锰氧化物在芘污染土壤修复中的应用研究  

An Application of Manganese Oxides in Remediation of Pyrene Contaminated Soil

作　　者：张季[1] 刘伟 王慎 ZHANG Ji;LIU Wei;WANG Shen(Changjiang Water Resources Protection Institute, Wuhan, Hubei 430051, China)

机构地区：[1]长江水资源保护科学研究所,湖北武汉430051

出　　处：《中国锰业》2022年第3期27-32,共6页China Manganese Industry

摘　　要：多环芳烃(PAHs)由于其致癌、致突变和致畸的性质而引起了人们的广泛关注。锰氧化物(Mn_(x)O_(y))是土壤矿物的重要活性成分,在土壤中的分布极为广泛。以芘为对象,研究了在微波活化过硫酸盐(MW/PS)体系中Mn_(x)O_(y)对修复PAHs污染的土壤的强化作用。结果表明,添加Mn_(x)O_(y)后,显著提升了该体系对芘的去除性能,催化效果为β-MnO_(2)>α-MnO_(2)>γ-MnO_(2)>Mn_(2)O_(3)。当β-MnO_(2)的用量从0 g增加到0.1 g时,15 min内的芘降解率从62%提高到82%。为如何提升MW/PS体系对PAHs污染土壤的修复作用提供了一条重要思路。Polycyclic aromatic hydrocarbons(PAHs)have attracted extensive attention,due to their carcinogenic,mutagenic and teratogenic properties.Manganese oxide(Mn_(x)O_(y))is an important active component of soil minerals,which is widely distributed in soil.The enhancement effect of Mn_(x)O_(y) on remediation of PAHs contaminated soil in microwave activated persulfate(mw/ps)system was studied in this article.The results show that the addition of mnxoy significantly improved the pyrene removal performance of the system,among which there areβ-MnO_(2)>α-MnO_(2)>γ-Catalytic effect of MnO_(2)>Mn_(2)O_(3).Whenβ-and the dosage of MnO_(2)are increased from 0 g to 0.1 g,the pyrene degradation rate will be increased from 62%to 82%within 15 min.It provides an important way to improve the remediation effect of MW/PS system on PAHs contaminated soil.

关 键 词：锰氧化物 土壤修复 微波 过硫酸盐 芘 

分 类 号：X53[环境科学与工程—环境工程]