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联合改性污泥吸附剂去除废水中铬(Ⅵ)

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刘蕾, 付临汝, 杜馨, 张立国, 吴宏海, 肖羽堂. 联合改性污泥吸附剂去除废水中铬(Ⅵ)[J]. 环境化学, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
引用本文: 刘蕾, 付临汝, 杜馨, 张立国, 吴宏海, 肖羽堂. 联合改性污泥吸附剂去除废水中铬(Ⅵ)[J]. 环境化学, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
shu
LIU Lei, FU Linru, DU Xin, ZHANG Liguo, WU Honghai, XIAO Yutang. Removal of Cr(Ⅵ) from wastewater by sludge-based adsorbents with combined modification[J]. Environmental Chemistry, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
Citation: LIU Lei, FU Linru, DU Xin, ZHANG Liguo, WU Honghai, XIAO Yutang. Removal of Cr(Ⅵ) from wastewater by sludge-based adsorbents with combined modification[J]. Environmental Chemistry, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
shu

联合改性污泥吸附剂去除废水中铬(Ⅵ)

  • 1.

    东莞理工学院, 生态环境与建筑工程学院, 东莞, 523808;

  • 2.

    华南师范大学, 化学与环境学院, 广州, 510006;

  • 3.

    广州市市政职业学校, 广州, 510500

  • 基金项目:

    国家自然科学基金（41372050），广东省自然科学基金（2016A030313432），广东省高校优秀青年创新人才培养计划资助项目（2012LYM_0050）和广东高校化工清洁生产与绿色化学品工程技术开发中心项目（201405）资助.

Removal of Cr(Ⅵ) from wastewater by sludge-based adsorbents with combined modification

  • 1.

    School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, China;

  • 2.

    School of Chemistry and Environment. South China Normal University, Guangzhou, 510006, China;

  • 3.

    Guanzhou Municipal Vocational College, Guangzhou, 510500, China

  • Fund Project: Supported by National Natural Science Foundation of China (41372050), Natural Science Foundation of Guangdong province (2016A030313432), Outstanding Young Innovative Talent Training Plan of Guangdong Universities (2012LYM_0050) and Opening Fund of Engineering Research Center for Chemical Industry Cleaner Production of Guangdong Universities (201405).

  • 摘要: 以城市污水厂脱水污泥为原料，分别经物理活化、物理与化学活化相结合的方法制备污泥基吸附剂样品，通过BET表面积分析、扫描电镜（SEM）、傅里叶红外光谱分析等对污泥吸附剂性质进行了表征，对比研究了不同改性方法制备的污泥基吸附剂对Cr（Ⅵ）的去除性能.结果表明，经过NaOH联合改性的污泥吸附剂W6对Cr（Ⅵ）吸附性能最好，其次为HNO3联合改性的污泥吸附剂样品W4，污泥吸附剂去除Cr（Ⅵ）的最佳pH值为2.5.对于样品W4、W6来说，室温下（25℃）其吸附行为更符合Langmuir等温吸附模型，说明这两种吸附剂对Cr（Ⅵ）吸附都主要以单分子层形式吸附为主.改性污泥吸附剂样品均较适合准二级动力学模型，其相关系数均达到了0.99以上.因此，物理与化学联合改性方法可以显著改善污泥吸附剂对Cr（Ⅵ）的吸附性能.
    Abstract: Dewatered sludge from a municipal wastewater treatment plant (WWTP) was used to prepare sludge-based adsorbents (SBAs) by means of physical activation, and the combination of physical and chemical activation with the addition of foaming agent. The SBA samples were characterized using BET surface area analysis, scanning electron microscopy (SEM), FT-IR, and the effects of different modification methods on Cr(Ⅵ) removal efficiency were investigated comparatively. The results showed that the SBA sample (W6) by the combined modification with NaOH achieved the highest Cr(Ⅵ) removal rate, follewed by is the SBA sample (W4) by combined modification with HNO3. The optimum pH for Cr(Ⅵ) removal was 2.5. At 25℃, the Cr(Ⅵ) removal for SBA samples of W6 and W4 were well fitted with the Langmuir isotherm model, which indicated that monolayer adsorption was the main adsorption process. The adsorption kinetic data were well fitted with the pseudo second-order model for all SBA samples, and the correlation coefficients were all over 0.99. Therefore, the combination of physical activation and chemical activation for preparing SBAs can improve the adsorption properties for Cr(Ⅵ).
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  • [1] 郑广宏, 肖方. 含Cr(Ⅵ)电镀废水治理技术研究进展[J]. 工业用水与废水, 2008, 39(5):11-14.

    ZHENG G H, XIAO F. Research progress of Cr(Ⅵ) containing electroplating wastewater treatment[J]. Industrial Water & Wastewater, 2008, 39(5):11-14(in Chinese).

    [2] GU L, WEN N, GUO H Q, et al. Adsorption and Fenton-like degradation of naphthalene dye intermediate on sewage sludge derived porous carbon[J]. Hazard Material, 2013, 246-247:145-153.
    [3] 叶锦韶, 尹华, 彭辉, 等. 生物吸附剂的制备及其对铬的吸附性能[J]. 环境化学, 2002, 21(2):144-148.

    YE J S, YIN H, PENG H, et al. Study on the preparation of the biosorbent and the adsorption efficiency to the heavy metal chromium[J]. Environmental Chemistry, 2002, 21(2):144-148(in Chinese).

