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固定化硫酸盐还原菌处理含铊废水效果及其解毒机制

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张鸿郭, 熊静芳, 李猛, 庞博, 黄晓武, 陈迪云, 罗定贵, 王伟彤, 陈永亨. 固定化硫酸盐还原菌处理含铊废水效果及其解毒机制[J]. 环境化学, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
引用本文: 张鸿郭, 熊静芳, 李猛, 庞博, 黄晓武, 陈迪云, 罗定贵, 王伟彤, 陈永亨. 固定化硫酸盐还原菌处理含铊废水效果及其解毒机制[J]. 环境化学, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
shu
ZHANG Hongguo, XIONG Jingfang, LI Meng, PANG Bo, HUANG Xiaowu, CHEN Diyun, LUO Dinggui, WANG Weitong, CHEN Yongheng. Effect and detoxification mechanism for treating wastewater containing thallium by immobilized sulfate reducing bacteria[J]. Environmental Chemistry, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
Citation: ZHANG Hongguo, XIONG Jingfang, LI Meng, PANG Bo, HUANG Xiaowu, CHEN Diyun, LUO Dinggui, WANG Weitong, CHEN Yongheng. Effect and detoxification mechanism for treating wastewater containing thallium by immobilized sulfate reducing bacteria[J]. Environmental Chemistry, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
shu

固定化硫酸盐还原菌处理含铊废水效果及其解毒机制

  • 1.

    广州大学环境科学与工程学院, 广州, 510006;

  • 2.

    珠江三角洲水质安全与保护省部共建重点实验室, 广州, 510006;

  • 3.

    广东省放射性核素污染控制与资源化重点实验室, 广州, 510006

  • 基金项目:

    国家自然科学基金（51208022，41273100，41372248），广州市珠江科技新星项目（2011061），广州市科技计划项目（2017027），广州市教育局重大创新项目（13XT02）和广州大学高水平大学建设项目资助.

Effect and detoxification mechanism for treating wastewater containing thallium by immobilized sulfate reducing bacteria

  • 1.

    School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China;

  • 2.

    Key Laboratory for Water Quality Security and Protection in Pearl River Delta, Ministry of Education and Guangdong Province, Guangzhou, 510006, China;

  • 3.

    Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou, 510006, China

  • Fund Project: Supported by National Natural Science Foundation (51208022, 41273100, 41372248), New Technological Star Project of Pearl River (2011061), Science and Technology Program of Guangzhou (2017027), the Significant Innovation Project of Bureau Guangzhou Municipality (13XT02) and High Level University Construction Projects of Guangzhou City.

  • 摘要: 生物固定化是一种新型防控水源地水体重金属污染技术.实验采用固定化硫酸盐还原菌（SRB）处理含铊废水，并研究了SRB处理含铊废水的机理.研究结果表明，包埋后SRB仍能够保持较强活性，pH和接触时间对固定化SRB处理含铊废水具有较大影响，包埋小球pH耐受性较好，最适pH值是6，处理在720min达到饱和量.菌液包埋量和废水中硫酸根离子浓度对固定化处理含铊废水作用重要，处理量高达253.94 μg·g-1.采用EDS和XRD分析了反应体系中沉淀物的组成，表明溶液和小球沉淀物中均含有硫化铊，硫化铊沉淀是固定化SRB处理含铊废水过程中铊污染去除的重要机制，固定化SRB可有效防控水源地铊污染.
    Abstract: Biological immobilization is a new method for the prevention and control of heavy metal pollution in the water source areas. In this study, ilumobilized sulfate reducing bacteria (SRB) was used to treat wastewater containing thallium, and the main mechanism of thallium removal was studied. The results indicate that the SRB retained its activity after immobilization, and pH and contact time had great impact on thallium removal. The beads had great tolerance to pH change, and the optimum value is 6. Saturated amount was reached at 720 min. The amount of bacteria entrapped and concentration of sulfate in wastewater played key roles in the process of treating thallium by immobilized SRB, and the max treatment amount of thallium was up to 253.94 μg·g-1. The composition of precipitation in the immobilized SRB system was analyzed by energy dispersive spectrometer (EDS) and X-ray diffraction (XRD). It was revealed that thallium sulfide existed in the precipitation of the solution and beads. Precipitation of thallium sulfide was the important mechanism for thallium removal during the course of treating wastewater containing thallium by the beads of immobilized SRB. Immobilized SRB can effectively prevent and control thallium pollution in water source areas.
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  • 收稿日期:  2016-07-03
  • 刊出日期:  2017-03-15
张鸿郭, 熊静芳, 李猛, 庞博, 黄晓武, 陈迪云, 罗定贵, 王伟彤, 陈永亨. 固定化硫酸盐还原菌处理含铊废水效果及其解毒机制[J]. 环境化学, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
引用本文: 张鸿郭, 熊静芳, 李猛, 庞博, 黄晓武, 陈迪云, 罗定贵, 王伟彤, 陈永亨. 固定化硫酸盐还原菌处理含铊废水效果及其解毒机制[J]. 环境化学, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
shu
ZHANG Hongguo, XIONG Jingfang, LI Meng, PANG Bo, HUANG Xiaowu, CHEN Diyun, LUO Dinggui, WANG Weitong, CHEN Yongheng. Effect and detoxification mechanism for treating wastewater containing thallium by immobilized sulfate reducing bacteria[J]. Environmental Chemistry, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
Citation: ZHANG Hongguo, XIONG Jingfang, LI Meng, PANG Bo, HUANG Xiaowu, CHEN Diyun, LUO Dinggui, WANG Weitong, CHEN Yongheng. Effect and detoxification mechanism for treating wastewater containing thallium by immobilized sulfate reducing bacteria[J]. Environmental Chemistry, 2017, 36(3): 591-597. doi: 10.7524/j.issn.0254-6108.2017.03.2016070301
shu

固定化硫酸盐还原菌处理含铊废水效果及其解毒机制

  • 1.  广州大学环境科学与工程学院, 广州, 510006;
  • 2.  珠江三角洲水质安全与保护省部共建重点实验室, 广州, 510006;
  • 3.  广东省放射性核素污染控制与资源化重点实验室, 广州, 510006
  • 收稿日期:  2016-07-03
基金项目:

国家自然科学基金（51208022，41273100，41372248），广州市珠江科技新星项目（2011061），广州市科技计划项目（2017027），广州市教育局重大创新项目（13XT02）和广州大学高水平大学建设项目资助.

摘要: 生物固定化是一种新型防控水源地水体重金属污染技术.实验采用固定化硫酸盐还原菌（SRB）处理含铊废水，并研究了SRB处理含铊废水的机理.研究结果表明，包埋后SRB仍能够保持较强活性，pH和接触时间对固定化SRB处理含铊废水具有较大影响，包埋小球pH耐受性较好，最适pH值是6，处理在720min达到饱和量.菌液包埋量和废水中硫酸根离子浓度对固定化处理含铊废水作用重要，处理量高达253.94 μg·g-1.采用EDS和XRD分析了反应体系中沉淀物的组成，表明溶液和小球沉淀物中均含有硫化铊，硫化铊沉淀是固定化SRB处理含铊废水过程中铊污染去除的重要机制，固定化SRB可有效防控水源地铊污染.

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