陕西科技大学学报2025，Vol.43Issue(3)：38-47,56,11.
典型黏土矿物-土壤细菌相互作用对镉固定的影响
The impact of typical clay mineral-soil bacteria interactions on cadmium immobilization
摘要
Abstract
Cd(Ⅱ)is a focal point in the prevention and control of soil heavy metal pollution due to its high toxicity and bioaccumulation.The interactions between soil minerals and mi-croorganisms are key factors influencing the migration and transformation of Cd(Ⅱ)in soils.Different types of microorganisms may lead to variations in the microbial-mineral interaction system concerning heavy metal immobilization due to their diverse life activities and modes of interaction with soil minerals.This study investigates the effects of interactions between four soil bacteria(strains NP1142,Y42,CMX-5,and D417)and the typical clay mineral montmo-rillonite on the removal of Cd(Ⅱ)under varying nutrient conditions.It also evaluates the po-tential of specific bacterial strains for heavy metal remediation.The results indicate that the performance of Cd(Ⅱ)removal through the synergistic treatment system of bacteria and montmorillonite significantly surpasses the effects achieved by either bacteria or montmoril-lonite alone,especially under oligotrophic conditions,where the removal rate of Cd(Ⅱ)can increase by 10％～45％.Among the four bacterial strains of Bacillus and Sporolactobacillus,strains NP1142 and Y42 exhibit the highest efficiency in removing Cd(Ⅱ)when interacting with montmorillonite.During the interaction with montmorillonite,bacteria can notably in-crease the solution's pH and alter the functional groups on the surface of montmorillonite,thus achieving a significant enhancement in the efficiency of removing Cd from aqueous solu-tions.This research elucidates the influence of bacterial-montmorillonite interactions on the efficiency of Cd removal,providing scientific evidence for selecting appropriate microbial strains and optimizing strategies for remediation of soil Cd contamination,and offering new insights into the application of clay minerals in heavy metal management.关键词
土壤细菌/蒙脱石/重金属/固定性能Key words
soil bacteria/montmorillonite/heavy metals/immobilization performance分类
资源环境引用本文复制引用
万学雅,赖潘民旺,魏梦珍,袁梦瑶,王姊煜,张晨昊,任心豪..典型黏土矿物-土壤细菌相互作用对镉固定的影响[J].陕西科技大学学报,2025,43(3):38-47,56,11.基金项目
陕西省自然科学基础研究计划项目(2024JC-YBQN-0319) （2024JC-YBQN-0319）
陕西省重点产业链项目(2022ZDLNY02-02,2024NC-ZDCYL-02-15) （2022ZDLNY02-02,2024NC-ZDCYL-02-15）
陕西省科技创新团队计划项目(2022TD-09) （2022TD-09）
