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...

We study the computational power of string processing systems with excision and insertion rules with communication. The strings are distributed in different regions, and the rules are defined by cutting out a substring flanked by specific repeated symbols and a reverse operation; the rule only specifies the repeated symbol and the regions of reactants and products. It turns out that they can ge...

The leather industry is characterized by the production of a huge amount wastewater with high organic/inorganic charge, causing widespread water and soil pollution. Pressure-driven membrane operations bioreactors have long been proven to be valid approach for treatment tanning wastewaters aimed at recovery raw materials as well removal toxic environmentally harmful substances. Such processes, o...

this is a comprehensive review of the recent progresses made in the field of zeolite membranes. it describes zeolitic materials and methods of membrane fabrication, followed by a summary of applications for gas separation, pervaporation and separation of liquid mixtures. special attention is called to polymer mixed matrix membranes (mmms) and membranes based on metal organic frame works (mofs)....

In this paper we relate the membrane systems with surface objects to a fragment of Brane calculus based on Pino, Phago and Exo operations, by encoding this fragment into the membrane systems with surface objects. We open the discussion on distributing the global multiset of rules of the membrane systems with surface objects into local sets of rules.

The use of ceramic low pressure membranes for drinking water production has been increasing in the past decades. However, fouling during membrane operations is still a challenging topic that requires attention and investigation. During filtration of surface water, a major contribution to fouling is attributed to the presence of dissolved organic carbon(DOC) and its fractions which comprise biop...

Pervaporation (PV) is a separation process in which minor components of a liquid mixture are preferentially transported by partial vaporization through a non-porous permselective (selectively permeable) membrane. PV is an emerging technology in environment cleanup operations, especially in the removal of volatile organic compounds (VOCs) from industrial wastewaters or contaminated groundwaters....

Abstract The present work investigated the impact of ultrafiltration (UF) and nanofiltration (NF) membranes on recovery fractionation polyphenolic compounds polysaccharides from Sangiovese Cabernet Sauvignon wine lees. A laboratory-made flat-sheet membrane in cellulose acetate (CA400-38) was used UF treatment lees; three (CA316, CA316-70, CA400-22) a polyamide commercial (NF90) were NF All char...