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改性污泥活性炭对水中镉离子的吸附性能

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何慧军, 杨春平, 罗胜联, 郑颖, 刘莉华. 改性污泥活性炭对水中镉离子的吸附性能[J]. 环境工程学报, 2012, 6(11): 4034-4040.
引用本文: 何慧军, 杨春平, 罗胜联, 郑颖, 刘莉华. 改性污泥活性炭对水中镉离子的吸附性能[J]. 环境工程学报, 2012, 6(11): 4034-4040.
shu
He Huijun, Yang Chunping, Luo Shenglian, Zheng Ying, Liu Lihua. Adsorption of Cd(Ⅱ) from aqueous solution by modified activated carbon made from activated sludge[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4034-4040.
Citation: He Huijun, Yang Chunping, Luo Shenglian, Zheng Ying, Liu Lihua. Adsorption of Cd(Ⅱ) from aqueous solution by modified activated carbon made from activated sludge[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4034-4040.
shu

改性污泥活性炭对水中镉离子的吸附性能

  • 1.

    南昌航空大学化学与环境工程学院, 南昌 330063

  • 2.

    浙江省固体废物处理与资源化重点实验室, 浙江工商大学环境科学与工程学院, 杭州 310018

  • 3.

    湖南大学环境科学与工程学院, 长沙 410082

  • 基金项目:

    国家自然科学基金资助项目(51278464)

  • 中图分类号: X703

Adsorption of Cd(Ⅱ) from aqueous solution by modified activated carbon made from activated sludge

  • 1.

    School of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China

  • 2.

    Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China

  • 3.

    College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • Fund Project:

  • 摘要: 以城市污水处理厂的剩余污泥为原料,氯化锌为活化剂制备污泥活性炭,对一部分污泥活性炭用6.0 mol/L的硝酸进行改性,并研究了未改性和改性的污泥活性炭对Cd2+的吸附行为的影响。结果表明,在pH为5.0、Cd2+初始浓度为100 mg/L、吸附剂投加量为2.0 g/L、反应温度为25℃时,未改性的污泥活性炭吸附容量为8.45 mg/g,硝酸改性的污泥活性炭吸附容量达到了23.35 mg/g。改性和未改性的污泥活性炭对Cd2+都有较好的吸附容量,硝酸改性大幅度提高了污泥活性炭对Cd2+的吸附性能。常温下改性污泥活性炭对Cd2+的吸附符合Langmuir吸附等温式。
    Abstract: Activated carbon was prepared from excessive sludge from municipal wastewater treatment plant, and zinc chloride was used as the activation reagent. The activated carbon from sludge was also treated using 6.0 mol/L nitric acid to prepare modified activated carbon. The performances of the two types of activated carbon for Cd2+ adsorption were compared. Results show that the adsorption capacity of the unmodified activated carbon and modified activated carbon was 8.45 and 23.35 mg of Cd2+ per g of activated carbon, respectively at a pH of 5.0, an initial concentration of Cd2+ of 100 mg/L, and a dosage of activated carbon of 2.0 g/L. Therefore, these two types of activated carbon had good adsorption capacities, and the modification by nitric acid greatly improved the adsorption performance for Cd2+. At room temperature, the adsorption of Cd2+ by the modified sludge activated carbon accords with the Langmuir equation pretty well.
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出版历程
  • 收稿日期:  2011-12-16
  • 刊出日期:  2012-11-09
何慧军, 杨春平, 罗胜联, 郑颖, 刘莉华. 改性污泥活性炭对水中镉离子的吸附性能[J]. 环境工程学报, 2012, 6(11): 4034-4040.
引用本文: 何慧军, 杨春平, 罗胜联, 郑颖, 刘莉华. 改性污泥活性炭对水中镉离子的吸附性能[J]. 环境工程学报, 2012, 6(11): 4034-4040.
shu
He Huijun, Yang Chunping, Luo Shenglian, Zheng Ying, Liu Lihua. Adsorption of Cd(Ⅱ) from aqueous solution by modified activated carbon made from activated sludge[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4034-4040.
Citation: He Huijun, Yang Chunping, Luo Shenglian, Zheng Ying, Liu Lihua. Adsorption of Cd(Ⅱ) from aqueous solution by modified activated carbon made from activated sludge[J]. Chinese Journal of Environmental Engineering, 2012, 6(11): 4034-4040.
shu

改性污泥活性炭对水中镉离子的吸附性能

  • 1.  南昌航空大学化学与环境工程学院, 南昌 330063
  • 2.  浙江省固体废物处理与资源化重点实验室, 浙江工商大学环境科学与工程学院, 杭州 310018
  • 3.  湖南大学环境科学与工程学院, 长沙 410082
  • 收稿日期:  2011-12-16
基金项目:

国家自然科学基金资助项目(51278464)

摘要: 以城市污水处理厂的剩余污泥为原料,氯化锌为活化剂制备污泥活性炭,对一部分污泥活性炭用6.0 mol/L的硝酸进行改性,并研究了未改性和改性的污泥活性炭对Cd2+的吸附行为的影响。结果表明,在pH为5.0、Cd2+初始浓度为100 mg/L、吸附剂投加量为2.0 g/L、反应温度为25℃时,未改性的污泥活性炭吸附容量为8.45 mg/g,硝酸改性的污泥活性炭吸附容量达到了23.35 mg/g。改性和未改性的污泥活性炭对Cd2+都有较好的吸附容量,硝酸改性大幅度提高了污泥活性炭对Cd2+的吸附性能。常温下改性污泥活性炭对Cd2+的吸附符合Langmuir吸附等温式。

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