灌溉排水学报2026，Vol.45Issue(7)：174-180,7.DOI:10.13522/j.cnki.ggps.2026045
电化学原位生成的高铁物种体系去除养殖废水中的磺胺甲恶唑效果研究
Electrochemically generated ferric iron for efficient removal of sulfamethoxazole from aquaculture wastewater
摘要
Abstract
[Objective]The overuse of antibiotics in livestock industry has resulted in elevated antibiotic residues in aquaculture wastewater,which cannot be effectively removed by conventional treatments such as adsorption and activated sludge.This paper develops an in situ electrochemical ferric iron(E/Fe(Ⅲ))generation system to degrade sulfamethoxazole(SMX)in aquaculture wastewater.[Method]We experimentally investigated the effects of electrode type,buffer type,buffer concentration,initial Fe3+concentration,pH,and voltage of the E/Fe(Ⅲ)system on SMX degradation.Radical quenchers were used to identify reactive oxygen species involved in the degradation and quantify their relative contributions.The toxicity of degradation by-products and the system's detoxification efficacy were predicted and evaluated using ECOSAR.We also evaluated the performance of the E/Fe(Ⅲ)system for degrading SMX in real water bodies.[Result]In a 0.1 mol/L borate buffer solution with an initial SMX concentration of 10 mg/L,when voltage was 15 V,Fe3+concentration was 25 μmol/L Fe3+and pH=9,the degradation rate of SMX reached 90.36%in 120 minutes.In addition to ferric species,·OH,1O2,and·O2-all contributed to SMX degradation,with 1O2 contributing the most.Our results showed that the toxicity of the degradation by-products was significantly lower than that of SMX,and that stable degradation was achieved for various types of real wastewater.[Conclusion]The E/Fe(Ⅲ)system is an environmentally friendly and sustainable technology for removing sulfamethoxazole in real aquaculture wastewaters.关键词
原位生成/高铁物种/活性氧/磺胺甲恶唑Key words
in-situ generation/high-valent iron/reactive oxygen species/sulfamethoxazole分类
资源环境引用本文复制引用
林瑜航,邓志康,张亚楠,张祖麟..电化学原位生成的高铁物种体系去除养殖废水中的磺胺甲恶唑效果研究[J].灌溉排水学报,2026,45(7):174-180,7.基金项目
浙江省自然科学基金联合基金资助项目(LLSSZ25B050001) （LLSSZ25B050001）
浙江省"尖兵领雁"研发攻关计划资助项目(2024SSYS0103) （2024SSYS0103）
