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给水厂污泥对Hg(Ⅱ)的吸附性能

仇付国 夏鑫 王肖倩 吕华东

仇付国, 夏鑫, 王肖倩, 吕华东. 给水厂污泥对Hg(Ⅱ)的吸附性能[J]. 环境工程, 2023, 41(3): 34-41. doi: 10.13205/j.hjgc.202303005
引用本文: 仇付国, 夏鑫, 王肖倩, 吕华东. 给水厂污泥对Hg(Ⅱ)的吸附性能[J]. 环境工程, 2023, 41(3): 34-41. doi: 10.13205/j.hjgc.202303005
QIU Fuguo, XIA Xin, WANG Xiaoqian, LÜ Huadong. Hg(Ⅱ) ADSORPTION PERFORMANCE BY WATER TREATMENT RESIDUAL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 34-41. doi: 10.13205/j.hjgc.202303005
Citation: QIU Fuguo, XIA Xin, WANG Xiaoqian, LÜ Huadong. Hg(Ⅱ) ADSORPTION PERFORMANCE BY WATER TREATMENT RESIDUAL[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(3): 34-41. doi: 10.13205/j.hjgc.202303005

给水厂污泥对Hg(Ⅱ)的吸附性能

doi: 10.13205/j.hjgc.202303005
基金项目: 

国家自然科学基金资助项目(51278024)

详细信息
    作者简介:

    仇付国(1974-),男,工学博士,教授,主要研究方向为水处理理论与技术研究。qiufuguo@bucea.edu.cn

    通讯作者:

    仇付国(1974-),男,工学博士,教授,主要研究方向为水处理理论与技术研究。qiufuguo@bucea.edu.cn

Hg(Ⅱ) ADSORPTION PERFORMANCE BY WATER TREATMENT RESIDUAL

  • 摘要: 给水厂污泥具有较强的吸附能力,可作为从水溶液中去除重金属的潜在吸附剂。通过试验分析了给水厂污泥(WTR)作为吸附剂去除溶液中Hg(Ⅱ)时,pH值、Hg(Ⅱ)初始浓度、污泥粒径以及温度对Hg(Ⅱ)吸附性能的影响,确定了吸附过程的动力学及吸附等温模型,并探究了其吸附机理。结果表明:溶液pH值对给水厂污泥吸附Hg(Ⅱ)具有较大影响,当pH=8.0时吸附效果最佳。采用粒径较小的污泥有利于对Hg(Ⅱ)的吸附,污泥对Hg(Ⅱ)的吸附量随着初始浓度的增加而增加。给水厂污泥对Hg(Ⅱ)的吸附符合准二级动力学模型,平衡等温线符合Langmuir吸附等温模型,25℃条件下pH为7.0时污泥的饱和吸附量达到69.13 mg/g。升温有利于给水厂污泥对Hg(Ⅱ)的吸附。通过分析吸附前后污泥比表面积和微孔体积的变化发现,颗粒内扩散是给水厂污泥吸附Hg(Ⅱ)的限速步骤。
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出版历程
  • 收稿日期:  2021-12-20
  • 网络出版日期:  2023-05-26
  • 刊出日期:  2023-03-01

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