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Adsorption kinetics of Cd(II), Zn(II) and Cu(II) and their mixtures from an aqueous solution onto immobilized activated sludge
被引:1
|作者:
Filipkowska, Urszula
[1
]
Kuczajowska-Zadrozna, Malgorzata
[1
]
机构:
[1] Univ Warmia & Mazury, Dept Environm Engn, Ul Warszawska 117a, PL-10720 Olsztyn, Poland
关键词:
Heavy metals;
Mixture of metals;
Sorption kinetics;
HEAVY-METALS;
SORPTION;
REMOVAL;
IONS;
BIOSORPTION;
ALGINATE;
BIOMASS;
D O I:
10.5004/dwt.2020.25050
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
In this study, we determined the kinetics of cadmium, zinc, and copper removal by an activated sludge immobilized in 1.5% sodium alginate with 0.5% polyvinyl alcohol. The adsorption of metals from solutions of both single metals and their mixtures was found to follow the pseudo-second-order reaction. In the solutions of single metals cadmium was most effectively adsorbed (96.10 mg g(-1) d.m.); whereas in metal mixtures, it was copper (37.38 mg g(-1) d.m). It was also observed that the presence of copper in a mixture of metals impaired the sorption of cadmium and zinc.
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页码:284 / 292
页数:9
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