溶磷微生物在钝化和植物修复重金属污染土壤中的作用

doi:10.13560/j.cnki.biotech.bull.1985.2022-0784

摘要/Abstract

摘要：

钝化和植物修复是重金属污染土壤修复的重要技术手段，而溶磷微生物可进一步增强钝化和植物修复重金属污染土壤的作用。介绍了钝化和植物修复重金属污染土壤的基本原理，总结了溶磷微生物对土壤中难溶性磷酸盐的溶解、利用磷酸盐钝化修复重金属污染土壤、溶磷微生物对磷酸盐钝化修复的强化以及溶磷微生物强化植物修复重金属污染土壤的研究进展，探讨了溶磷微生物对重金属的抗性及其溶磷机理、溶磷微生物对磷酸盐钝化修复重金属污染土壤的强化作用机理以及溶磷微生物强化植物修复重金属污染土壤的作用机理。旨在为生物修复重金属污染土壤研究提供一定的理论依据和技术支撑。

关键词: 重金属污染土壤, 钝化, 植物修复, 溶磷微生物, 生物修复

Abstract:

Passivation and phytoremediation are primary means for the ecologsical remediation of heavy metal contaminated soil, and microorganisms can further strengthen the passivation and phytoremediation of heavy metal contaminated soil. We introduced the basic principles of passivation and phytoremediation of heavy metal contaminated soil. Then we reviewed the study progresses on the solubilization of insoluble phosphates in soil by phosphate-solubilizing microorganisms, passivation remediation of heavy metal contaminated soil by phosphates, enhancement of phosphate passivation and phytoremediation of heavy metal contaminated soil by phosphate-solubilizing microorganisms. Further we discuss the heavy metals resistance of phosphate-solubilizing microorganisms and the phosphate-solubilizing mechanism. We also explored the enhancement mechanism of phosphate passivation and phytoremediation of heavy metal contaminated soil by phosphate-solubilizing microorganisms. The aim of this study is to provide a certain theoretical and technical references for bioremediation of heavy metal contaminated soil.

Key words: heavy metal contaminated soil, passivation, phytoremediation, phosphate-solubilizing microorganism, bioremediation

张华香, 徐晓婷, 郑云婷, 肖春桥. 溶磷微生物在钝化和植物修复重金属污染土壤中的作用[J]. 生物技术通报, 2023, 39(3): 52-58.

ZHANG Hua-xiang, XU Xiao-ting, ZHENG Yun-ting, XIAO Chun-qiao. Roles of Phosphate-solubilizing Microorganisms in the Passivation and Phytoremediation of Heavy Metal Contaminated Soil[J]. Biotechnology Bulletin, 2023, 39(3): 52-58.

图/表 3

图1 溶磷微生物对重金属的抗性及其溶磷机理

Fig. 1 Resistance of phosphate-solubilizing microorganism to heavy metals and its mechanism of phosphate solubilization

图2 溶磷微生物对磷酸盐钝化修复重金属污染土壤的强化作用机理

Fig. 2 Enhancement mechanism of phosphate passivation and remediation of heavy metal contaminated soil by phosphate-solubilizing microorganism

图3 溶磷微生物强化植物修复重金属污染土壤的作用机理

Fig. 3 Mechanism of enhanced phytoremediation of heavy metal contaminated soil by phosphate-solubilizing microorganism

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