Showing papers in "Separation and Purification Technology in 2012"

TL;DR: In this paper, the use of ferrites in photocatalytic conversion of visible solar energy to generate e − /h +, which in turn produce reactive oxygen species through redox processes, for the degradation of the contaminants.

TL;DR: In this article, a polyamide (PA) nanocomposite membrane containing alumina nanoparticles synthesized via in situ interfacial polymerization was presented, which improved the permeate flux and maintained the salt rejection.

TL;DR: In this paper, the authors analyzed the properties of ionic parameters to explain the ability of some ions to permeate by rearranging the water molecules within their hydration shells during transport as well as near membrane inter-ionic interactions.

TL;DR: In this article, the effect of embedding TiO2-coated multiwalled carbon nanotubes (MWCNTs) in PES matrix on membrane morphology, properties and antibiofouling was presented and the obtained results were compared with the prepared oxidized MWCNTs and TiO 2 blended PES membranes.

TL;DR: In this article, the authors proposed novel distillation technologies for enhanced bioethanol dehydration, by extending the use of dividing-wall columns (DWC) to energy efficient extractive distillation (ED) and azeotropic distillation(AD).

TL;DR: In this article, the performance of three different adsorbents prepared by functionalization of commercial silica gel (NH2-SG), silica nano hollow sphere (Ni2+ and Pb2+), and a non functionalized silica nanophase (SNHS) have been compared.

TL;DR: In this article, the removal of tetracycline by magnetite (Fe3O4) activated peroxydisulfate (Na2S2O8) in the presence of ultrasound irradiation has been performed.

TL;DR: In this paper, the influence of various parameters (time and temperature of extraction, solvent composition, solid-solvent ratio, particle size, and ultrasonic irradiations) on the extraction kinetics and yields was evaluated.

TL;DR: In this article, the effect of room temperature ionic liquid on the microstructure, properties and performance of elastomeric block co-polyamide membranes was discussed, based on the 1- n -alkyl-3-methylimidazolium cation.

TL;DR: In this paper, the authors provide an overview of the current NPS pollution modelling technology in China and compared several methods used for estimation of the NPS load in China. But they found that most of these methods are derived directly from models developed by several developed countries, especially the USA, and they may not be suitable to the actual situation of China.

TL;DR: In this paper, a hybrid photocatalyst composed of graphite-like carbon nitride (g-C 3 N 4, mainly response to visible light) and TiO 2 (response to UV light) was fabricated by a hydrolysis approach.

TL;DR: In this article, the performance of batch electrocoagulation (EC) using iron electrodes with monopolar configuration for simultaneous removal of copper (Cu), nickel (Ni), zinc (Zn), and manganese (Mn) from a model wastewater was investigated.

TL;DR: A review of the literature concerning treatment of microcystins in water by conventional and advanced oxidation processes is presented in this paper, in terms of the degree of degradation, reaction kinetics, identity and toxicity of oxidation by-products and possible degradation pathways.

TL;DR: In this paper, ZnO nanoparticles were blended into polysulfone (PSf) membranes to improve its properties in reduction of fouling by oleic acid.

TL;DR: In this article, a planning analysis of implementing low impact development (LID) type of stormwater best management practices (BMPs) for urban runoff control is presented, where the Beijing Olympic Village (BOV) residential area in China was used as a case study.

TL;DR: In this paper, amino functionalized multi-walled carbon nanotubes (MWCNT-NH2) were synthesized from raw MWCNTs and utilized to prepare novel chitosan/PVA thin adsorptive membranes for copper ion removal from water.

TL;DR: In this paper, the AgBr loaded ZnO (AgBr-ZnO) was successfully synthesized by simultaneous precipitation of zinc oxalate and AgBr and calcination of the mixed precipitate at 400°C for 12h.

TL;DR: In this paper, the removal of phenol by heterogenous photo electro Fenton-like (PEF-like) system using nano-zero valent iron (NZVI) was characterized using X-ray diffraction and Scanning Electron Microscope (SEM) analysis.

TL;DR: In this article, a central composite design (CCD) and response surface methodology (RSM) were used to optimize experimental conditions for extraction of polyphenol and antioxidants from pomegranate peel using ethanol-water mixture as a food grade solvent.

TL;DR: In this paper, an extractive dividing-wall column (E-DWC) was proposed to concentrate and dehydrate bioethanol in a single step, by integrating all units of the conventional sequence into only one distillation column.

TL;DR: In this article, the relative importance of selectivity and capacity on pressure swing adsorption performance was investigated for post-combustion CO2 capture from a CO2/N2 mixture.

TL;DR: It is proved that selectrodialysis is feasible and effective for chloride/sulphate fractionation and can reach over 85% with the current efficiency of over 50%.

TL;DR: In this paper, the degradation of methyl parathion has been investigated using hydrodynamic cavitation reactors with possible intensification studies using different approaches, and the effect of different parameters like operating pressures (1-8 bar), operating temperatures (sets of intense cooling, moderate cooling and uncontrolled operation) and initial pH (2.2-8.2) has been evaluated initially.

TL;DR: In this paper, the effects of feed solution pH and membrane orientation on water flux and the rejection of carbamazepine and sulfamethoxazole were investigated using a bench scale forward osmosis (FO) system.

TL;DR: In this article, the efficiency of hydrophobic ionic liquids, namely phosphonium-based, to extract three short-chain organic acids (l -lactic, l -malic, and succinic acids) from dilute aqueous solutions, as model systems for the use of ionic liquid to extract bioproducts from fermentation broths.

TL;DR: A comprehensive analysis of the existing data reveals significant variations in the rejection of N-nitrosodimethylamine (NDMA) by RO membranes reported in the literature, ranging from negligible up to 86.

TL;DR: Chlorine dose had a substantial impact on the concentration and characteristics of DOM, and accordingly on the optimum dosage range of alum for effective coagulation of algae cells, which indicated the significance of dissolved organic matter (DOM) in the removal of algae.

TL;DR: In this paper, the equilibrium and kinetics of sorption of generic vegetable cooking oil, motor oil, and crude oil from the liquid phase and from an oil-in-water emulsion on two different (0.7-1.2mm and 1.35mm size range) particulate hydrophobic silica aerogel (Cabot Nanogel®).

TL;DR: In this article, the physicochemical properties of the synthesized Zn/Cr-CO3 LDH, prepared by co-precipitation method at constant pH, were determined by several techniques such as powder X-ray diffraction (PXRD), Fourier Transform Infrared (FT-IR), thermo gravimetric/differential thermal analysis (TG/DTA), BET surface area, scanning electronic microscope (SEM), transmission electron microscope (TEM) and optical absorption spectra.

TL;DR: In this paper, a commercial reverse osmosis (RO) membrane via layer-by-layer (LbL) assembly has been used to reduce membrane fouling of RO membrane and the obtained membranes exhibited antifouling properties against various hydrophobic foulants.