Showing papers in "Separation and Purification Technology in 2018"

TL;DR: In this paper, the authors reviewed the applications of dendrimers and other dendritic polymers in water treatment, the mechanism of their interaction with target pollutants, the key parameters that affect their performance and finally the opportunities for their future potential.

TL;DR: In this article, the authors synthesize two porous adsorbents of ZIF8 and ZIF-67 and further investigate their performance of removing Pb2+ and Cu2+ from wastewater.

TL;DR: In this article, the effect of different operating parameters (i.e. solvent concentration, temperature, time and solid/liquid ratio) were further evaluated to determine the optimal extraction conditions for polyphenols recovery in terms of total phenolic content (TPC) and antioxidant activity based on DPPH radical scavenging method.

TL;DR: A review of the previous laboratory analysis and case studies on the application of the pressure-driven ceramic membrane technology for treatment of industrial wastewaters is presented in this article, which reveals that the efficiency of this technology has been proven in a wide variety of waste water from different industries and activities including pulp and paper, textile, pharmaceutical, petrochemical, food and mining.

TL;DR: In this paper, the effect of MOF functionalization and concentration on the permeability and selectivity of different gases (CH4, N2, H2 and CO2) was determined.

TL;DR: Although lots of separating membranes with super-wettability have been fabricated to separate oil or water from the mixtures, to separate both heavy (ρoil> ρwater) and light(ρoil) is a hot topic because of the frequent oil spill accidents as discussed by the authors.

TL;DR: In this article, a physical recycling method, grinding flotation, is creatively proposed for the separation and recovery of LiCoO 2 and graphite from spent lithium-ion batteries (LIBs).

TL;DR: A comprehensive review through few decades of capacitive deionization (CDI) ever since discovery of carbon aerogel, including a brief theory and factors influencing along with detailed focus on various electrode materials explored till now is done.

TL;DR: In this article, a novel polyethersulfone (PES) ultrafiltration membranes with different contents of the CuO/ZnO (CZN) nanocomposite were prepared by the non-solvent induced phase inversion method.

TL;DR: In this article, the optimal conditions for ultrasound assisted extraction of polyphenols from pomegranate peel using response surface methodology (RSM) were determined, and the optimal extraction process conditions were as follows: extraction time of 25 minutes, ethanol concentration of 59%, solid to solvent ratio of 1:44, and extraction temperature of 80°C.

TL;DR: In this article, biochar-supported nanoscale zero-valent iron (nZVI/BC) was synthesized and used as an activator for Fenton-like removal of sulfamethazine (SMT).

TL;DR: In this review, the authors highlight the most recent development in bio-regeneration including the regeneration mechanism, the relationship between the reversibility of adsorption and the efficiency of bio-Regeneration, the general aspects affecting bio-recovery, the principle and target compounds for bio- Regenation, and different established methods for quantifying the bio- regeneration.

TL;DR: In this article, the application of persulfate (PS)/vis-light for the degradation of Rhodamine B (RhB) using bismuth oxyiodide magnetic composites (BiOI/Fe 3 O 4, BOMCs) was investigated.

TL;DR: In this paper, the feasibility of utilizing direct contact membrane distillation (DCMD) for the treatment of industrial dyeing wastewater and their characteristic pollutants were demonstrated, and two commercial hydrophobic membranes made of polytetrafluoroethylene and polyvinylidene fluoride (PVDF) were comparatively studied.

TL;DR: In this paper, a loose nanofiltration (NF) membrane Sepro 2A was employed to desalinate diverse dye species (2 reactive dyes and 4 cationic dyes).

TL;DR: In this article, a mild, renewable and non-toxic reducing agent and efficient stabilizer in the absence of hazardous and toxic materials was synthesized using Melissa Officinalis L. leaf extract.

TL;DR: In this paper, the authors tried to select the best nanomaterial among the used famous nanOMaterials for modifying polyvinylidene fluoride (PVDF) based membranes, and fabricated PVDF mixed matrix membranes (MMMs) consisting of cloisite 30B clay, carboxyl functionalized multi-walled carbon nanotubes (MWCNTs-COOH), SiO2 and TiO2.

TL;DR: In this article, mixed matrix membranes (MMMs) were prepared using polydimethylsiloxane (PDMS) as a hydrophobic polymer and ZIF-67 as inorganic filler particle.

TL;DR: In this paper, a complete process for the recycling of lithium-ion batteries to recover metals and materials as value added products fulfilling zero waste concept is presented, which is economical as well as environment friendly and has potential to be translated in industry after scale-up studies.

TL;DR: In this article, a polypyrrole (PPy) based magnetic nanocomposite for a fast-adsorptive Cr(VI) ion removal from wastewater using unsteady electromagnetic field was presented.

TL;DR: In this article, the authors reported new ternary photocatalysts by decoration of carbon dots and AgCl over g-C3N4 nanosheets (gCN-NS/CDs/AgCl) through simple procedure and they were characterized by a couple of techniques including X-ray diffraction (XRD), energy dispersive analysis of X-rays (EDX), scanning electron microscopy (SEM), high resolution transmission electron microscope (HRTEM), Xray photoelectron spectroscopy (XPS), Fourier transform-infrared

TL;DR: In this article, new types of MMMs are fabricated by incorporating NH2-MIL-53(Al) filler into cellulose acetate (CA) polymer, and the results showed that the presence of NH 2-Mil-53 (Al) in CA matrix had enhanced the CO2 permeability, CO2/N2 and CO 2/CH4 ideal selectivities from 15.5 Barrer to 52.6 Barrer, 8.8 to 23.4 and 10.7 to 28.7, respectively.

TL;DR: In this article, a review of recent advances and emerging issues associated with biofouling control in membrane bioreactors (MBRs) for domestic wastewater treatment is presented.

TL;DR: In this paper, the main pollutants in the photovoltaic cells manufacturing effluent were removed by electrodialysis application, and the results obtained can be used to optimize the pollutant removal recovery at large scale.

TL;DR: In this article, PANI modified SnO2 nanoparticles (SnO2/PANI nanocomposites) are synthesized via the following procedures: (i) SnO 2 nanoparticles were synthesized by hydrothermal treatment of SnCl4·5H2O in deionized water at 200˚°C for 15´h; and (ii) adsorption of PANI in N,N-Dimethylformamide solution by SnOII nanoparticles, then evaporation of N, N-dimethyl formamide.

TL;DR: ZIF-8(zinc-methylimidazolate framework-8) was put into a tea bag for selective removal of oils from water surface, and exhibits strong hydrophobicity with a water contact angle of 142° as discussed by the authors.

TL;DR: In this paper, the main components and properties of microalgae suspension are summarized, and strategies for mitigation of algal fouling are provided in detail, including pretreating feedwater, changing membrane properties, and enhancing hydrodynamic conditions.

TL;DR: In this article, different proportions of N,Pd co-doped TiO2 were embedded in a PSf polymeric membrane through the phase inversion method and the membrane evaluated for the degradation of a dye (eosin yellow) under visible light irradiation.

TL;DR: In this paper, a state-of-the-art summary on current membrane techniques in rare earths separation including both liquid and non-liquid membranes is presented, including polymer inclusion membranes, imprinted membranes, nanocomposite membranes and metal-organic framework membranes.

TL;DR: In this article, a three-component heterojunction photocatalyst (Bi/α-Bi2O3/g-C3N4, labeled as BBC) exhibited a remarkably high photocatalytic activity under the visible light irradiation, the degradation rate reached almost 90.2% for Tetracycline (TC) and 95.6% for RhB after 180min and 90min reaction respectively, far outperforming other decent photocatalysers under the same conditions.