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生物质电厂底渣对水溶液中Cu2+的吸附特性

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徐磊, 郑学博, 崔红标, 梁家妮, 陶志慧, 祝振球, 刘冰冰, 周静. 生物质电厂底渣对水溶液中Cu2+的吸附特性[J]. 环境化学, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
引用本文: 徐磊, 郑学博, 崔红标, 梁家妮, 陶志慧, 祝振球, 刘冰冰, 周静. 生物质电厂底渣对水溶液中Cu2+的吸附特性[J]. 环境化学, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
shu
XU Lei, ZHENG Xuebo, CUI Hongbiao, LIANG Jiani, TAO Zhihui, ZHU Zhenqiu, LIU Bingbing, ZHOU Jing. Adsorption of Cu2+ in water by biomass ash[J]. Environmental Chemistry, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
Citation: XU Lei, ZHENG Xuebo, CUI Hongbiao, LIANG Jiani, TAO Zhihui, ZHU Zhenqiu, LIU Bingbing, ZHOU Jing. Adsorption of Cu2+ in water by biomass ash[J]. Environmental Chemistry, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
shu

生物质电厂底渣对水溶液中Cu2+的吸附特性

  • 1.

    中国科学院南京土壤研究所, 南京, 210008;

  • 2.

    中国科学院土壤环境与污染修复重点实验室, 南京, 210008;

  • 3.

    中国科学院大学, 北京, 100049;

  • 4.

    江西省重金属污染生态修复工程技术研究中心, 南昌, 330096;

  • 5.

    国家红壤改良工程技术研究中心, 中国科学院红壤生态实验站, 鹰潭, 335211;

  • 6.

    安徽理工大学地球与环境学院, 淮南, 232001

  • 基金项目:

    国家“973”课题（2013CB934302），江西贵溪镉铜污染土壤修复技术示范（KFJ-EW-STS-016），赣鄱英才555工程，国家科技支撑计划课题（2015BAD05B01），国家自然科学基金重点项目（U1033004）资助.

Adsorption of Cu2+ in water by biomass ash

  • 1.

    Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China;

  • 2.

    Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Nanjing, 210008, China;

  • 3.

    University of Chinese Academy of Sciences, Beijing, 100049, China;

  • 4.

    Jiangxi Academy of Science. Jiangxi Engineering Research Center of Eco-Remedication of Heavy Metal Pollution, Nanchang, 330096, China;

  • 5.

    National engineering and Technology Research Center for Red Soil Improvement, Red Soil Ecological Experiment Station, Chinese Academy of Sciences, Liujiazhan Plantation, Yingtan, 335211, China;

  • 6.

    School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, China

  • Fund Project: Supported by the National Basic Research Program of China(2013CB934302), Demonstration of Remediation Technology of Cadmium and Copper Contaminated Soil in Guixi, Jiangxi(KFJ-EW-STS-016),Jiangxi Province Talent Project 555,National Science and Technology Support Plan(2015BAD05B01),National Natural Science Foundation of China(U1033004).

