Membrane processes for surface water treatment include microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF), depending on the target material to be removed and the limiting process economics. MF will remove turbidity, but no dissolved compounds, unless associated with colloids, UF will, depending on the molecular weight cut off (MWCO), partially remove NOM, and NF will remove NOM ...

Date juice was treated by cross- flow ultra-filtration with molecular weight cut-off (MWCO) of 5 kDa. Optimized levels of feed brix, TMP and operation time were determined as 47.13, 82.11 psi and 30 min, respectively. Under such conditions, 80.94% decolourisation and 97.78 % turbidity reduction were obtained while loss of glucose and fructose were estimated to be only 3.49% and 9.62%, respectiv...

Membrane fouling by the high protein concentrations used in biopharmaceutical industry remains poorly understood. In this study, feed of up to 10,000 ppm bovine serum albumin (BSA) were investigated with three polymeric membranes, two which had same molecular weight cut-off (namely, PES100 and PSF100), membrane material PES10). A crossflow ultrafiltration (UF) setup equipped electrical impedanc...

Carbon nanotubes (CNTs) with hollow nanochannels have attracted much attention in preparing high-performance water treatment membranes. In this paper, the grafting polymer chains, including alkynyl terminated poly(methyl methacrylate) methacrylate (PMMA) single chain and PMMA-b-poly (ethylene glycol) [P(PEGMA)] diblock molecular were synthesized by reversible addition-fragmentation transfer (RA...

The feasibility of using flat-sheet ultrafiltration polyethersulfone (PES) membranes for treatment of effluent from a rubber glove factory has been investigated. Membranes of molecular weight cut-off (MWCO) 100 kDa and 10 kDa were operated in cross-flow filtration to evaluate the efficiency of rejections of certain selected parameters in the wastewater. The membrane operation was carried out at...

PURPOSE The goal of the present study was to develop a poly (ethylene oxide) N10 (PEO N10) based melt-cast matrix system for efficient and prolonged delivery of hesperetin (HT), a promising bioflavonoid, to the posterior segment of the eye through the topical route. METHODS HT film was prepared by melt-cast method using PEO N10 and cut into 4mm×2mm segments, each weighing 8mg. This film was e...

Nanofiltration (NF) is a compact process that has potential for removing organic and inorganic pollutants for drinking water. In this study, arious NF membranes for surface water treatment were compared using a batch-stirred cell and crossflow equipment in terms of solute rejection nd membrane flux. The rejection of natural organic matter (NOM) was closely related to ion rejection and membrane ...

Biological wastewater treatment plants (BWWTP) are widely used to treat effluents from chemical process industry. However, there exist refractory substances, such as phenolic compounds, which require previous treatments. Advanced oxidation processes (AOP) are thoroughly being studied as pre-treatment to deal with such phenolic compounds before a BWWTP. Metal salts are widely used as homogeneous...

The polyelectrolytes poly(L-lysine) (PLL, Mw = 2.60 × 10 Da) and hyaluronic acid (HA, Mw = 1.32 × 10 Da) were purchased from Sigma Aldrich (Saint-Quentin Fallavier, France) and Lifecore Biomedical (Chaska, USA) respectively. Coupling agents as N,N′Dicyclohexylcarbodiimide 99% (DCC), N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride ≥ 98% (EDC), N-Hydroxysuccinimide 98% (NHS), and NHy...