Pesticides removal performance by low‐pressure reverse osmosis membranes

Abstract

Pressure driven techniques (viz. reverse osmosis and nanofiltration) have the potentiality to remove the pesticides from water. The observations revealed that pesticides removal mostly depends upon the molecular weight (size exclusion) and hydrophobicity (log P) of the pesticides. Interfacial polymerization of m-phenylene diamine (MPD) and trimesoyl chloride (TMC) on the polysulfone membranes impart the salt rejection property in it. It is shown that with the greater salt rejection property, the performance removal of pesticides also is in increasing trend.

Pentachlorophenol removal from water using surfactant-enhanced filtration through low-pressure thin film composite membranes

“…Schematic diagram of testing unit for flat membrane (P, pressure gauze; T 1 and T 2 , pressure test cell; R, back pressure regulator; V, by pass valve; A, pressure accumulator; F, pump; G, feed solution tank). lier experiment [6]. The flow rate of the solution is 48 l h −1 and the size of the membrane is 0.00152 m 2 .…”

PTFE/polyamide thin-film composite membranes using PTFE films modified with ethylene diamine polymer and interfacial polymerization: Preparation and pervaporation application

“…One major approach to prepare TFC membranes is introduction of the selective layer to the top surfaces of porous substrates through interfacial polymerization [1][2][3][4][5][6][7][8][9]. In addition to reverse osmosis and nanofiltration, TFC membranes made from interfacial polymerization have also been applied to pervaporation in liquid-liquid separations.…”

On the differences of separation of hazardous catechol and resorcinol through tailor-made thin film composite (TFC) membranes

“…To mitigate the 26 problem, with advanced technological intervention, scientists and 27 technologists have shifted their attention to 'membrane filtration 28 processes'. Q4 29 The simplicity in operation, the requirement of minimum use of 30 chemicals, no requirement for a change of phase or state of the 31 solvent and valid for bulk requirement make the membrane 32 processes attractive [16]. The key advantage of membrane 33 filtration is that it is able to produce a purified effluent that can 34 be reused, while the waste stream that requires disposal is 35 concentrated and reduced in volume [17].…”