电氧化法和紫外/电氧化法去除阿特拉津性能的影响因素：动力学、长期稳定性和毒性

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere Pub Date : 2025-02-13 DOI:10.1016/j.chemosphere.2025.144187

Phattaraphol Boontham, Songkeart Phattarapattamawong

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引用次数: 0

摘要

研究了不同操作条件下电氧化（EO）和紫外/电氧化（UV/EO）对阿特拉津（ATZ）的去除效果。由于对ATZ的协同作用，UV/EO法去除效果最好，其次是UV/氯法、EO法、UV辐照法和氯化法。UV/EO对ATZ的去除率达到90%时，其能耗与EO相似，但其去除率比EO快1.8倍。硼掺杂金刚石（BDD）对ATZ的去除率高于尺寸稳定阳极（DSA），并且在处理50个循环次数（100 h）后，BDD的性能保持稳定。EO和UV/EO对ATZ的去除率随着电流密度和ph的增加而提高。EO和UV/EO对ATZ的去除率与NaCl浓度（300-1000 mg.L−1）无关。HO•对ATZ的去除起主要作用，而RCS的作用较小。HO•与ATZ的二级反应速率常数（kATZ−HO•）为1.36 × 109 M−1s−1。虽然植物毒性是ATZ的敏感终点，但对水杨树（Ipomoea aquatica）和水稻（Oryza sativa L., Khao Dawk Mali 105）种子萌发的抑制作用不同。UV/EO法对ATZ的脱毒效果最好。经UV/EO处理后的水杨树（Ipomoea aquatica）和稻谷（Oryza sativa L., Khao Dawk Mali 105）种子的萌发指数等于或大于对照。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influencing factors on performance of electro-oxidation and UV/electro-oxidation for removal of atrazine: Kinetics, long-term stability and toxicity

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Influencing factors on performance of electro-oxidation and UV/electro-oxidation for removal of atrazine: Kinetics, long-term stability and toxicity

Performance of electro-oxidation (EO) and UV/electro-oxidation (UV/EO) on atrazine (ATZ) removal was investigated under various operating factors. Because of synergistic effect on ATZ removal, UV/EO was the most effective process, followed by UV/chlorine, EO, UV irradiation, and chlorination, respectively. Although the energy consumption of UV/EO for 90% removal was similar to that of EO, UV/EO removed ATZ 1.8 times faster than EO. Boron doped diamond (BDD) exhibited greater ATZ removal than dimensionally stable anode (DSA), and performance of BDD was stable for treatment of 50 cycle times (100 h). Performance of EO and UV/EO on ATZ removal increased with higher current density and low pH. ATZ removal by EO and UV/EO was independent to NaCl concentrations (300–1000 mg.L⁻¹). HO• played a major role on ATZ removal, while the role of RCS was minor. The 2nd-order reaction rate constant of HO• with ATZ (

k_{A T Z - H O •}

) was 1.36 × 10⁹ M⁻¹s⁻¹. Although phytotoxicity was a sensitive endpoint to ATZ, different inhibition on germination of Ipomoea aquatica and Oryza sativa L. (Khao Dawk Mali 105) seeds was observed. UV/EO was the most effective process for ATZ detoxication. Germination index of Ipomoea aquatica and Oryza sativa L. (Khao Dawk Mali 105) seeds for samples treated by UV/EO was equivalent or greater than the control sample.

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来源期刊

Chemosphere 环境科学-环境科学

CiteScore

15.80

自引率

8.00%

发文量

4975

审稿时长

3.4 months

期刊介绍： Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.