Microbial Induced Solidification of Municipal Solid Waste Incineration Fly Ash
To investigate the applicability of microbial induced calcite precipitation(MICP)to the solidification of municipal solid waste incineration(MSWI)fly ash,the following work are carried out.Firstly,three ureolytic strains,UR1,UR2 and UR3,were isolated and identified as Sphingobacterium cladoniae,Bacillus aryabhattai and Raoultella ornithinolytica,respectively.Secondly,the fly ash samples were solidified by the above three strains,and the case with strain UR2 displayed largest unconfined compressive strength of 0.740 MPa.Lastly,heavy metal leaching test was carried out for the solidified samples.The immobilization ratios for Cu,Pb,and Cd were in the range of 41– 77%.The case with UR1 displayed higher immobilization ratios for Cu,Cr,and Cd,and UR2 exhibited higher immobilization ratio for Pb.Overall,strains UR1 and UR2 provide promising use for the solidification of MSWI fly ash.
MSWI fly ash Heavy metal Immobilization rate Microbial induced calcite precipitation (MICP)
Guiwei Wang Hui Xu Xiaoqing Ding Yanxu Gao Ping Chen Xiufang Hu
College of Life Science,Zhejiang Sci-Tech University,Hangzhou 310018,Peoples Republic of China School of Civil Engineering and Architecture,Zhejiang Sci-Tech University,Hangzhou 310018,Peoples R
国际会议
The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)
杭州
英文
363-368
2018-10-28（万方平台首次上网日期，不代表论文的发表时间）