华中科技大学学报（自然科学版）2024，Vol.52Issue(10)：142-148,7.DOI:10.13245/j.hust.240626
Na2SO3强化K2FeO4降解有机锡的效能及机制研究
Study on efficiency and mechanism of Na2SO3 enhanced K2FeO4 degradation of organotin
摘要
Abstract
To effectively remove organotin pollutants from aquatic environments,tributyltin(TBT)and triphenyltin(TPhT)were targeted as pollutants,and the degradation efficiency and removal mechanism of sodium sulfite(Na2SO3)enhanced potassium ferrate(K2FeO4)for TBT and TPhT were investigated.Results show that the optimal removal efficiency for TBT and TPhT is achieved at pH of 8,with Na2SO3 and K2FeO4 dosages of 40 mg/L and 300 mg/L,respectively,improving by 26.34%and 22.16%compared to the addition of K2FeO4 alone.The removal efficiency under anoxic conditions is found to be lower than that under oxic conditions.The reactive oxidative species are identified using tert-butanol,ethanol,and methyl phenyl sulfoxide,and it is determined that the primary reactive oxidative species for TBT and TPhT degradation is Fe(V),with sulfate radicals(SO4·-)and hydroxyl radicals(∙OH)also contributing to the degradation to some extent.Gas chromatography-mass spectrometry(GC-MS)analysis confirms that the reactive oxidative species could degrade TBT and TPhT by attacking the Sn-C bond,gradually removing butyl or phenyl groups,and ultimately oxidizing TBT and TPhT to inorganic tin ions.关键词
水环境/高铁酸钾/亚硫酸钠/三丁基锡/三苯基锡Key words
water environment/potassium ferrate/sodium sulfite/tributyltin/triphenyltin分类
资源环境引用本文复制引用
蒋晖,冉洪杰,林于廉,黄媛媛..Na2SO3强化K2FeO4降解有机锡的效能及机制研究[J].华中科技大学学报（自然科学版）,2024,52(10):142-148,7.基金项目
重庆市水利科技项目(CQSCK-2023013,CQSLK-2022001) （CQSCK-2023013,CQSLK-2022001）
重庆市技术创新与应用发展专项资助项目(CSTB2022TIAD-KPX0133) （CSTB2022TIAD-KPX0133）
重庆市教育委员会科学技术研究项目(KJZD-K202103801) （KJZD-K202103801）
重庆市2023年度城市管理科研科普项目(2023年第16号) （2023年第16号）
水利部重大科技项目(SKS-2022076). （SKS-2022076）
