Nie Xinyi, Huang Xianhuai, Li Man, Lu Zhaochi, Ling Xinhe
School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China.
Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Hefei 230601, China.
Toxics. 2024 Nov 29;12(12):872. doi: 10.3390/toxics12120872.
Heavy metal contamination is a critical factor contributing to soil degradation and poses significant environmental threats with profound implications for ecosystems and human health. Soil amendments have become an effective strategy to address these challenges by reducing heavy metal hazards and remediating contaminated soils. This review offers a comprehensive analysis of recent advancements in soil amendments for heavy metal-contaminated soils, with a focus on natural, synthetic, natural-synthetic copolymer, and biological amendments. By thoroughly examining and contrasting their remediation mechanisms and effects, this study provides a detailed evaluation of their influence on soil physicochemical properties, leachable heavy metal content, and microbial communities. Through bibliometric analysis, current research priorities and trends are highlighted, offering a multidimensional comparison of these amendments and clarifying their varying applicability and limitations. Furthermore, this review explores future prospects and the inherent challenges in soil amendments for heavy metal contamination, aiming to offer valuable insights and theoretical references for the development and selection of novel, efficient, multifunctional, environmentally friendly amendments.
重金属污染是导致土壤退化的关键因素，对生态系统和人类健康构成重大环境威胁，影响深远。土壤改良剂已成为应对这些挑战的有效策略，可通过降低重金属危害和修复受污染土壤来实现。本综述全面分析了用于重金属污染土壤的土壤改良剂的最新进展，重点关注天然、合成、天然 - 合成共聚物和生物改良剂。通过深入研究和对比它们的修复机制及效果，本研究详细评估了它们对土壤理化性质、可淋溶重金属含量和微生物群落的影响。通过文献计量分析，突出了当前的研究重点和趋势，对这些改良剂进行了多维度比较，并阐明了它们不同的适用性和局限性。此外，本综述探讨了重金属污染土壤改良剂的未来前景和固有挑战，旨在为新型、高效、多功能、环境友好型改良剂的开发和选择提供有价值的见解和理论参考。
