电化学活化亚硫酸钙体系降解四环素的研究  

Electrochemical Activation of Calcium Sulfite System for Tetracycline Degradation

作　　者：王跃欣 徐强[1] 宫玉才 周延明 张贻江 唐首锋[2] Wang Yuexin;Xu Qiang;Gong Yucai;Zhou Yanming;Zhang Yijiang;Tang Shoufeng(Tangshan Jiahua Coal Chemical Co.,Ltd.,Hebei,063300;Hebei Key Laboratory of Heavy Metal Deep-remediation in Water and Resource Reuse,Yanshan University,Hebei,066004)

机构地区：[1]唐山佳华煤化工有限公司,河北063300 [2]河北省水体重金属深度修复与资源利用重点实验室、燕山大学,河北066004

出　　处：《当代化工研究》2024年第9期166-168,共3页Modern Chemical Research

摘　　要：本研究旨在研发一种高效的方法,用于处理水体中存在的四环素类抗生素,因其对公共卫生安全构成威胁。我们采用了电化学氧化法,具体是Electro/sulfite体系,其中以亚硫酸钙(CaSO3)作为还原剂和自由基前驱物,以成功分解四环素(TC)。研究结果表明,Electro/sulfite体系对TC的去除效果表现出协同作用,明显优于单独使用电化学或亚硫酸盐体系。通过自由基掩蔽实验的分析,我们确定了主要的活性物质为羟基自由基(·OH)和单线态氧(1O2),这两者在TC降解中起主导作用。此外,通过采用高性能液相色谱-质谱联用技术(HPLC-MS),我们推测了TC的降解途径,包括脱羟基、脱氨基、酰基反应和苯环开环反应等。最终,TC被完全氧化降解为无害的无机物质。这项研究为处理水体中存在的抗生素类污染物提供了一种高效的方法。This study aimed to develop an efficient method for the treatment of tetracycline antibiotics present in water,as they pose a threat to public health and safety.We employed an electrochemical oxidation method,specifically the Electro/sulfite system,using calcium sulfite(CaSO_(3))as a reducing agent and a precursor for free radicals to successfully degrade tetracycline(TC).The research results demonstrated that the Electro/sulfite system exhibited a synergistic effect in the removal of TC,significantly outperforming the standalone electrochemical or sulfite systems.Through free radical scavenging experiments,we identified the primary active species as hydroxyl radicals(·OH)and singlet oxygen(^(1)O_(2)),both playing a predominant role in TC degradation.Furthermore,by utilizing high-performance liquid chromatography-mass spectrometry(HPLC-MS),we hypothesized TC degradation pathways,including hydroxyl group removal,deamination,acyl reaction,and benzene ring opening reactions.Ultimately,TC was completely oxidized and degraded into harmless inorganic substances.This study provides an efficient approach for addressing the presence of antibiotic pollutants in water.

关 键 词：电化学 四环素 高级氧化 

分 类 号：X703[环境科学与工程—环境工程]