期刊
PROCESS BIOCHEMISTRY
卷 38, 期 11, 页码 1627-1631出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-9592(03)00055-4
关键词
biosorption; copper(II); synthetic wastewater; cone; Thuja orientalis
In this work, the removal of Copper(II) ions from aqueous solutions on the cone biomass of Thuja orientalis has been studied by using batch adsorption techniques. The biosorption equilibrium level was determined as a function of contact time, pH, temperature, agitation speed at several initial metal ion and biosorbent concentrations. Zeta potential values of the cone biomass were defined at different values of pH according to deionized water and Cu(II) solution. The removal of Cu(II) from aqueous solutions increased as pH, temperature and agitation speed of the solution were increased. The maximum copper biosorption occurred at 7 r.p.s. agitation speed, 70 degreesC temperature and pH 7.7. The adsorption constants were defined according to the Freundlich, Langmuir and BET isotherm models. The experimental adsorption data were fitted to the Langmuir adsorption model. The results indicated that the cone biomass of Thuja orientalis is a suitable biosorbent for the removal of Cu(II) from wastewaters. (C) 2003 Elsevier Science Ltd. All rights reserved.
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