Yu Guanlong, Li Peiyuan, Wang Guoliang, Wang Jianwu, Zhang Yameng, Wang Shitao, Yang Kai, Du Chunyan, Chen Hong
Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410114, People's Republic of China.
World J Microbiol Biotechnol. 2021 Aug 21;37(9):157. doi: 10.1007/s11274-021-03123-1.
Heavy metals and metalloids (HMMs) pose a serious threat to both environmental and human health. The unique characteristics and environmental toxicity of HMMs make their removal from the environment a major challenge. Constructed wetlands (CWs) are increasingly being used as an eco-friendly system for the removal of HMMs from aqueous environments. In this review, bibliometric analysis was performed using the Scopus database using VOSviewer software to assess the developing use of CWs in recent years. Heavy metal and metalloid (HMM) removal pathways were reviewed (such as precipitation, co-precipitation, adsorption and ion exchange, plant action and microbial action) along with the impact of key factors (pH, chemical oxygen demand, dissolved oxygen, HMM concentration, and temperature). This review aimed to establish the connections between published results, to help effectively optimize the use of CWs for the removal of HMMs and identify the most critical factors for their effective removal. Important aspects that require further research include assessing the synergistic toxicity between different pollutants and combining the use of CWs with other technologies to optimize pollutant remediation efficiency.
重金属和类金属对环境和人类健康都构成严重威胁。重金属和类金属的独特特性及环境毒性使得从环境中去除它们成为一项重大挑战。人工湿地正越来越多地被用作一种生态友好型系统，用于从水环境中去除重金属和类金属。在本综述中，使用VOSviewer软件通过Scopus数据库进行文献计量分析，以评估近年来人工湿地的应用发展情况。综述了重金属和类金属的去除途径（如沉淀、共沉淀、吸附与离子交换、植物作用和微生物作用）以及关键因素（pH值、化学需氧量、溶解氧、重金属和类金属浓度以及温度）的影响。本综述旨在建立已发表结果之间的联系，以帮助有效优化人工湿地去除重金属和类金属的应用，并确定其有效去除的最关键因素。需要进一步研究的重要方面包括评估不同污染物之间的协同毒性，以及将人工湿地与其他技术结合使用以优化污染物修复效率。
