Wang Li, Ji Bin, Hu Yuehua, Liu Runqing, Sun Wei
School of Mineral Processing and Bioengineering, Central South University, Changsha, 410083, PR China.
School of Mineral Processing and Bioengineering, Central South University, Changsha, 410083, PR China.
Chemosphere. 2017 Oct;184:594-600. doi: 10.1016/j.chemosphere.2017.06.025. Epub 2017 Jun 7.
Mine tailings are detrimental to natural plant growth due to their physicochemical characteristics, such as high pH, high salinity, low water retention capacity, high heavy metal concentrations, and deficiencies in soil organic matter and fertility. Thus, the remediation of mine tailings has become a key issue in environmental science and engineering. Phytoremediation, an in situ cost-effective technology, is emerging as the most promising remediation method for mine tailings by introducing tolerant plant species. It is particularly effective in dealing with large-area mine tailings with shallow contamination of organic, nutrient and metal pollutants. In this review, the background, concepts and applications of phytoremediation are comprehensively discussed. Furthermore, proper amendments used to improve the physical, chemical and biological properties of mine tailings are systematically reviewed and compared. Emphasis is placed on the types and characteristics of tolerant plants and their role in phytoremediation. Moreover, the role of microorganisms and their mechanism in phytoremediation are also discussed in-depth.
由于尾矿的物理化学特性，如高pH值、高盐度、低保水能力、高重金属浓度以及土壤有机质和肥力不足，尾矿对天然植物生长有害。因此，尾矿修复已成为环境科学与工程领域的关键问题。植物修复是一种原位低成本技术，通过引入耐性植物物种，正成为尾矿最具前景的修复方法。它在处理大面积受有机、营养和金属污染物轻度污染的尾矿方面特别有效。在这篇综述中，全面讨论了植物修复的背景、概念和应用。此外，还系统地综述和比较了用于改善尾矿物理、化学和生物学性质的适当改良剂。重点介绍了耐性植物的类型和特性及其在植物修复中的作用。此外，还深入讨论了微生物在植物修复中的作用及其机制。
