VI) was studied on activated carbon prepared from Tamarind wood with zinc chloride activation, and the experimental data were analyzed by the Freundlich isotherm and the Langmuir is otherm.

TL;DR: In this paper, the authors present an overview of different techniques to understand the cavitational activity distribution in the reactor, highlighting the basic aspects, its applicability and relative merits/demerits.

TL;DR: In this article, the research progress in the field of dissolution, regeneration and derivatization of cellulose with RTILs is reviewed and the perspective of RTIL application in cellulose industry is also discussed.

TL;DR: In this article, the degradation rates of phenol in the MFC increased about 15% as compared to the open-circuit control, and the maximal power densities were 9.1 and 28.3 W/m3 for MFCs using phenol and glucose-phenol mixture as the fuel, respectively.

TL;DR: In this article, nanocapsules used as phase change material (PCM) were prepared by using in situ polymerization methods using N -Tetradecane as the core material.

TL;DR: In this paper, a batch system using dead biomass of marine Aspergillus niger for the sorption of Cr(VI) was carried out, and the experimental data were analyzed using five, two-parameter isotherms (Langmuir, Freundlich, Dubinin-Radushkevich, Temkin and Halsey).

TL;DR: In this paper, a kinetic and thermodynamic study of the adsorption of azo-dye Orange II from aqueous solutions onto titania aerogels was performed.

TL;DR: A composite adsorbent, iron oxide coated zeolite (IOCZ), was characterized and employed for the removal of Cu(II) from aqueous solution using fixed bed column.

TL;DR: In this paper, a cancrinite-type zeolite (ZFA) was synthesized from Class C fly ash via the molten-salt method and the maximum exchange level (MEL) was found that the uptake of heavy metals on ZFA was subjected to an ion exchange mechanism.

TL;DR: In this paper, the ability of saw dust and neem bark as low-cost natural adsorbents was investigated for adsorptive removal of Zn(II) and Cd(II)- ions from aqueous solutions.

TL;DR: In this article, the biosorption of copper (II) ions from aqueous solution by an unconventional adsorbent maple wood sawdust was studied as a function of different environmental parameters such as pH, contact time, adsorent concentration, initial Cu(II) ion concentration and others.

TL;DR: In this paper, the catalytic ozonation of RR198 solution in the presence of MgO nanocrystal catalysts was investigated in a laboratory scale batch reactor, and the effects of solution pH (2-12), reaction time, Mg O dosage (1-6g/L), and initial dye concentration (100-500mg/L) on color and COD removal were evaluated.

TL;DR: In this article, mixed lanthanum/aluminum pillared clays (LaAl-PILC) were investigated for their ability to remove phosphate from water using XRD characterization.