柠檬酸和槐糖酯对Pb和Cd污染土壤的植物修复强化研究  

Study on Phytoremediation and Strengthening of Citric Acid and Sophorolipid on Pb and Cd Contaminated Soil

作　　者：吕昕璐 李汶泽 Lv Xinlu;Li Wenze(Shanghai Qingning Environmental Planning and Design Co.,Ltd.;Shanghai Enci Environmental Technology Co.,Ltd.,Shanghai 200040,China)

机构地区：[1]上海清宁环境规划设计有限公司 [2]上海恩磁环境科技有限公司,上海200040

出　　处：《中国资源综合利用》2020年第6期16-19,共4页China Resources Comprehensive Utilization

摘　　要：本文以受重金属污染土壤中的Pb和Cd为研究对象,研究了不同浓度配比的柠檬酸和槐糖酯混合溶液对植物吸附土壤中的重金属离子能力的影响。试验结果表明,表面活性剂(槐糖酯)和螯合剂(柠檬酸)联合使用对植物吸附土壤中重金属离子有很大的促进作用,土壤中的重金属Pb和Cd在植物体内显著富集,达到去除效果,在柠檬酸和槐糖酯浓度比为1∶5的情况下,吸附效果最好。Taking Pb and Cd in soil contaminated by heavy metals as the research object,the effect of different concentrations of citric acid and sophorolipid mixed solution on the ability of plants to adsorb heavy metal ions in soil was studied in this paper.The test results show that the combined use of surfactant(sophorolipid)and chelating agent(citric acid)can greatly promote the adsorption of heavy metal ions in soil by plants,the heavy metals Pb and Cd in the soil are significantly enriched in the plant to achieve the removal effect,when the concentration ratio of citric acid and sophorolipid is 1∶5,the adsorption effect is the best.

关 键 词：柠檬酸 槐糖酯 污染土壤 植物修复 

分 类 号：X53[环境科学与工程—环境工程]