EVALUATION OF THE CD, CU, AND ZN BIOSORPTION IN 2-METAL SYSTEMS USING AN ALGAL BIOSORBENT

被引:80
作者
DECARVALHO, RP [1 ]
CHONG, KH [1 ]
VOLESKY, B [1 ]
机构
[1] MCGILL UNIV,DEPT CHEM ENGN,MONTREAL,PQ H3A 2A7,CANADA
关键词
D O I
10.1021/bp00031a005
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The equilibrium sorption capacity of the formaldehyde-cross-linked brown seaweed Ascophyllum nodosum biomass was studied using two-metal systems comprising either (Cu + Zn), (Cu + Cd), or (Zn + Cd). Three-dimensional sorption isotherm surfaces were used in the evaluation of sorption performance, replacing simple isotherm curves. While each of the metals tested can inhibit the sorption of the others, at low total residual metal concentrations the total metal sorption uptake increases. At higher total metal concentrations, the total metal sorption uptake either remains constant, or there may be a slight decrease compared to single-metal uptakes. This is an indication of a mutual interference in the sorption uptake of the two metals tested in each system.
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页码:39 / 44
页数:6
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