BACKGROUND Circulating microRNAs are stably detectable in serum/plasma and other body fluids. In patients with acute kidney injury on dialysis therapy changes of miRNA patterns had been detected. It remains unclear if and how the dialysis procedure itself affects circulating microRNA level. METHODS We quantified miR-21 and miR-210 by quantitative RT-PCR in plasma of patients with acute kidney...

The separation of whey proteins from caseins has traditionally been carried out by precipitation of the caseins, either through destabilisation by rennet or by acidification. Microfiltration (MF) is a membrane filtration process that has been investigated for the fractionation of milk proteins [1,2,3]. Microfiltration membranes with molecualr weight cutoff (MWCO) 0.1 μm can be used to separate ...

Large quantities of wastewater are generated by the petroleum refining process. Micron-scale emulsion droplets and submicron difficult to remove from oil-refined wastewater, addressing these issues has been a major challenge for researchers. Membrane technology is widely used in water treatment because it very selective effective filtration his research focuses on oil refinery using polysulfone...

In this work the selectivity of crosslinked organic solvent stable PBI membranes is tuned by varying molar ratio two grafting agents: a long flexible polymer modifier (Elastamine RE-1-1000, 1000 g mol-1) and small molecule (2-methoxyethylamine, 75 mol-1). Grafting exclusively with chain provided membrane molecular weight cut-off (MWCO) 2000 mol-1 in acetonitrile. Increasing proportion reaction ...

Comparison of two commonly used techniques for molecular weight determination of natural organics, ultrafiltration (UF) fractionation and high-performance size exclusion chromatography (SEC), shows that neither technique gives absolute measures of molecular weight. Investigations of International Humic Substances Society standard humic and fulvic acids as well as natural organic matter concentr...

Nanofiltration is a promising solution for the removal of emerging and persistent micropollutants, but it limited by operating expenses due to high membrane areas operational pressures, dictated membrane’s low molecular weight cut-offs (MWCO), formation large amounts concentrate be treated, e.g. advanced oxidation. In this paper, simple proposed enhance retention micropollutants adding cyclodex...

Graphene oxide (GO) membranes on Nylon support were modified by UV-assisted reduction to control their behavior in the filtration of water containing organic pollutants. Pyridine, phenol, 2-naphthol and disperse blue 3 used as probe pollutants determinate molecular weight cut-off (MWCO) prepared. The prepared with GO loads 0.04 0.06 mg cm?2 subjected UV radiation from a Hg lamp (30 W m?2) for 3...

Membrane reusability determines the economic sustainability of separation process. However, membrane was deduced by antifouling properties, while actual reuse performance using palm oil mill effluent (POME) is rarely reported. This study investigates nano-Fe3O4/PVDF (PVDF1) for POME treatment. The chemical oxygen demand (COD), total suspended solid (TSS) permeate, molecular weight cut off (MWCO...

Hydrophobic, chemically resistant nanofiltration (NF) polymeric membranes could provide major improvements to a wide range of processes, from pharmaceutical manufacturing hazardous waste treatment. Here, we report the fabrication first poly (vinylidene fluoride) (PVDF) NF retaining their hydrophobicity and surface chemistry. This was achieved by incorporating in polymer 2D siloxene, which induc...

In the present study, graphene oxide (GO) was incorporated as a nanoadditive into a polyphenylsulfone (PPSU) to develop a PPSU/GO nanocomposite membrane with enhanced antifouling properties. A series of membranes containing different concentrations (0.2, 0.5 and 1.0 wt.%) of GO were fabricated via the phase inversion method, using N-methyl pyrrolidone (NMP) as the solvent, deionized water as th...