Persulfate activation with catalyst derived from iron-rich municipal sludge for atrazine degradation

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2025-05-06 DOI:10.1002/jctb.7885

Xirong Qiu, Shanjun Liu, Jingwei Geng, Shan Sun, Ran Wei, Yejing Zhang, Jianlin Zhang

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Abstract

BACKGROUND

Advanced oxidation technology based on persulfate has potential application in the treatment of refractory wastewater. However, due to the high cost of persulfate activation, the promotion of this technology is limited. Economical and efficient persulfate activators need to be developed.

RESULTS

A highly efficient persulfate activator was prepared based on iron-rich municipal sludge, which could realize resource utilization of sludge. The removal rate of atrazine could achieve 81.3% within 2 h, and the reaction conditions were atrazine concentration of 4 mg L⁻¹, sodium persulfate concentration of 110 mg L⁻¹, and activator concentration of 100 mg L⁻¹.

CONCLUSION

The prepared activators had good pore structures and contained iron complexes, which enabled the effective activation of sodium persulfate for atrazine degradation. The activators were relatively stable, had a wide pH application range, and their activation efficiency could be significantly improved by increasing the temperature. The generation path of free radical mainly based on sulfate radical was speculated, and the possible mechanism of persulfate activation was proposed. © 2025 Society of Chemical Industry (SCI).

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富铁污泥催化剂催化过硫酸盐降解阿特拉津

背景过硫酸盐深度氧化技术在处理难处理废水中具有潜在的应用前景。但由于过硫酸盐活化成本高，限制了该技术的推广。需要开发经济高效的过硫酸盐活化剂。结果以富铁城市污泥为原料制备了高效过硫酸盐活化剂，实现了污泥资源化利用。在阿特拉津浓度为4 mg L−1、过硫酸钠浓度为110 mg L−1、活化剂浓度为100 mg L−1的条件下，2 h内对阿特拉津的去除率可达81.3%。结论所制备的活化剂具有良好的孔隙结构和含铁配合物，可有效活化过硫酸钠降解阿特拉津。活化剂相对稳定，pH适用范围广，提高温度可显著提高活化剂的活化效率。推测了以硫酸盐自由基为主的自由基生成途径，并提出了过硫酸盐活化的可能机理。©2025化学工业学会（SCI）。

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.