硫化纳米零价铁在地下水修复中的研究进展
Research advances in groundwater remediation by sulfidized nanoscale zerovalent iron
陈宗定 1孔祥科 2许春雪 3张兆吉 2黄园英 3孙慧中 3安子怡3
作者信息
- 1. 中国地质科学院水文地质环境地质研究所,河北石家庄 050061;国家地质实验测试中心,自然资源部生态地球化学重点实验室,北京 100037
- 2. 中国地质科学院水文地质环境地质研究所,河北石家庄 050061
- 3. 国家地质实验测试中心,自然资源部生态地球化学重点实验室,北京 100037
- 折叠
摘要
相比于传统的纳米零价铁(nZVI)材料,经硫化改性得到的硫化纳米零价铁(S-nZVI)具有活性高、电子选择性强等优势,在地下水污染修复研究中倍受关注.在系统总结目前S-nZVI的主要制备和改性方法基础上,重点阐述了其与含氯有机污染物及重金属的反应机理,指出S-nZVI的合成过程(硫化方法、硫化剂及S/Fe比)和水环境(pH值及化学组分等)是影响其与污染物反应活性的重要因素.此外,从S-nZVI的稳定性、迁移性和生物毒性方面评述了其在地下水修复中的应用前景,并对S-nZVI未来研究方向进行了展望,以期为S-nZVI应用于地下水原位修复提供支撑.
Abstract
Compared with the traditional nanoscale zerovalent iron(nZVI)materials,sulfidized nanoscale zerovalent iron(S-nZVI)has the advantages of high activity and electron selectivity,which has attracted much attention in the remediation of groundwater contamination.Based on the systematic summary of the main synthesis and modification methods of S-nZVI,the reaction mechanism of S-nZVI with chlorine-containing organic pollutants and heavy metals was summarized.The synthesis process of S-nZVI(sulfidation method,sulfur precursors and S/Fe ratio)and the water environmental factors(pH and chemical components)are the important factors influencing the reactivity of S-nZVI with pollutants.In addition,the application prospects of S-nZVI in the groundwater remediation were reviewed from the aspects of its stability,mobility and biologic toxicity.Finally,the future research directions of S-nZVI were prospected to support the application of S-nZVI for in situ groundwater remediation.
关键词
硫化纳米零价铁/制备/地下水/修复Key words
sulfidized nanoscale zerovalent iron/preparation/groundwater/remediation引用本文复制引用
基金项目
中国地质调查局地质调查项目(DD20230418)
中国地质科学院基本科研业务费项目(CSJ-2023-07)
国家自然科学基金资助项目(4207071759)
出版年
2024
NETL
NSTL
万方数据