检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:关晓辉[1] 秦玉春[1] 赵洁[1] 魏德洲[2]
机构地区:[1]东北电力学院应用化学系,吉林132012 [2]东北大学资源与土木工程学院,沈阳110004
出 处:《环境科学》2005年第6期94-96,共3页Environmental Science
基 金:国家自然科学基金项目(50174014)
摘 要:以浮游球衣菌为生物吸附剂,考察了菌铅比、pH、温度和时间等因素对Pb2+吸附的影响.结果表明,浮游球衣菌对Pb2+有很好的吸附效果,该过程10min内即可达到吸附平衡,且温度对吸附效果影响不大.当pH5.5,菌含量0.6 g/L,铅离子初始浓度不大于20 mg/L时,Pb2+去除率近100%,浮游球衣菌最大单位吸附量为2.1 mmol/g干菌体.浮游球衣菌对0~60 mg/LPb2+的吸附符合Freundlich方程.HCl和EDTA溶液可有效地将Pb2+从菌体上解吸下来并可重复使用.As biosorbent used Sphaerotilus natans, influencing factors on removal of Pb^2+ were investigated such as ratio of the biomass and lead, pH, temperature and time of adsorption. The results show that Sphaerotilus natans has good effect on adsorption of Pb^2+. The process of adsorption reached equilibrium in 10 minutes. Temperature has no significant effect on the adsorption. Removal of Pb^2 + approached to 100 % under the condition of pH 5.5, 0.6 g/L and c0≤20 mg/L. The maximum adsorption amount was 2.1 mmol/g dry biomass . The adsorption was fitted with Freundlich isotherm adsorption equation under the concentration of Pb^2+ 0-60 mg/L. HCl and EDTA can desorb the Pb^2+ from the bacteria effectively.
分 类 号:X75[环境科学与工程—环境工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.31