华中科技大学学报（自然科学版）2025，Vol.53Issue(10)：147-153,7.DOI:10.13245/j.hust.250472
ZnSO4强化K2FeO4去除油污的效能和机制探析
Study on efficiency and mechanism of removing oil pollution using ZnSO4 enhanced K2FeO4
摘要
Abstract
Aiming at the problem that oil pollution in water contained a significant quantity of harmful substances,making it difficult to remove quickly and effectively,diesel and engine oil in water were targeted as the primary pollutants,and the removal efficiencies of four catalysts,namly ZnSO4,FeSO4,CuS,and Cu2S,both individually and in combination with K2FeO4 were compared.Results show that ZnSO4 is the most effective catalyst.The optimal dosage ratio of catalysts and K2FeO4 was investigated,and the reaction kinetics were analyzed using two nonlinear models.Results show that the best removal efficiencies for diesel and engine oil in wastewater are achieved with ZnSO4 to K2FeO4 dosage ratios of 0.5∶1.00 and 1.0∶1.0,with the removal rates of 73.60％and 64.45％,respectively.The reaction is better described by the pseudo-second-order kinetic model.The ZnSO4-K2FeO4 coupled system achieves removal rates of 92.3％and 87.8％at a reaction temperature of 35℃ and an initial pH value of 3.Electron paramagnetic resonance(EPR)analysis of the two systems detected a significant addition of sulfate radicals to the hydroxyl radicals for pollutant degradation.Results show that Fe(IV)and Fe(V)play a significant role in the removal of oil pollution.关键词
高铁酸钾/硫酸锌/水中油污/去除效果/活性物质Key words
potassium pertechnetate/zinc sulfate/oil pollution in water/removal effect/active substance分类
环境科学引用本文复制引用
蒋晖,熊宇,雷晓玲,宋玲..ZnSO4强化K2FeO4去除油污的效能和机制探析[J].华中科技大学学报（自然科学版）,2025,53(10):147-153,7.基金项目
重庆市水利科技项目(CQSCK-2023013) （CQSCK-2023013）
重庆市技术创新与应用发展专项(CSTB2022TIAD-KPX0133) （CSTB2022TIAD-KPX0133）
重庆市中小学创新人才培养工程项目计划(CY240702) （CY240702）
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）
