亚铁离子活化过硫酸盐降解土壤中的多环芳烃研究

摘要

利用亚铁离子（Fe2+）活化过硫酸钠（Na2S2O8）产生的硫酸根自由基（SO4·-）去除土壤中典型的多环芳烃（PAHs）物质：萘（naphthalene）、蒽（anthracene）、苊（acenaphthene）。文章探讨了温度、腐殖酸（HA）、碳酸根离子（CO32-）对萘、蒽、苊降解的影响。结果表明，利用亚铁离子活化过硫酸钠可有效降解土壤中的萘、蒽、苊，温度的升高有利于提高萘、蒽、苊的降解速率，而土壤中HA和CO32-的存在则对反应有明显的抑制作用。%The removal of polycyclic aromatic hydrocarbons(PAHs)by ferrous ion(Fe2+)activated persulfate(SO4 ·-) was investigate. We focus on the influent of temperature, humic acid (HA) carbonate ion(CO32-)on the removal efficiency of typical PAHs: naphthalene, anthracene and acenaphthene. The results indicate that the increasing temperature promotes the degradation of naphthalene, anthracene and acenaphthene. On the contrary, both HA and CO32-exhibited an inhibitory effect.