细菌XP05的筛选及其吸附铂的特性  

Screening of Bacterial Strain XP05 and Its Properties Adsorbing Pt^(4+)

作　　者：胡洪波[1] 刘月英[1] 黄芝[1] 古萍英[2] 傅锦坤[2] 

机构地区：[1]厦门大学生物学系,福建厦门361005 [2]厦门大学化学系,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2003年第2期233-237,共5页Journal of Xiamen University：Natural Science

基　　金：~~

摘　　要：The strain XP05 with relatively strong ability of absorbing Pt4+ was screened from bacterial strains of different sources.and was identified as Citrobacter freudii.The properties of Pt4+ adsorption by dead XP05 biomass were investigated.The optimum pH value of Pt4+ biosorption by the dead XP05 biomass was 2.0. The biosorption was a rapid process,reaching 78.1% of the maximum biosorptive capacity at the first 8 minutes and equilibrium after 60 min of the adsorption.The biosorptive capacity of the biomass rose with increasing temperature in the rage of 10～75℃.The content of the biomass and Pt4+ initial concentration in the solution also affected the biosorption process.The biosorptive capacity with 64.4 mg/gwas achieved under the conditions of 225 Pt4+ mg/L,2g biomass/L,pH 2.0 and 30℃ for 60 minutes of the adsorption.During the process of Pt4+ biosorption by dead XP05 biomass,the pH value of the solution was not changed.Cu2+?Ca2+?Co2+?Au3+?Pb2+ and Al3+ inhibited the biosorption.The adsorptive efficiency and capacity of Pt4+ by the biomass from the treatment solution containing 111.76 mg Pt4+/L of waste platinum catalyst were 61.3% and 30.65 mg/g.respectively.The strain XP05 with relatively strong ability of absorbing Pt4+ was screened from bacterial strains of different sources.and was identified as Citrobacter freudii.The properties of Pt4+ adsorption by dead XP05 biomass were investigated.The optimum pH value of Pt4+ biosorption by the dead XP05 biomass was 2.0. The biosorption was a rapid process,reaching 78.1% of the maximum biosorptive capacity at the first 8 minutes and equilibrium after 60 min of the adsorption.The biosorptive capacity of the biomass rose with increasing temperature in the rage of 10～75℃.The content of the biomass and Pt4+ initial concentration in the solution also affected the biosorption process.The biosorptive capacity with 64.4 mg/gwas achieved under the conditions of 225 Pt4+ mg/L,2g biomass/L,pH 2.0 and 30℃ for 60 minutes of the adsorption.During the process of Pt4+ biosorption by dead XP05 biomass,the pH value of the solution was not changed.Cu2+?Ca2+?Co2+?Au3+?Pb2+ and Al3+ inhibited the biosorption.The adsorptive efficiency and capacity of Pt4+ by the biomass from the treatment solution containing 111.76 mg Pt4+/L of waste platinum catalyst were 61.3% and 30.65 mg/g.respectively.

关 键 词：细菌XP05 生物吸附 吸附量 吸附能力 菌株筛选 废水处理 含铬废液 

分 类 号：X703[环境科学与工程—环境工程] X172