Showing papers in "Chemical Engineering Journal in 2014"

TL;DR: In this article, the principles of electrical plasma with liquids for pollutant removal and the reactors of various electrical discharge types are outlined in this review, and detailed discussions are given of the effects of various factors on the performance of pulsed electrical plasma technology in water treatment processes.

TL;DR: In this paper, the authors give an overview of the recent design concepts of IPN hydrogels and their applications in controlled drug delivery, and separation processes, and a special concern is given to the macroporous IPN composite cryogels, which are very attractive materials for separation processes being endowed with a high reusability.

TL;DR: In this paper, the authors reviewed the various wastes amenable to VFA production, the pertinent factors influencing the VFO production, and the various applications of the resulting VFA.

TL;DR: In this article, the effect of temperature, production method, and feedstock type on physicochemical and biological properties of biochars and hydrochars was explored, and the results showed that feedstock types could also influence characteristics of the bio-chars.

TL;DR: In this paper, a review of the preparation methods and various properties of graphene oxide is presented, followed by a discussion on the working parameters of the two different electrochemical routes and the associated electrochemical techniques used to produce graphene.

TL;DR: Magnetic oak wood biochar (MOWBC) and magnetic oak bark (MOBBC) were obtained from oak wood and oak bark biochars made by fast pyrolysis during bio-oil production as discussed by the authors.

TL;DR: In this article, the degradation of atrazine was investigated under UV-254nm irradiation, alone or in combination with peroxides, i.e., hydrogen peroxide, persulfate (PS) or peroxymonosulfates (PMS).

TL;DR: In this paper, a silica-coated Fe3O4@SiO2-AO was applied to adsorb U(VI) from aqueous solutions.

TL;DR: A nano-composite cation exchanger sodium dodecyl sulfate acrylamide Zr(IV) selenite (SDS-AZS) was developed by sol-gel method.

TL;DR: In this article, polysulfone (PSf)-titanium dioxide (TiO2) nanocomposite substrates were prepared by incorporating different amounts of TiO2 nanoparticles (ranging from zero to 1.5%) into PSf matrix.

TL;DR: In this article, a Fenton-like catalyst for hydroxyl radicals (OH) was used as a composite oxide of Cu and Fe elements, which showed much stronger catalytic ability toward the activation of H2O2 than Cu2O and Fe3O4 nanoparticles.

TL;DR: The feasibility of using thermally activated persulfate (TAP) to degrade chloramphenicol (CAP) in aqueous solution was evaluated in this paper, and the observed rate constants well fitted the Arrhenius equation.

TL;DR: In this article, modified Ball Clay and chitosan composite (MBC-CH) was prepared and its application for methylene blue (MB) adsorption from aqueous solution in an industrial prototype fixed-bed column adaption was investigated.

TL;DR: In this paper, promising inorganic and ligand immobilized conjugate materials for selective and high capacity of radioactive cesium removal from radioactive liquid waste in Fukushima after an accident at Daiichi Nuclear Power Plant hit by the Great East Japan Earthquake and tsunami on 11 March 2011.

TL;DR: In this paper, an amino-functionalized magnetic cellulose composite was prepared by a process involving: (1) synthesis of magnetic silica nanoparticles using the co-precipitation method followed by the hydrolysis of sodium silicate, (2) coating with cellulose through the regeneration of cellulose dissolved in 7 wt% NaOH/12 wt%) urea aqueous solvent, grafting of glycidyl methacrylate using cerium initiated polymerization and (4) ring-opening reaction of epoxy groups with ethylenediamine

TL;DR: In this paper, the degradation of sulfamethoxazole (SMX) in a microwave-activated persulfate (MW/PS) system was evaluated, and the results indicated that MW/PS degradation of SMX followed pseudo-first-order kinetics, and compared with conventional heating, microwave heating has a special effect on SMX degradation with higher reaction rate and shorter process time.

TL;DR: In this article, a novel approach to fabricate covalently functionalized graphene oxide (fGO)/polypropylene (PP) nanocomposites has been reported, which achieves good dispersion with exfoliated and intercalated nanostructure and strong interfacial adhesion in PP.

TL;DR: In this paper, the authors used the pseudo second-order model for describing the kinetic data and fitted the Freundlich and Redlich-Peterson isotherms to the equilibrium data.

TL;DR: In this article, the mesoporous adsorbent was successfully prepared by 6-((2-hydroxy-1-naphthoyl)hydrazono)methyl)benzoic acid (HMBA) embedded onto mesophorous silica monoliths.

TL;DR: In this article, ubiquitous rice husk biochar was modified by methanol to improve TC adsorption capacities and reduce the inherent organic compound content in the biochar, and the modified biochar showed approximately 45.6% enhancement of adsorptive capacity in 12h and 17.2% in equilibrium time compared with Ori-char.

TL;DR: In this article, a comprehensive review on the use of magnetic nanoparticles (MNPs) in the treatment of polluted wastewaters with toxic metals and dyes is presented, in which the magnetic recovery options and the possible strategies that can be employed for the nanomaterials regeneration and reuse are analyzed.

TL;DR: In this article, a facile preparation and characterization of a range of chitosan-alkali lignin composites for the removal of harmful effluents present in wastewater was reported.

TL;DR: In this article, a novel engineered biochar with clay particles distributed on carbon surfaces within the biochar matrix has been successfully developed as a low-cost adsorbent for environmental applications.

TL;DR: Montmorillonite-supported nanoscale zero-valent iron (Mt-nZVI) has been synthesized to remove inorganic arsenic (As) from aqueous solutions.

TL;DR: In this article, the authors synthesize a composite of Cu2O/BiVO4 nanoparticles for the simultaneous oxidation of organic dyes and reduction of Cr(VI) in neutral media.

TL;DR: In this article, the adsorption of phosphate from water by two lanthanum hydroxides (LHs), a commercial LH and a synthesized LH from waste alkaline solution, was investigated.

TL;DR: In this article, a series of partially hydrolyzed polyacrylamide/cellulose nanocrystal (HPAM/CNC) nanocomposite hydrogels with various amounts of CNCs were used to remove methylene blue (MB) dye from an aqueous solution.

TL;DR: In this article, a series of batch adsorption experiments were conducted to study the effect of pH, dose of adsorbent, metal concentration and temperature on Hg(II) uptake by the functionalized MWCNTs.

TL;DR: In this article, the formation of hierarchical nanostructures of nest-like Ni3S2 grown on Ni foam by a one pot hydrothermal route and used it as a binder free electrode for high performance supercapacitors was demonstrated.

TL;DR: In this article, the authors assessed the adsorption of CO2 onto biochar, a low-cost adsorbent that can be produced from waste biomass through low-temperature pyrolysis.