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活性污泥水热碳化法制备磁性炭及对水体Cd2+及Pb2+的去除

袁健 钱雅洁 薛罡 张权 李前 刘自豪 李贤英

袁健, 钱雅洁, 薛罡, 张权, 李前, 刘自豪, 李贤英. 活性污泥水热碳化法制备磁性炭及对水体Cd2+及Pb2+的去除[J]. 环境工程, 2020, 38(2): 55-62. doi: 10.13205/j.hjgc.202002007
引用本文: 袁健, 钱雅洁, 薛罡, 张权, 李前, 刘自豪, 李贤英. 活性污泥水热碳化法制备磁性炭及对水体Cd2+及Pb2+的去除[J]. 环境工程, 2020, 38(2): 55-62. doi: 10.13205/j.hjgc.202002007
YUAN Jian, QIAN Ya-jie, XUE Gang, ZHANG Quan, LI Qian, LIU Zi-hao, LI Xian-ying. REMOVAL OF CADMIUM AND LEAD IN WATER BY MAGNETIC CARBON PREPARED FROM ACTIVATED SLUDGE WITH HYDROTHERMAL CARBONIZATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 55-62. doi: 10.13205/j.hjgc.202002007
Citation: YUAN Jian, QIAN Ya-jie, XUE Gang, ZHANG Quan, LI Qian, LIU Zi-hao, LI Xian-ying. REMOVAL OF CADMIUM AND LEAD IN WATER BY MAGNETIC CARBON PREPARED FROM ACTIVATED SLUDGE WITH HYDROTHERMAL CARBONIZATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 55-62. doi: 10.13205/j.hjgc.202002007

活性污泥水热碳化法制备磁性炭及对水体Cd2+及Pb2+的去除

doi: 10.13205/j.hjgc.202002007
详细信息
    作者简介:

    袁健(1992-),男,硕士研究生,主要研究方向为污泥水热碳化以及水中重金属的去除。19802126531@126.com

    通讯作者:

    李贤英,女,博士,副教授,主要研究方向为功能性环境纳米材料。seanlee@dhu.edu.cn

REMOVAL OF CADMIUM AND LEAD IN WATER BY MAGNETIC CARBON PREPARED FROM ACTIVATED SLUDGE WITH HYDROTHERMAL CARBONIZATION

  • 摘要: 以含有FeSO4的活性污泥为原料,采用水热碳化法,在220℃,4 h条件下,制备得到磁性炭(Fe-SSBC),并实现污泥减量。以Cd2+和Pb2+为模型污染物,探究了Fe-SSBC的投加量、起始酸碱度对Cd2+和Pb2+吸附的影响以及吸附机理。采用元素分析(EA)、X射线能谱分析(EDS)、傅里叶红外光谱分析(FTIR)、比表面积(BET)、X射线光电子能谱分析(XPS)、磁滞回线对样品进行表征。研究结果表明:在投加量为0.2 g,pH为5的条件下,Fe-SSBC对Cd2+的吸附效果最好,在10 h后去除率接近100%;投加量为0.3 g,pH为6时,对Pb2+的吸附效果最佳,在8.5 h后Pb2+去除率接近100%。Fe-SSBC对Cd2+和Pb2+的吸附动力学拟合结果更符合准二级动力学模型,Langmuir吸附等温线模型能够更好地反映Cd2+和Pb2+在Fe-SSBC上的单分子层吸附,化学吸附为控制吸附过程,同时存在物理吸附。制备磁性炭在实现污泥减量的同时,具有有效去除水中Cd2+和Pb2+的作用。
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  • 收稿日期:  2018-12-12

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