磁性玉米秸秆生物质炭在石油污染土壤中的应用研究

Application of Magnetic Corn Stalk Biochar in Petroleum Contaminated Soil

石油组分复杂,进入土壤会破坏土壤生态系统,最终会通过食物链富集到人体,危害人体健康,所以石油污染土壤的修复与治理亟待解决。研究磁性生物质炭对污染土壤中总石油烃的去除效果,利用共沉淀的方法将铁元素负载到玉米秸秆生物质炭上,得到磁性生物质炭;通过FTIR、SEM、EDS、XPS等手段表征磁性生物质炭的形貌结构及性质;将磁性生物质炭用于石油污染土壤的修复中,研究石油污染物的去除效果。结果表明:铁元素已经成功负载到了磁性生物质炭表面;磁性生物质炭对石油污染物有很好得吸附效果,磁性生物质炭最佳的投加量为0.3 g,去除率可达58.67%。

The oil components are complex,and entering the soil will destroy the soil ecosystem,and will eventually enrich to the human body through the food chain,endangering human health,so the remediation and treatment of oil-contaminated soil is urgent to be solved.In order to study the removal effect of magnetic biochar on total petroleum hydrocarbons in contaminated soil,iron was loaded onto corn stalk biochar by coprecipitation method to obtain magnetic biochar.The morphology,structure and properties of magnetic biomass carbon were characterized by FTIR,SEM,EDS and XPS.Magnetic biochar was applied to the remediation of petroleum contaminated soil to study the removal effect of petroleum pollutants.The results showed that iron was successfully loaded on the surface of magnetic biochar;Magnetic biochar had good adsorption effect on petroleum pollutants.The best dosage of magnetic biochar was 0.3 g,and the removal rate reached 58.67%.