太原理工大学学报2026，Vol.57Issue(5)：964-972,9.DOI:10.16355/j.tyut.1007-9432.20240304
基于响应面法的铅砷污染土固化剂优化设计及机理研究
Optimization Design and Mechanism of Curing Agent for Lead-Arsenic Contaminated Soil Based on Response Surface Method
摘要
Abstract
[Purposes]Because of the different physicochemical properties of lead(Pb)and arse‑nic(As)and the intense mobility of trivalent arsenic,coupled remediation processes of contaminated soils with toxic cations[Pb(Ⅱ)]and anions[As(Ⅲ)/As(Ⅴ)]have always been a technical challenge.[Methods]In this paper,the Box-Behnken design test in response surface methodology was used to explore the effect of curing agent(ERS)synthesized by different steel slag,modified electrolytic man‑ganese slag,and red mud ratios combined with Fenton reagent on solidification/stabilization of lead-arsenic co-contaminated soil.[Results]The results show that the model developed by response sur‑face methodology can accurately predict the relationship between factors and curing performance.The strength value of stabilized/solidified contaminated soil reaches 1.05 MPa when the content of the Fen‑ton reagent is 1.92％and ERS(manganese slag to steel slag mass ratio of 0.544 and red mud content of 28.755％)is 15％.In addition,the Pb and As leaching concentrations from the ERS-Fenton-based stabilized/solidified soil are only 0.10 and 0.33 mg·L-1,respectively.Adding the Fenton reagent can assist the ERS curing agent to oxidize most of the As(Ⅲ)in the contaminated soil to As(Ⅴ)and pro‑mote ettringite production.Complexation-precipitation,chemical oxidation,and physical encapsula‑tion are the main solidification/stabilization mechanisms controlling the effects of the ERS curing agent and Fenton reagent on Pb and As in the soil.[Conclusions]This paper provides a new research idea and technical path for the remediation of heavy metal contaminated sites,and the research results can provide a scientific basis and theoretical support for the resource utilization of hazardous solid waste.关键词
铅砷污染土/固化/稳定化/芬顿试剂/响应面法/协同机制Key words
lead-arsenic contaminated soil/solidification/stabilization/Fenton reagent/response surface method/synergistic mechanism分类
建筑与水利引用本文复制引用
陈涛,何斌,褚东鑫,刘克难,王林浩,马富丽,韩鹏举,白晓红..基于响应面法的铅砷污染土固化剂优化设计及机理研究[J].太原理工大学学报,2026,57(5):964-972,9.基金项目
国家自然科学基金项目(41807256) （41807256）
山西省基础研究计划项目(202203021211136) （202203021211136）
