Research Progress on Bioremediation Technologies for Heavy Metal Contaminated Water and Soil
Pollution of natural ecosystems by heavy metals seriously affects the health and survival of humans,plants,animals and microorganisms.Various chemical and physical treatment methods are available for heavy metal contamination in soil and water,but these methods are usually time-consuming,costly,and ineffective in contaminated areas with extremely high metal content,and are therefore not well accepted.Bioremediation,as a low-cost and sustainable green technology,has greater prospects for development.Common bioremediation includes phytoremediation and microbial remediation:phytoremediation is a classical green remediation technology that utilizes the adsorption of heavy metals by plants to achieve effective enrichment,uptake,and degradation;microbial remediation is an ecologically friendly and highly efficient method that utilizes potential microbial species to remediate heavy metal-contaminated soils and waters through biological mechanisms.This thesis presents the mechanisms and research progress of bioremediation for the removal of heavy metals in soil and water,and also points out the research bottlenecks in practical applications.
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