Showing papers in "Colloids and Surfaces A: Physicochemical and Engineering Aspects in 2018"

TL;DR: In this paper, the authors explored the mixed convective flow of viscous fluid by a rotating disk and derived the velocity and thermal gradients at the surface of disk in tabular forms.

TL;DR: In this paper, a magnetic metal organic frameworks (MOFs) composite was designed and synthesized as the adsorbent for removal of lead (Pb(II)) and malachite green (MG) in wastewater.

TL;DR: In this paper, water stable Fe3O4@ZIF-8 composites were successfully fabricated by a facile modification, and the composites are characterized by powder XRD, SEM, TEM and BET surface areas measurement.

TL;DR: In this paper, a green synthesis of silver nanoparticles was developed, using a low-toxic system of microemulsion and nano-emulsion with castor oil as the oily phase, Brij 96-V and 1,2-hexanediol as the surfactant and co-surfactant respectively.

TL;DR: In this paper, the feasibility of using two types of nanoparticle additives in water-based drilling fluid has been investigated, and the results showed that the addition of clay and SiO2 nanoparticles improved the rheological and fluid loss properties.

TL;DR: In this article, three environmentally friendly activated carbons with mainly micropores based on loofah sponge (LSC), as the adsorbents, were prepared through a simple carbonization process under argon atmosphere at 600°C, 800°C and 1000°C.

TL;DR: In this paper, the performance of a nano-enhanced water base fluid for advanced drilling operations was investigated. And the results demonstrated that the nanoenhanced drilling fluids have an improved thermal stability at heightened temperatures and can withstand the harsh conditions in advanced drilling operation while they impose a lower environmental impact and capital costs.

TL;DR: In this paper, an artificial neural network as well as least square support vector machine (LSSVM) are applied in order to predict thermal conductivity ratio of alumina/water nanofluid as a function of particle size, temperature and volumetric concentration.

TL;DR: In this article, the performance of four classes of nonionic poly(ethylene oxide) poly(propylene oxide) copolymer demulsifiers and sodium dodecyl sulfate (SDS) as well as their dynamic demulsification process on the W/O light crude oil emulsion were analyzed by the multiple light scattering method.

TL;DR: In this paper, a biochar/MnAl-layered double hydroxides (LDH) composites were prepared to remove Cu (ΙΙ) from aqueous solution and the affecting factors including sorbent dosage, initial pH and coexistence cations were investigated by batch experiments.

TL;DR: In this article, a three-dimensional porous β-cyclodextrin/chitosan functionalized graphene oxide hydrogel (3D-GO/CS/β-CD) was synthesized by a simple and facile chemical reduction method in the presence of sodium ascorbate which acted as a reducing agent, and its application as an adsorbent for MB removal was investigated.

TL;DR: In this article, a nanoparticle viz., TiO2 (∼50nm) with concentration of 0.05 and 0.1 wt% was tested as co-stabilizer to improve the stability of SiO2 nanofluid [0.5

TL;DR: In this paper, a comparative study of five water base nanofluids is performed and the results show that velocity decays for larger values of magnetic parameter and porosity while it is enhanced through squeezing parameter.

TL;DR: In this paper, the potential application of Mg-laden biochar prepared from Mgenriched bamboo to remove and recover phosphate from water was investigated, and the maximum phosphate adsorption amount was 344, 357 and 370 mg/g.

TL;DR: In this article, the Fe3O4@Chitosan nanocomposites were synthesized in the laboratory and investigated for potential enhanced oil recovery (EOR) effects for the first time, various static and dynamic experiments, including contact angle, zeta potential, absorbance spectroscopy, oil viscosity, interfacial tension (IFT), and carbonate sand pack flooding were conducted for different concentrations of NPs in the seawater.

TL;DR: In this article, magnetic lignin-based carbon nanoparticles (MLBCN) were synthesized using a precipitation-carbonization process and the structure was confirmed by FTIR, XRD, Raman, BET, SEM, DLS and VSM.

TL;DR: In this paper, a novel magnetic adsorbent for Cr(VI) removal was synthesized by decorating corncob biochar with polypyrrole (PPy) (MBC/PPy).

TL;DR: In this paper, a highly efficient and reusable zeolite was prepared using the biopolymer chitin as mesoporosity agent and applied to adsorb three cationic dyes.

TL;DR: In this paper, different weight percentages of (10, 20, and 30%) of α-FeOOH on BiOI visible light active nanocomposite via facile wet impregnation method were prepared.

TL;DR: In this paper, the Co3O4 core-shell microspheres are successfully designed and synthesized via a new rapid and energy-efficient room temperature interfacial reaction and applied to supercapacitors for the first time.

TL;DR: In this paper, a hierarchical core-shell type MXene-based composite materials for high-efficient dye removal in wastewater treatment via layer-by-layer (LbL) strategy was investigated.

TL;DR: In this paper, high stable and luminescent multicolor carbon quantum dots (CQDs) were prepared using quince fruit (Cydonia oblonga) powder as carbon precursors in one pot via microwave irradiation.

TL;DR: In this article, the authors investigated the adsorption process and removal mechanism of glyphosate by modified biochar (BC), which was loaded on the palm BC through liquid phase chemical reduction.

TL;DR: In this paper, a modified one-step method under CO2 atmosphere for the purification of toxic dye, using the mixture of FeCl3·6H2O and peanut shells as precursor.

TL;DR: In this paper, an effective elimination of organic dye (methylene blue) was carried out by poly(methyl methacrylate) (PMMA) incorporated metal oxide nanocomposites using Sapindus mukkorossi (Plant extract) at optimised conditions.

TL;DR: In this paper, the authors adopted a synthetic monomer of acrylamide to graft chitosan and lignin together by microwave assisted method, and the results showed that the soluble CAML flocculant had a wide flocculation window and pH effective range.

TL;DR: In this paper, the reduced graphene oxide (rGO) has been prepared in an eco-friendly manner using precursors like graphite and external cover of waste metallic cases (aluminium and stainless steel) of spent lithium ion batteries (LIBs) in presence of hydrochloric acid (HCl).

TL;DR: In this paper, an ultra-sonication induced adsorption of TiO2 nanoparticles onto the surface of polyacrylonitrile (PAN) nanofibers was investigated.

TL;DR: In this article, the authors compared the flotation of two calcites, with different degrees of purity, and one apatite, related to the amount and type of collector adsorbed on the mineral surface, and to the reactivity of these minerals (acid-base interaction and dissolution).

TL;DR: In this paper, the surface interactions and adsorption mechanism of alkyl hydroxamic acid bearing collectors and sodium silicate depressant on common carbonatite gangue minerals, including calcite, dolomite and ankerite in flotation were investigated.