    [4] 尹军,谭学军. 污水污泥处理处置与资源化利用[M]. 北京:化学工业出版社,2004. YIN J, TAN X J. Treatment, disposal and resource utilization of municipal sewage sludge[M]. Beijing:Chemical Industry Press,2007(in Chinese).
    [5] YANG C P, WANG J Q, LEI M, et al. Biosorption of zinc(Ⅱ) from aqueous solution by dried activated sludge[J].Journal of Environmental Sciences, 2010, 22(5):675-680.
    [6] ROS A, LILLO-RODENAS M A, CANALS-BATLLE C, et al. A new generation of sludge-based adsorbents for H2S abatement at room temperature[J]. Environmental Science & Technology, 2007, 41:4375-4381.
    [7]
    [8] 刘慧君,尹文霞,张立国,等. 碳氮共掺杂污泥基吸附剂去除水中Cr(Ⅵ)的实验研究[J]. 环境工程学报, 2016, 10(8):4147-4152.

    LIU H J, YIN W X, ZHANG L G, et al. Adsorptive removal of Cr(Ⅵ) from water by C-N-codoped sludge-based adsorbents[J]. Chinese Journal of Environmental Engineering, 2016, 10(8):4147-4152(in Chinese).

    [9] SMITH K M, FOWLER G D, PULLKET S, et al. Sewage sludge-based adsorbents:A review of their production, properties and use in water treatment applications[J]. Water Research, 2009, 43:2569-2594.
    [10] JINDAROM C, MEEYOO V, KITIYANAN B, et al. Surface characterization and dye adsorptive capacities of char obtained from pyrolysis/gasification of sewage sludge[J]. Chemical Engineering Journal, 2007, 133(1-3):239-246.
    [11] ZHAI Y B, WEI X X, ZENG G M, et al. Study of adsorbent derived from sewage sludge for the removal of Cd2+, Ni2+ in aqueous solutions[J]. Sep. Purif. Technol., 2004, 38:191-196.
    [12] 包汉峰, 杨维薇, 张立秋, 等. 污泥基活性炭去除水中重金属离子效能与动力学研究[J].中国环境科学, 2013, 33(1):69-74.

    BAO H F, YANG W W, ZHANG L Q, et al. Efficiency and kinetics of heavy metal removal from water by sludge-based activated carbon[J]. China Environmental Science, 2013, 33(1):69-74(in Chinese).

    [13] 马宏瑞, 黄宁选, 张景飞, 等. 泥炭对溶液中铬的吸附及其在制革废水处理中的应用[J]. 环境化学, 2003, 22(6):596-600.

    MA H R, HUANG N X, ZHANG J F, et al. Cr(Ⅲ) adsorption from aqueous solution by peat and its application to tannery wastewater[J]. Environmental Chemistry, 2003, 22(6):596-600(in Chinese).

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  • 收稿日期:  2018-04-24
  • 刊出日期:  2018-12-15
刘蕾, 付临汝, 杜馨, 张立国, 吴宏海, 肖羽堂. 联合改性污泥吸附剂去除废水中铬(Ⅵ)[J]. 环境化学, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
引用本文: 刘蕾, 付临汝, 杜馨, 张立国, 吴宏海, 肖羽堂. 联合改性污泥吸附剂去除废水中铬(Ⅵ)[J]. 环境化学, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
shu
LIU Lei, FU Linru, DU Xin, ZHANG Liguo, WU Honghai, XIAO Yutang. Removal of Cr(Ⅵ) from wastewater by sludge-based adsorbents with combined modification[J]. Environmental Chemistry, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
Citation: LIU Lei, FU Linru, DU Xin, ZHANG Liguo, WU Honghai, XIAO Yutang. Removal of Cr(Ⅵ) from wastewater by sludge-based adsorbents with combined modification[J]. Environmental Chemistry, 2018, 37(12): 2596-2602. doi: 10.7524/j.issn.0254-6108.2018042403
shu

联合改性污泥吸附剂去除废水中铬(Ⅵ)

  • 1.  东莞理工学院, 生态环境与建筑工程学院, 东莞, 523808;
  • 2.  华南师范大学, 化学与环境学院, 广州, 510006;
  • 3.  广州市市政职业学校, 广州, 510500
  • 收稿日期:  2018-04-24
基金项目:

国家自然科学基金（41372050），广东省自然科学基金（2016A030313432），广东省高校优秀青年创新人才培养计划资助项目（2012LYM_0050）和广东高校化工清洁生产与绿色化学品工程技术开发中心项目（201405）资助.

摘要: 以城市污水厂脱水污泥为原料，分别经物理活化、物理与化学活化相结合的方法制备污泥基吸附剂样品，通过BET表面积分析、扫描电镜（SEM）、傅里叶红外光谱分析等对污泥吸附剂性质进行了表征，对比研究了不同改性方法制备的污泥基吸附剂对Cr（Ⅵ）的去除性能.结果表明，经过NaOH联合改性的污泥吸附剂W6对Cr（Ⅵ）吸附性能最好，其次为HNO3联合改性的污泥吸附剂样品W4，污泥吸附剂去除Cr（Ⅵ）的最佳pH值为2.5.对于样品W4、W6来说，室温下（25℃）其吸附行为更符合Langmuir等温吸附模型，说明这两种吸附剂对Cr（Ⅵ）吸附都主要以单分子层形式吸附为主.改性污泥吸附剂样品均较适合准二级动力学模型，其相关系数均达到了0.99以上.因此，物理与化学联合改性方法可以显著改善污泥吸附剂对Cr（Ⅵ）的吸附性能.

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