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污泥基活性炭催化臭氧氧化对氯苯甲酸效能

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李璐, 封莉, 张立秋. 污泥基活性炭催化臭氧氧化对氯苯甲酸效能[J]. 环境工程学报, 2014, 8(9): 3613-3619.
引用本文: 李璐, 封莉, 张立秋. 污泥基活性炭催化臭氧氧化对氯苯甲酸效能[J]. 环境工程学报, 2014, 8(9): 3613-3619.
shu
Li Lu, Feng Li, Zhang Liqiu. Ozonation degradation of para-chlorobenzoic acid by sludge-corncob activated carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(9): 3613-3619.
Citation: Li Lu, Feng Li, Zhang Liqiu. Ozonation degradation of para-chlorobenzoic acid by sludge-corncob activated carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(9): 3613-3619.
shu

污泥基活性炭催化臭氧氧化对氯苯甲酸效能

  • 1.

    北京林业大学环境科学与工程学院, 北京市水体污染源控制技术重点实验室, 北京 100083

  • 基金项目:

    国家自然科学基金资助项目（51178046）

    环保公益性行业科研专项（201109041）

  • 中图分类号: X703

Ozonation degradation of para-chlorobenzoic acid by sludge-corncob activated carbon

  • 1.

    Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China

  • Fund Project:

  • 摘要: 以城市污水处理厂剩余污泥和玉米芯为原料，用氯化锌活化法制备出污泥基活性炭（SCAC），研究了其催化臭氧氧化去除水中对氯苯甲酸（p-CBA）的效能和机理，同时，考察了臭氧浓度、SCAC投量、p-CBA初始浓度以及自由基抑制剂叔丁醇的加入对SCAC催化活性的影响。实验结果表明，SCAC的加入可以显著提高臭氧对 p-CBA的氧化去除效果，在反应初期尤为明显，反应1.0 min时p-CBA的去除率由单独臭氧氧化的26.1%提高到SCAC催化臭氧氧化的60.2%。SCAC催化臭氧氧化对p-CBA的去除率随臭氧浓度的增加和p-CBA初始浓度的减小而增加。此外，在一定范围内增加催化剂的投量可以增加p-CBA的去除率。叔丁醇的加入显著减弱了SCAC催化臭氧氧化降解p-CBA的效能，表明SCAC催化臭氧氧化反应的主要活性物种为羟基自由基（·OH）。
    Abstract: Sludge-corncob activated carbon (SCAC) was prepared from sewage sludge and corncob with ZnCl2 as an activation regent. The removal efficiency of para-chlorobenzoic acid (p-CBA) by SCAC catalytic ozonation and its mechanism were discussed. The influences of ozone concentration, SCAC dosage, initial concentration of p-CBA and a radical scavenger tert-butyl alcohol (TBA) on the removal of p-CBA were also studied. The results showed that SCAC/O3 process, compared with sole ozonation, significantly increased the removal efficiency of p-CBA, especially in the early period of reaction. The removal efficiency of p-CBA by SCAC/O3 process reached 60.2% within the first 1 min, while only 26.1% by sole ozonation. Under the experimental conditions of the present study, the removal efficiency of p-CBA by SCAC/O3 treatment increased with the ozone concentration increasing and the initial concentration of p-CBA decreasing. Through the result, it is proved that increased SCAC dosage in a certain range can improve the removal efficiency of p-CBA. The presence of TBA greatly inhibited the degradation of p-CBA, indicating that hydroxyl radical (·OH) was the major active species during the SCAC induced catalytic ozonation.
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  • [1] 竹湘锋, 徐新华, 王天聪. Fe(Ⅲ)/O3体系对草酸的催化氧化. 浙江大学学报,2004, 31(3): 322-325 Zhu X.F., Xue X.H., Wang T.C. Fe(Ⅲ)-catalyzed ozonization of oxalic acid. Journal of Zhejiang University,2004, 31(3): 322-325(in Chinese)
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出版历程
  • 收稿日期:  2013-09-23
  • 刊出日期:  2014-09-04
李璐, 封莉, 张立秋. 污泥基活性炭催化臭氧氧化对氯苯甲酸效能[J]. 环境工程学报, 2014, 8(9): 3613-3619.
引用本文: 李璐, 封莉, 张立秋. 污泥基活性炭催化臭氧氧化对氯苯甲酸效能[J]. 环境工程学报, 2014, 8(9): 3613-3619.
shu
Li Lu, Feng Li, Zhang Liqiu. Ozonation degradation of para-chlorobenzoic acid by sludge-corncob activated carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(9): 3613-3619.
Citation: Li Lu, Feng Li, Zhang Liqiu. Ozonation degradation of para-chlorobenzoic acid by sludge-corncob activated carbon[J]. Chinese Journal of Environmental Engineering, 2014, 8(9): 3613-3619.
shu

污泥基活性炭催化臭氧氧化对氯苯甲酸效能

  • 1. 北京林业大学环境科学与工程学院, 北京市水体污染源控制技术重点实验室, 北京 100083
  • 收稿日期:  2013-09-23
基金项目:

国家自然科学基金资助项目（51178046）

环保公益性行业科研专项（201109041）

摘要: 以城市污水处理厂剩余污泥和玉米芯为原料，用氯化锌活化法制备出污泥基活性炭（SCAC），研究了其催化臭氧氧化去除水中对氯苯甲酸（p-CBA）的效能和机理，同时，考察了臭氧浓度、SCAC投量、p-CBA初始浓度以及自由基抑制剂叔丁醇的加入对SCAC催化活性的影响。实验结果表明，SCAC的加入可以显著提高臭氧对 p-CBA的氧化去除效果，在反应初期尤为明显，反应1.0 min时p-CBA的去除率由单独臭氧氧化的26.1%提高到SCAC催化臭氧氧化的60.2%。SCAC催化臭氧氧化对p-CBA的去除率随臭氧浓度的增加和p-CBA初始浓度的减小而增加。此外，在一定范围内增加催化剂的投量可以增加p-CBA的去除率。叔丁醇的加入显著减弱了SCAC催化臭氧氧化降解p-CBA的效能，表明SCAC催化臭氧氧化反应的主要活性物种为羟基自由基（·OH）。

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