Naslov
Wastewater from Wood and Pulp Industry Treated by Combination of Coagulation, Adsorption on Modified Clinoptilolite Tuff and Membrane Processes

Autori
Bennani, Yasmina ; Košutić, Krešimir ; Dražević, Emil ; Rožić, Mirela

Izvornik
Environmental technology (0959-3330) 33 (2012), 10; 1159-1166

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

Ključne riječi
wastewater from wood processing ; organic contaminants ; modified clinoptilolite tuff ; nanofiltration ; reverse osmosis

Sažetak
Wastewater from the wood and pulp industry is of environmental concern. It contains high concentrations of organic and inorganic matter. In this work a combined method of coagulation, adsorption and nanofiltration/reverse osmosis (NF/RO)was investigated in the purification of biologically treated wastewater from wood processing. Coagulation with 0.8 g dm−3 AlCl3·6H2O and adsorption on 2.5 gm−3 modified clinoptilolite tuff resulted in removal efficiencies of total carbon (TC), total organic carbon (TOC) and inorganic carbon (IC) up to 67.1%, 77.4% and 49.5%, respectively. Almost complete removal of solutes was achi ved after NF/RO treatment. The TOC removal efficiency with RO membrane (CPA-3, LFC-1, XLE) and tight NF membrane (NF90) was 98% and with highly porous NF membrane (DK), 88%. After the proposed treatment the purified water stream can be recycled into the process or safely disposed to the river.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Grafička tehnologija, Kemijsko inženjerstvo, Interdisciplinarne tehničke znanosti

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