植物修复铬污染土壤的化学增强方法研究  

Chemical Enhancement Method for Phytoremediation of Chromium Contaminated Soil

作　　者：时唯伟 朱堂烈 张大磊[3] Shi Weiwei;Zhu Tanglie;Zhang Dalei(Center for Soil Pollution Control of Shandong,Jinan City,Jinan 250012,China;ecological environment monitoring center of Yinan County,Linyi City,Shandong Province,Linyi 276399,China;Qingdao University of technology,Qingdao 266520,China)

机构地区：[1]山东省土壤污染防治中心,山东济南250012 [2]山东省临沂市沂南县生态环境监控中心,山东临沂276399 [3]青岛理工大学,山东青岛266520

出　　处：《环境科学与管理》2022年第10期114-118,共5页Environmental Science and Management

摘　　要：文章探索了TX-100和茶皂素的增效Cr的生物富集过程。结果表明这两种表面活性剂对于植物吸附Cr具有一定的增效作用。当TX-100浓度为1 mmol/L时,能显著增强植物对Cr的富集,并能提高植物中Cr从地下向上转移的能力,而当茶皂素浓度为5 g/L时,对于生物量、生物累积系数和转移系数的提升都十分显著。综合两种表面活性剂的整体表现,5.0 g/L的茶皂素更适用于化学增强的植物修复,先将表面活性剂用于污染土壤的静态活化,土壤活化后再进行生物修复,能提高土壤中重金属的溶解度和植物吸附重金属的效率,使重金属更易从土壤中去除。This paper explores the bioaccumulation process of synergistic Cr by TX-100 and tea saponin. The results show that these two surfactants have a certain synergistic effect on the adsorption of Cr by plants.When the concentration of TX-100 is 1 mmol/L, it can significantly enhance the enrichment of Cr in plants, and improve the ability of transferring Cr from underground to upward. When the concentration of tea saponin is 5 g/L, it can significantly improve the biomass, bioaccumulation coefficient and transfer coefficient. According to the overall performance of the two surfactants, 5.0 g/L tea saponin is more suitable for chemically enhanced phytoremediation. Using surfactants for static activation of contaminated soil first, and then bioremediation after soil activation can improve the solubility of heavy metals in soil and the efficiency of plant adsorption of heavy metals, and make it easier to remove heavy metals from soil.

关 键 词：铬污染 植物修复 化学强化 表面活性剂 生物累积 

分 类 号：X53[环境科学与工程—环境工程]