污染控制技术及原理
郭彤,马玉龙,朱宝长.载铜蒙脱石对大肠杆菌K88吸附性能的研究[J].环境科学学报,2009,29(3):542-547
载铜蒙脱石对大肠杆菌K88吸附性能的研究
- Adsorption of Escherichia coli K88 on Cu2+-loaded montmorillonite
- 基金项目:教育部新世纪优秀人才支持计划项目(No.NCET-06-0913)
- 郭彤
- 首都师范大学生命科学学院, 北京 100048
- 朱宝长
- 首都师范大学生命科学学院, 北京 100048
- 摘要:以蒙脱石(MMT)和硫酸铜为主要原料,制备了载铜蒙脱石(MMT-Cu),并对MMT-Cu吸附大肠杆菌K88的能力进行比较研究.结果表明:MMT和MMT-Cu对大肠杆菌K88均有较强的吸附作用,但载铜后蒙脱石吸附大肠杆菌的能力明显增强.细菌与吸附材料作用90min后可达到吸附平衡.介质pH值、离子强度和吸附温度对MMT和MMT-Cu吸附细菌的能力均有不同程度的影响.
- Abstract:The adsorption capacity of Cu2+-loaded montmorillonite(MMT-Cu) for Escherichia coli K88 was investigated and compared to the adsorption of E.coli K88 on montmorillonite alone(MMT).MMT-Cu was prepared from MMTand CuSO4.Both MMTand MMT-Cu had a strong adsorption capacity for E.coli K88,but the adsorptive capacity of MMT-Cu for E.coli K88 was higher than that of MMT.The adsorption processes between E.coli K88 and either MMTor MMT-Cu reached equilibrium after 90 mins.Temperature,pH,and ionic strength in the medium affected the adsorptive capacities of MMTand MMT-Cu.
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