  • 摘要: 本实验选用安徽某生物质发电厂燃烧炉底渣，通过研究吸附等温线、吸附时间以及电厂灰投加量和溶液初始pH对生物质灰吸附Cu2+的影响，以确定其对水溶液中Cu2+的吸附特性.结果表明，Cu2+初始浓度在50-100 mg·L-1范围内，Langmuir模型能很好地描述生物质电厂底渣对Cu2+的等温吸附规律，其理论饱和吸附量为20 mg·g-1，非常接近实际饱和吸附量19.45 mg·g-1.溶液初始pH值在2-6范围时，Cu2+的去除率随pH值的升高而增加，当pH在6附近时去除率最佳，接近100%.溶液Cu2+初始浓度为100 mg·L-1，体积为50 mL时，随生物质电厂底渣投加量增加，其对Cu2+的去除率上升，但去除效率下降，0.2 g左右可能是达到最佳去除效率和去除率的用量.溶液中Cu2+的去除率随吸附时间的增加而升高，用量越大达到吸附平衡的时间越短，但90 min左右时各个用量的去除率均趋于稳定.
    Abstract: In the experiment, biomass ash was selected as an adsorbent to investigate the effects of time, dosage and initial pH on the adsorption for Cu. Results showed that the Langmuir model could well fit the isothermal adsorption of Cu by biomass ash, and its calculated adsorption capacity (20 mg·g-1) was close to the experimental value (19.45mg·g-1). The removal rate of Cu2+ increased with the increase of initial pH value (2-8), and the removal rate (~100%) of Cu was the highest at pH~6. The removal rate of Cu2+ increased with the increase of the dosage, and the best removal efficiency for Cu was obtained with 0.2 g biomass ash. The removal rate of Cu2+ increased over time and adsorption reached equilibrium after 90 mins. Our results indicated biomass ash has strong adsorption capacity for Cu and could be used to remediating wastewater treatment.
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  • 收稿日期:  2015-12-11
  • 刊出日期:  2016-08-15
徐磊, 郑学博, 崔红标, 梁家妮, 陶志慧, 祝振球, 刘冰冰, 周静. 生物质电厂底渣对水溶液中Cu2+的吸附特性[J]. 环境化学, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
引用本文: 徐磊, 郑学博, 崔红标, 梁家妮, 陶志慧, 祝振球, 刘冰冰, 周静. 生物质电厂底渣对水溶液中Cu2+的吸附特性[J]. 环境化学, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
shu
XU Lei, ZHENG Xuebo, CUI Hongbiao, LIANG Jiani, TAO Zhihui, ZHU Zhenqiu, LIU Bingbing, ZHOU Jing. Adsorption of Cu2+ in water by biomass ash[J]. Environmental Chemistry, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
Citation: XU Lei, ZHENG Xuebo, CUI Hongbiao, LIANG Jiani, TAO Zhihui, ZHU Zhenqiu, LIU Bingbing, ZHOU Jing. Adsorption of Cu2+ in water by biomass ash[J]. Environmental Chemistry, 2016, 35(8): 1642-1648. doi: 10.7524/j.issn.0254-6108.2016.08.2015121101
shu

生物质电厂底渣对水溶液中Cu2+的吸附特性

  • 1.  中国科学院南京土壤研究所, 南京, 210008;
  • 2.  中国科学院土壤环境与污染修复重点实验室, 南京, 210008;
  • 3.  中国科学院大学, 北京, 100049;
  • 4.  江西省重金属污染生态修复工程技术研究中心, 南昌, 330096;
  • 5.  国家红壤改良工程技术研究中心, 中国科学院红壤生态实验站, 鹰潭, 335211;
  • 6.  安徽理工大学地球与环境学院, 淮南, 232001
  • 收稿日期:  2015-12-11
基金项目:

国家“973”课题（2013CB934302），江西贵溪镉铜污染土壤修复技术示范（KFJ-EW-STS-016），赣鄱英才555工程，国家科技支撑计划课题（2015BAD05B01），国家自然科学基金重点项目（U1033004）资助.

摘要: 本实验选用安徽某生物质发电厂燃烧炉底渣，通过研究吸附等温线、吸附时间以及电厂灰投加量和溶液初始pH对生物质灰吸附Cu2+的影响，以确定其对水溶液中Cu2+的吸附特性.结果表明，Cu2+初始浓度在50-100 mg·L-1范围内，Langmuir模型能很好地描述生物质电厂底渣对Cu2+的等温吸附规律，其理论饱和吸附量为20 mg·g-1，非常接近实际饱和吸附量19.45 mg·g-1.溶液初始pH值在2-6范围时，Cu2+的去除率随pH值的升高而增加，当pH在6附近时去除率最佳，接近100%.溶液Cu2+初始浓度为100 mg·L-1，体积为50 mL时，随生物质电厂底渣投加量增加，其对Cu2+的去除率上升，但去除效率下降，0.2 g左右可能是达到最佳去除效率和去除率的用量.溶液中Cu2+的去除率随吸附时间的增加而升高，用量越大达到吸附平衡的时间越短，但90 min左右时各个用量的去除率均趋于稳定.

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