INFLUENCE OF CHELATING AGENTS ON 60Co UPTAKE BY FRESH WATER ALGAE

被引:0
|
作者
Hornik, Miroslav [1 ]
Pipiska, Martin [1 ]
Kociova, Martina [2 ]
Augustin, Jozef [1 ]
Lesny, Juraj [1 ]
机构
[1] Univ SS Cyril & Methodius, Fac Nat Sci, Dept Biotechnol, SK-91701 Trnava, Slovakia
[2] SCPV, Res Inst Plant Protect, SK-92168 Piestany, Slovakia
关键词
Co-60; biosorption; Chlorella; Co-EDTA; Co-NTA; Co-Citrate;
D O I
暂无
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Chlorella sp. isolated from the leaf surface of water plants was used to obtain the characteristics of cobalt biosorption using (CoCl2)-Co-60 in the presence of complexing ligands. Concentration equilibrium of Co biosorption was reached Within One hour at 22 degrees C, and the process was not pH dependent within the range pH 4 to 7. Cobalt biosorption capacity Q(max) = 14.5 mg.g(-1) (d.w.) was reached from the Co2+ solution >= 1 mmol.dm(-3). Biosorption is diminished in the presence of complexing ligands. The efficiency of ligands to suppress Co biosorption increased in the order: citrate < NTA < EDTA. Because Chlorella genus is a common autochthonous green algae population of shallow fresh waters, it can play a decisive role in decontamination of waters polluted with cobalt in inorganic Co2+ form originating from chemical or nuclear wastes.
引用
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页码:419 / 422
页数:4
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