摘要
以微生物吸附为基础的重金属生物浓集技术,在治理环境污染以及从工业废水中除去或回收重金属方面,可能替代目前广泛应用的传统工艺.在文[1—4]的基础上,我们研究了真菌少根根霉(Rhizopus arrhizus)对水体系中铅的吸附规律、解吸条件和吸附作用机理,并以该微生物为吸附剂除去工业废水中的铅作了实验,取得了有意义的结果.
With a fungus Rhizopus arrhizus, the adsorption and desorption of lead in aqueous systems was systematically iavestigatej and the mechanism of the metal biosorption was also explored. R. arrhizus had high ability and a certain selectivity for the binding of lead. The accumulating lead from aqueous systems by the fungus only required mild adsorbing conditions, the biosorption kinetics was rapid and reversible, and the uptake of the metal obeyed the Freundlich isotherm for single-layer adsorption. Variation of PH markedly influenced the metal adsorption equilibrium and dilute hydrochloric acid was effective for desorption of lead from preloaded biomass. The experimental results supported the hypothesis of physico-chemical adsorption mechanism at the cell surface. The treatment of two simulated industrial waste waters with the biosorbent obtained satisfactory results.
出处
《四川大学学报（自然科学版）》
CAS
CSCD
1991年第2期261-264,共4页
Journal of Sichuan University(Natural Science Edition)
关键词
少根根霉
吸附
铅
rhizopus arrhizus, lead, adsorption, treatment of waste water.
