高校化学工程学报2017，Vol.31Issue(5)：1210-1216,7.DOI:10.3969/j.issn.1003-9015.2017.00.037
Fe2+/NH2OH联合活化过硫酸盐降解水中磺胺甲恶唑
Degradation of Sulfamethoxazole in Aqueous Solution by Ferrous/Hydroxylamine Activated Peroxymonosulfate
摘要
Abstract
Fe2+ activated peroxymonosulfate (Fe2+/PMS) as a Fenton-like oxidation system can produce strong reactive species and degrade many refractory organic contaminants in aqueous solutions. However, slow conversion of Fe3+ to Fe2+ dramatically limits extensive application of Fe2+/PMS systems. In this study, hydroxylamine (NH2OH) was used to strengthen the system to degrade a typical antibiotic. The degradation of sulfamethoxazole (SMX) was systematically investigated in Fe2+/NH2OH/PMS. The results indicate that dosage increase of PMS, Fe2+ and NH2OH can effectively promote SMX oxidation. In addition, solution temperature increase can promote reactive radical release and thus strengthen SMX degradation. However, the increase of SMX concentration and pH significantly inhibits SMX degradation. Furthermore, the analysis of reactive radicals shows that sulfate radical (SO?-4 ) is the primary active radical for the degradation of SMX in Fe2+/NH2OH/PMS.关键词
过一硫酸盐/羟胺/磺胺甲恶唑/硫酸根自由基Key words
peroxymonosulfate/hydroxylamine/sulfamethoxazole/sulfate radical分类
资源环境引用本文复制引用
李峰,刘桂芳,梁涛,王春丽,张玉平,蔡丽丽..Fe2+/NH2OH联合活化过硫酸盐降解水中磺胺甲恶唑[J].高校化学工程学报,2017,31(5):1210-1216,7.基金项目
黑龙江省博士后资助 (LBH-Z13062) （LBH-Z13062）
哈尔滨市科技局项目(2014RFQXJ187). （2014RFQXJ187）
