不同固废基载体材料固定化菌剂的制备及其对复合污染土壤的修复效果比较  

Preparation of Immobilized Microbial Agents of Different Solid Waste-Based Carrier Materials and Comparison of Their Remediation Effects on Composite Contaminated Soils

作　　者：王英刚[1] 褚美函 贾春云[2] 刘泽浩 白旭琴 金赵明 WANG Yinggang;CHU Meihan;JIA Chunyun;LIU Zehao;BAI Xuqin;JIN Zhaoming(Key Laboratory of Regional Polluted Environment and Ecological Restoration of Ministry of Education,Shenyang University,Shenyang 110044,China;Key Laboratory of Pollution Ecology and Environmental Engineering,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China;School of Environmental and Safety Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;Shenyang Huiyu Chemical Environmental Protection Technology Co.,LTD.,Shenyang 110000,China)

机构地区：[1]沈阳大学区域污染环境生态修复教育部重点实验室,辽宁沈阳110044 [2]中国科学院沈阳应用生态研究所污染生态与环境工程重点实验室,辽宁沈阳110016 [3]沈阳化工大学环境与安全工程学院,辽宁沈阳110142 [4]沈阳惠宇化工环保科技有限公司,辽宁沈阳110000

出　　处：《沈阳大学学报（自然科学版）》2024年第6期480-488,共9页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金面上项目(41673132);中国科学院沈阳应用生态研究所自主部署重大项目(IAEMP202201);沈阳市社会治理科技专项(SZ240652)。

摘　　要：为了更加高效绿色地修复重金属多环芳烃复合污染土壤,将3种PAHs高效降解菌毛霉、黑曲霉和分枝杆菌复配后,选择不同的固废基材料作为载体制备固定化菌剂,考察了不同固定化菌剂对土壤中重金属和多环芳烃的修复效果。结果表明:小麦秸秆在马弗炉700℃无氧煅烧2 h制得的生物炭作为载体的固定化菌剂,对土壤中镉和多环芳烃的修复解效果最好;当投加的固定化菌剂的质量分数为1%时,复合污染土壤中phe(菲)的降解效率高达86.78%以上,pyr(芘)的降解率高达60.77%;污染土壤中Cd的钝化率达到23.99%。In order to remediate the heavy metal-polycyclic aromatic hydrocarbons(PAHs)composite contaminated soil more efficiently and greenly,three kinds of PAHs highly efficient degrading bacteria,Mucor mucedo,Aspergillus niger and Mycobacterium gilvum SN12,were compounded,and different solid waste-based materials were selected as carriers to prepare immobilized microbial agents,and the remediation effects of different immobilized microbial agents on heavy metals and polycyclic aromatic hydrocarbons in the soil were investigated.The results showed that biochar prepared from wheat straw calcined at 700℃for 2 h was used as an immobilized agent for the carrier,and had the best effect on the remediation of cadmium and polycyclic aromatic hydrocarbons in soil;when the mass fraction of immobilized microbial agent was 1%,the degradation efficiency of phe in the composite contaminated soil was as high as 86.78%,the degradation rate of pyr was as high as 60.77%,and the passivation rate of Cd in the contaminated soil reached 23.99%.

关 键 词：固废基材料 固定化菌剂 重金属 多环芳烃 土壤复合污染 生物修复 

分 类 号：X53[环境科学与工程—环境工程]