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纳米伊/蒙黏土对水体中重金属的吸附去除效果

张兰河 苑亚会 颜增光 周友亚 张超艳 黄岩 徐猛

张兰河, 苑亚会, 颜增光, 周友亚, 张超艳, 黄岩, 徐猛. 纳米伊/蒙黏土对水体中重金属的吸附去除效果[J]. 环境科学研究, 2016, 29(1): 115-123.
引用本文: 张兰河, 苑亚会, 颜增光, 周友亚, 张超艳, 黄岩, 徐猛. 纳米伊/蒙黏土对水体中重金属的吸附去除效果[J]. 环境科学研究, 2016, 29(1): 115-123.
ZHANG Lanhe, YUAN Yahui, YAN Zengguang, ZHOU Youya, ZHANG Chaoyan, HUANG Yan, XU Meng. Application of Nano Illite/Smectite Clay for Adsorptive Removal of Metals in Water[J]. Research of Environmental Sciences, 2016, 29(1): 115-123.
Citation: ZHANG Lanhe, YUAN Yahui, YAN Zengguang, ZHOU Youya, ZHANG Chaoyan, HUANG Yan, XU Meng. Application of Nano Illite/Smectite Clay for Adsorptive Removal of Metals in Water[J]. Research of Environmental Sciences, 2016, 29(1): 115-123.

纳米伊/蒙黏土对水体中重金属的吸附去除效果

基金项目: 国家自然科学基金项目(41271492);中国环境科学研究院环境基准与风险评估国家重点实验室开放课题(SKLECRA2014OFP07);国家科技支撑计划项目(2014BAD14B02)

Application of Nano Illite/Smectite Clay for Adsorptive Removal of Metals in Water

  • 摘要: 为明确纳米伊/蒙黏土(下称伊/蒙黏土)作为修复材料在去除水体重金属方面的应用潜力,研究了伊/蒙黏土对水体中Ni2+、Cu2+和Cd2+的去除效果与吸附规律,并通过小麦水培试验分析伊/蒙黏土降低水体重金属在小麦地上部分的累积和缓解重金属对小麦的毒害效应等效果. 结果表明:伊/蒙黏土可以吸附去除水体中的Ni2+、Cu2+和Cd2+,当水体中ρ(Ni2+)、ρ(Cu2+)和ρ(Cd2+)分别为5、10、2 mg/L时,添加2%(以w计)的伊/蒙黏土对3种重金属的去除率均达到95%以上. 伊/蒙黏土对重金属的吸附等温线符合Langmuir方程,对Ni2+、Cu2+和Cd2+的理论最大吸附量分别为2.13、8.52和1.56 mg/g. 在培养液中添加2%伊/蒙黏土可降低小麦对Ni2+、Cu2+和Cd2+的累积富集,缓解重金属对小麦生长的毒害效应. 研究显示,纳米伊/蒙黏土可有效去除水体中的Ni2+、Cu2+和Cd2+,并缓解其对小麦的毒性,因此其在修复水体重金属污染、恢复水环境生态功能方面具有潜在的应用前景.

     

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出版历程
  • 收稿日期:  2015-06-22
  • 修回日期:  2015-09-30
  • 刊出日期:  2016-01-25

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