硅酸盐通报2025，Vol.44Issue(5)：1742-1754,13.DOI:10.16552/j.cnki.issn1001-1625.2024.1265
复合营养液在微生物诱导固化与修复含硫铅锌尾矿中的应用研究
Application of Composite Nutrient Solution in Solidification and Remediation of Sulfur-Containing Lead-Zinc Tailings Induced by Microorganisms
摘要
Abstract
In order to slove the environmental pollution problem caused by sulfur-containing lead-zinc tailings,this study adopted microbial induced calcuim carbonate precipitation technology to solidify and remediate the tailings through the synergistic action of S.pasteurii and sulfate-reducing bacteria.By simultaneously optimizing the formula of the composite nutrient solution,it is found that ammonium bicarbonate is the optimal carbon source,and the best results achieve when the calcium source concentration is 0.50 mol/L.The results show that the unconfined compressive strength of the composite nutrient solution specimen is 1.075 MPa and the calcium carbonate content is 13.03％.Compared with the basic nutrient solution of the same concentration,unconfined compressive strength and calcium carbonate content have increased by 27.33％and 29.21％,respectively.Additionally,the curing effect of heavy metal ions and sulfate ions is remarkable,with Pb2+,total Fe,total Cr,Cd2+,Cu2+,and Mn2+being completely removed,the curing rate of Zn2+exceeding 98％,and the curing rate of SO42-is up to 88.68％.Microscopic analysis reveals that the solidified samples formed highly cohesive crystals such as aragonite and calcite,effectively binding the tailings particles together.This study offers a novel approach for the solidification and remediation of sulfur-containing lead-zinc tailings.关键词
微生物诱导碳酸钙沉淀/含硫铅锌尾矿/复合营养液/巴氏芽孢杆菌/硫酸盐还原菌Key words
microbial induced calcium carbonate precipitation/sulfur-containing lead-zinc tailing/composite nutrient solution/S.pasteurii/sulfate-reducing bacteria分类
通用工业技术引用本文复制引用
谷庆,狄军贞..复合营养液在微生物诱导固化与修复含硫铅锌尾矿中的应用研究[J].硅酸盐通报,2025,44(5):1742-1754,13.基金项目
国家自然科学基金(41672247) （41672247）
辽宁省"兴辽英才"青年拔尖人才计划支持(XLYC1807159) （XLYC1807159）
校"双一流"创新团队(LNTU20TD-21) （LNTU20TD-21）
