Naslov
Purification of Electroplating Wastewaters Utilizing Waste By-Product Ferrous Sulfate and Wood Fly Ash

Autori
Oreščanin, Višnja ; Mikelić, Luka ; Lulić, Stipe ; Nađ, Karlo ; Mikulić, Nenad ; Rubčić, Mirta ; Pavlović, Gordana

Izvornik
Journal of environmental ecience and health. Part A: toxic hazardous substances and environmental engineering (1093-4529) 39 (2004), 9; 2437-2446

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

Ključne riječi
electroplating wastewater ; ferrous sulfate ; wood fly ash ; heavy metals

Sažetak
A new procedure for electroplating waste water treatment using waste by-product (ferrous-sulfate) and waste (wood fly ash) is presented. Ferrous-sulfate was employed for Cr(VI) reduction whereas neutralization and heavy metals removal from electroplating waste waters was performed using wood fly ash. Heavy metal removal efficiency varied from 97.5% for Cu to 99.973% for Zn. Satisfying results can be achieved already at the pH 8. The method is suitable for the purposes of waste water treatment and disposal in compliance with environmental laws. Furthermore, it is technically simple, cost-efficient and requires less space compared to the classical methodology. According to the composition of its water extractable fraction remaining waste ash could be safely deposited on domestic waste repositories.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA