Naslov
Organics removal from aqueous solutions by commercial RO and NF membranes of characterized porosities

Autori
Košutić, Krešimir ; Kunst, Branko

Izvornik
Desalination (0011-9164) 142 (2002); 47-56

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Reverse osmosis; Nanofiltration; Membrane porosity; Organic pollutants; Pesticides; Sieving; Physicochemical interactions

Sažetak
Removal of organic pollutants of petrochemical and agrochemical origin by some commercial reverse osmosis (RO) and nanofiltration (NF) membranes of characterized porosity was investigated. The rejection of organics was shown to depend on both the membrane properties like pore size, membrane material, membrane charge and solute characteristics such as molecule size, charge and polarity. The rejection of the small nonionized organic molecules by the tight pore membranes is influenced by both the sieving parameters (solute and pore size) and by the physicochemical interactions. The rejection of the same pollutants by the wider pore membranes is dominantly influenced by the physicochemical interactions. The rejection ofpesticides is prevalently governed by the sieving mechanism based on the size ofthe solute molecule and the membrane pore size. However, the physicochemical effects cannot be totally neglected, and they can contribute to the rejection of some pesticides by certain membranes.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA