Welcome to Metal Mine! Today is Share:
×

扫码分享

Metal Mine ›› 2022, Vol. 51 ›› Issue (07): 225-232.

Previous Articles     Next Articles

Application of Bifunctional Bacterial Flora in the Remediation of Butyl Xanthate and Cd Compound Contamination Soil in Metal Mining Areas

LIN Hai1,2QIN Kangjia1DONG Yingbo1,2,3LI Bing1,2HOU Xuewen1TANG Yalu1#br#   

  1. 1.School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;2.Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants,Beijing 100083,China;3.State Key Laboratory of Mineral Processing,Beijing 102628,China
  • Online:2022-07-15 Published:2022-07-31

Abstract: Typical flotation chemicals butyl xanthate and heavy metal Cd in metal mining areas have the characteristics of easy accumulation and high migration,which lead to serious compound pollution of the soil around the mining area,but there is still a lack of efficient and green remediation technology for them.The effectiveness and soil microbial characteristics of the bifunctional flora SDMC in remediating the compound contamination soil with butyl xanthate and Cd were studied,and the results showed that the degradation rate of butyl xanthate and Cd mineralization rate could reach 63.34% and 71.83%,respectively,with good remediation effect.The soil microbial abundance,peroxidase,urease,sucrase activity,and AWCD increased by 9,1.22,5.92,1.15 and 1.18 times,respectively,compared with the non-remediated soil,indicating significant facilitation for soil microbial abundance,enzymatic and metabolic activity.The relative abundance of Sporosarcina,Hyphomicrobium and Pseudomonas,which play a role in degrading mineralized composite pollutants,increased by 43.75 percentage points,21.32 percentage points and 4.25 percentage points,respectively,indicating that SDMC has become the dominant bacteria for remediation,and this study provides a new method for remediation of butyl xanthate and Cd compound pollution soil in metal mining areas.

Key words: soil remediation in mining area, butyl xanthate, Cd, degradation and mineralization, soil microbial activity