Naslov
REMOVAL OF ZINC IONS FROM WASTE WATERS BY ADSORPTION ON ALUMINOSULICATES

Autori
Došen-Šver, Dubravka ; Čavlek, Zlatka ; Šimić, Ivan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
3rd international Conference TEXSCI 98, Textile Science, Proceedings-Vol 3 / Militky, Jiri - : Technical University of Liberec, 1998, 512-515

Skup
Texsci 98

Mjesto i datum
Liberec, Češka Republika, 25.05.1998. - 27.05.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
waste waters; adsorption; aluminosilicates

Sažetak
Zinc exisist in textile waste waters in higher or lower amounts as a result of finishing process in textile industry. In amounts higher than 2mg/dm3 it could be very dangerous for life of organisms in water system and so indirectly for people. Therefore it is important to find a system which will completely eliminate Zn2+ions from water by saving of time, material and energy. Adsorption and ion exchange were often used for removal of cations from water (Schwuger, M. el.al. 1976; Clifford, D. et.al. 1986.; Došen-Šver, D. et.al. 1988., 1996.). In this work natural and synthetic aluminosilicates as adsorbens by an adsorption method of contact dispersion were used. Zeolite A, a mixture of different aluminosilicates with about of 39% amorphous SiO2 and montmorillonite for removal of Zn2+ions from waste water after a cotton finishing process have been investigated. A bath with the amount of Zn(NO3)2 for the treatment of a cottin material agains the crumpling was used. In the waste water the concetration of remained zinc ion s by means of AA was determined. Aliquot parts of waste water were left in a contact with different amounts of adsorbent through two hours with stirring at 25oC. Before using the adsorbents were crumbled, sieved through a sieve pore size of 0,063 mm and dried at 130 oC. (Zeolit A at 360 oC). Aliquot parts of 50 cm 3 of waste water with initial zinc ion concentrations of 58, 75, 90 and 1302mg/dm3 were left by the contact with 0,1; 0,3; or 0,5 g of adsorbents. The results of these investigations were followed by measurements of zinc ion concetration by AA, eletrical conductivity and pH value of filtrates.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA