The in situ regeneration of reduced nicotinamide cofactors (NAD(P)H) is necessary for practical synthesis of many important chemicals. Here, we report the engineering of a highly stable and active mutant phosphite dehydrogenase (12x-A176R PTDH) from Pseudomonas stutzeri and evaluation of its potential as an effective NADPH regeneration system in an enzyme membrane reactor. Two practically impor...

The presence of heavy metal ions in polluted wastewater represents a serious threat to human health, making proper disposal extremely important. utilization nanofiltration (NF) membranes has emerged as one the most effective methods ion removal from due their efficient operation, adaptable design, and affordability. NF created advanced materials are becoming increasingly popular ability depollu...

Boron rejection by nanofiltration (NF) and reverse osmosis (RO) membranes in the presence of glycerol, mannitol and sorbitol was investigated as a function of feed solution pH and boron:polyol molar ratio. In the presence of polyols, significant boron rejection improvement was obtained and the extent of the impact was directly related to the stability constant of the boron-polyol complex. Polyo...

Application of combined ultrafiltration (UF) and nanofiltration (NF) was examined to recycle cellulase and concentrate glucose present in lignocellulosic hydrolyzate. With PES10 membrane operated at 25.6 l/m(2) h, 73.9% of cellulase protein present in the hydrolyzate suspension could be recovered while allowing free transmission of glucose. The permeate obtained from UF was then concentrated by...

Membrane technology is growing very fast and it is used in several main applications from desalination, water and wastewater treatment to medical, biotechnology and gas separation field. Different membrane processes are applied depending on the applications from more traditional pressure-driven membrane processes (Microfiltration, MF; Ultrafiltration, UF; Nanofiltration, NF) to more advanced on...

Direct nanofiltration (NF) of secondary treated effluent can significantly simplify water recycling, especially for small scale operations. This study evaluated the performance a novel flat-sheet submerged NF membrane module at low flux to minimize fouling. The separation system was assessed by periodically measuring color, turbidity, pH, UV light absorbance wavelength 254 nm, and total organic...

Enzymes in living cells are highly dynamic but at the same time regularly confined for achieving efficient metabolism. Inspired by this phenomenon, we have prepared a novel biocatalytic membrane with high enzyme activity and stability tuning confinement strength of to enzyme, which was achieved via modifying support layer polymeric nanofiltration (NF) reversely filtrating enzyme. A mussel-inspi...

The objective of this study was to develop an innovative and advanced integrated “membrane oxidation” system for the treatment domestic wastewater by coupling membrane bioreactor (MBR), nanofiltration (NF) ozonation. Five contaminants were selected (acetaminophen, carbamazepin, sulfamethoxazole, tetracyclin terbutryn). MBR effluent samples have been fully characterized using conventional analys...

Abstract Anti-fouling properties and chlorine resistance nature are highly desirable features for membranes used in nanofiltration (NF). Conventional polymeric NF often suffer from fouling issues poor stability under based chemicals. Therefore, this work, a thin film composite (TFC) membrane was modified by coating binding agent polydopamine (PDA) graphene oxide (GO) using simple scalable inkje...

Poultry slaughterhouses produce a large amount of wastewater, which is usually treated by conventional methods. The traditional techniques face some challenges, especially the incapability recovering valuable nutrients and reusing water. Therefore, membrane technology has been widely adopted researchers due to its enormous advantages over Pressure-driven membranes, such as microfiltration (MF),...