工业水处理 ›› 2023, Vol. 43 ›› Issue (6): 22-31.

• 专论与综述 • 上一篇    下一篇

铁基生物炭活化过硫酸盐处理有机废水的研究进展

张洪涛1(), 刘涛2, 杨宗建3, 蔡书涵1, 王振昌1, 陈鹏1, 胡志军1, 张欣1,2,4()   

  1. 1. 浙江科技学院环境与资源学院, 浙江 杭州 310023
    2. 浙江山鹰纸业有限公司, 浙江 嘉兴 314305
    3. 浙江金昌特种纸股份有限公司, 浙江龙游 324404
    4. 东北石油大学, 黑龙江 大庆 163318
  • 收稿日期:2023-03-01 出版日期:2023-06-20 发布日期:2023-06-25
  • 作者简介:

    张洪涛(1996— ),硕士。电话:19106850675,E-mail:

    张欣,讲师。电话:15263346892,E-mail:

  • 基金资助:
    浙江省自然科学基金项目(LY21C160004); 浙江省科技厅省级重点研发计划项目(2021C02031)

Research progress on the treatment of organic wastewater by iron-based biochar activated persulfate

Hongtao ZHANG1(), Tao LIU2, Zongjian YANG3, Shuhan CAI1, Zhenchang WANG1, Peng CHEN1, Zhijun HU1, Xin ZHANG1,2,4()   

  1. 1. School of Environmental and Natural Resources,Zhejiang University of Science and Technology,Hangzhou 310023,China
    2. Zhejiang Shanying Paper Co. ,Ltd. ,Jiaxing 314305,China
    3. Zhejiang Jinchang Specialty Paper Co. ,Ltd. ,Longyou 324404,China
    4. Northeast Petroleum University,Daqing 163318,China
  • Received:2023-03-01 Online:2023-06-20 Published:2023-06-25

摘要:

环境中富集的各种有机污染物对生态系统和人体健康存在较大威胁。近年来,基于过硫酸盐(PS)的高级氧化技术(AOPs)因操作简单、成本较低且氧化还原能力强,在高效降解有机污染物方面展现出巨大潜力。铁基生物炭(Fe-biochar)由于具有吸附和催化的双重优势,在活化PS降解有机污染物领域得到了广泛应用。简述了Fe-biochar复合材料的制备方法,介绍了Fe-biochar活化PS过程的影响因素,分析了污染物降解过程中存在的反应机制。Fe-biochar不仅可以通过吸附作用去除污染物,还可以通过高效的电子转移来介导Fe-biochar/PS体系中自由基途径和非自由基途径对污染物进行降解。同时,对Fe-biochar的重复利用性和稳定性进行了讨论,提出了几种Fe-biochar高效再生的方法。最后对Fe-biochar用于活化PS降解有机污染物的实际应用进行了展望,以期为难降解有机污染物处理及生物质高值化利用提供参考。

关键词: 过硫酸盐, 铁基生物炭, 自由基, 非自由基

Abstract:

Various organic pollutants in the environment pose a great threat to ecosystem and human health. In recent years,advanced oxidation processes(AOPs) based on persulfate(PS) have shown great potential in the efficient removal of organic pollutants due to simple operation,low cost and high redox efficiency. Iron-based biochar(Fe-biochar),which has the dual advantages of adsorption and catalysis,has been widely used in the field of activating PS to degrade organic pollutants. The preparation method of Fe-biochar was summarized firstly. Various influencing factors in the Fe-biochar/PS process were introduced. The catalytic mechanism in the Fe-biochar/PS process was described on the point of adsorption,radical pathway,and non-radical pathway. In addition,the stability and reusability of Fe-biochar catalyst were discussed,and two efficient regeneration methods were put forward. Finally,the practical application of Fe-biochar as the catalyst for activating PS was prospected. It hopes to provide reference for degradation of refractory organic pollutants and high-valued utilization of biomass.

Key words: persulfate, iron-based biochar, free radicals, non-free radicals

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