Showing papers in "Colloids and Surfaces A: Physicochemical and Engineering Aspects in 2016"

TL;DR: In this paper, the use of activated carbons after pyrolysis of waste potato peels for the removal of cobalt ions from synthetic wastewaters (composed of various Co(II) concentrations in distilled water which adjusted previously at different pH values) without any coexisting ions was investigated.

TL;DR: In this article, the effect of the potential-determining ions (PDI) Ca, Mg and SO4, and the total ionic strength controlled by NaCl concentration, is investigated over the range typical of natural brines.

TL;DR: In this paper, a silica-cellulose aerogel was successfully developed from recycled cellulose fibres and methoxytrimethylsilane (MTMS) silica precursor for the first time.

TL;DR: In this paper, a super-hydrophobic coating with mechanical stability and corrosion resistance was obtained by using spray-coating method, which combined micro-scale roughness with low surface energy to create a durable hierarchical structure with critical transition pressure of 570Pa.

TL;DR: In this paper, the ability of removal of Rhodamine B (RhB) and Methylene blue (MB) from aqueous solution was examined, and the results indicated that the equilibrium data were perfectly represented by the Langmuir isotherm.

TL;DR: In this paper, a facile approach to prepare cellulose/titanium dioxide/polyaniline (cellulose/TiO2/PANI) composite nanofibers that involves P-N heterojunctions at the interface of p-type PANI and n-type TiO2 was reported.

TL;DR: The hydrophobic mechanism of 3-hexyl-4-amino-1, 2, 4-triazole-5-thione (HATT) to malachite (Cu2CO3(OH)2) was investigated by contact angle, micro-flotation, zeta potential, Fourier transform infrared (FTIR) spectroscopy, time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectra (XPS) as mentioned in this paper.

TL;DR: In this article, the zeta potential of cellulose nanocrystal (CNC) aqueous dispersions was studied as a function of solution conditions, including changing pH and different electrolyte identities and concentrations.

TL;DR: In this paper, the removal of both cationic dye (malachite green, called MG for short) and anionic dyes (acid fuchsin and Congo red, called AF and CR) by ZnO nanoparticles from aqueous solution was investigated.

TL;DR: In this paper, an activated carbon was prepared by chemical activation of the sludge collected from tannery wastewater treatment plant (TWTP) using microwave heating, and the carbonized material was refluxed with a 6.0 m−L−1 HCl to obtain the activated carbon (AMWCTS), characterized by SEM, FTIR, TGA, XRD, BET and BJH analytical techniques.

TL;DR: In this article, the relationship between Flocculation Index (FI) and reactive dyes removal was discussed with controlled experiments using intelligent Particle Dispersion Analyzer (iPDA).

TL;DR: In this paper, the effect of surface roughness and shape factor on behavior of spherical glass beads in flotation has been investigated, and it is shown that increase in surface rougheness improves the flotation recovery, contact angle, and bubble attachment.

TL;DR: The ability of zein nanoparticles, made with and without surfactants, to protect lutein from oxidation and to control its release was studied under various conditions as discussed by the authors.

TL;DR: In this article, the authors used the yeast cells of Magnusiomyces ingens LH-F1 to synthesize gold nanoparticles (AuNPs) using the UV-vis spectral analysis.

TL;DR: In this paper, a review summarizes the recent studies on membrane fouling and the process of surface modification to develop fouling resistant membranes in microfiltration (MF), ultrafiltration, and nanofiltration (NF) processes.

TL;DR: Mesoporous magnesium oxide modified diatomite (MgO-D) was developed through a simple precipitation method, and applied for simultaneous removal of nutrients from contaminated waters as mentioned in this paper.

TL;DR: In this paper, a comparative study of bulk stability tests and core floods with foam, both with and without oil, was conducted in rock cores with a diameter of 1 cm, significantly smaller than typical cores.

TL;DR: In this paper, a cost-effective approach was developed to prepare a porous carbon samples (PCs) by the simple carbonization of pomelo peel followed by KOH activation, and the resulting materials were characterized by different techniques, such as SEM, XRD, FTIR, XPS, and BET surface area measurement.

TL;DR: In this article, the authors investigated the effect of wettability alteration on the enhanced heavy oil recovery by NaOH-only flooding or with NaOH and Na 2 CO 3 mixed flooding.

TL;DR: In this paper, the synergistic effect of mixed cationic dodecyl amine-hydrochloride (DDA) and anionic collector sodium oleate (NaOL) at the air/water interface was investigated by the surface tension measurements.

TL;DR: In this article, a review of the nanobubbles stability theories and models in recent ten years are reviewed, including contamination (impurity) theory, dynamic equilibrium theory and its extension theory, contact line pinning effect and nanobbles internal pressure theory.

TL;DR: In this article, an organic alkali-surfactant-polymer (OASP) flooding system is established, which exhibits good compatibility with the brine containing high-valent metal ions.

TL;DR: In this paper, the surface of chitosan flakes were investigated before and after the adsorption process by SEM and SEM-EDX, respectively, and the formation of crystal-like structures was observed by SEM analysis for the investigation of copper sulfate and iron sulfate.

TL;DR: In this article, the authors investigated the role of the highly anisotropic surface charge distribution of BSA molecules on the process of their adsorption on the surface of SiO 2 using quartz crystal microbalance with energy dissipation mode.

TL;DR: In this article, the effects of cellulose nanoparticles (CNPs) dimension and concentration on the rheological and filtration properties of the drilling fluids were investigated, with half of the bentonite in the fluid replaced by a small fraction of CNPs, and the resultant fluids showed excellent shear thinning behavior and the fluids' viscosity, yield point, and gel strength increased with the concentrations of CNP.

TL;DR: In this article, the authors reported the synthesis of nitrogen-rich graphitic carbon nitride nanosheets (NRCNNS) material by an NH4Cl assisted chemical blowing approach, where the released gas from the decomposition of NH 4Cl prohibited the further polymerization of CN framework and separated the CN layers.

TL;DR: In this paper, a superhydrophilic and underwater superoleophobic TiO2 coated mesh is used to separate water from oil/water mixtures, where only the water permeates through the mesh while the oil is repelled on the mesh.

TL;DR: In this paper, a novel synthesis procedure is presented for preparing triethanolamine-treated graphene nanoplatelets (TEA-GNPs) with different specific areas (SSAs).

TL;DR: In this article, an Ag-poly(N-isopropylacrylamide-acrylic acid-acryamide) [Ag-P(NIPAM-AAc-AAm)] hybrid microgels were used as catalysts for simultaneous reduction of various nitro compounds in aqueous medium.

TL;DR: In this article, the interfacial properties of simulating water with different components of crude oil, including resins, waxes and asphaltenes, are investigated by interfacial tensiometer, surface viscoelasticity and zeta potential instruments and the results are then correlated with emulsion stability.