BATCH NICKEL REMOVAL FROM AQUEOUS-SOLUTION BY SPHAGNUM MOSS PEAT

被引:340
作者
HO, YS
WASE, DAJ
FORSTER, CF
机构
[1] UNIV BIRMINGHAM,SCH CHEM ENGN,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
[2] UNIV BIRMINGHAM,SCH CIVIL ENGN,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
关键词
PEAT; NICKEL; ADSORPTION; LANGMUIR AND FREUNDLICH;
D O I
10.1016/0043-1354(94)00236-Z
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The batch adsorption of Ni(II) onto sphagnum moss peat has been studied. The reaction was pH dependent, the optimum range being 4.0-7.0. Langmuir and Freundlich isotherms, established for various initial nickel concentrations and for a range of pH values, were used to obtain a single relationship between initial metal concentration, metal removal, and initial pH. The latter was found to control efficiency of nickel removal. Kinetic data suggested involvement of a chemical rate-limiting step, and a predictive relationship was derived relating nickel removal to peat dose. In comparison with other metals, nickel removal is poor, and possible reasons are discussed.
引用
收藏
页码:1327 / 1332
页数:6
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