Acta Chim. Sinica ›› 2017, Vol. 75 ›› Issue (6): 575-582.DOI: 10.6023/A17020045 Previous Articles     Next Articles

Special Issue: 铁环境化学

Review

硫化纳米零价铁去除水体污染物的研究进展

汤晶a,b, 汤琳a,b, 冯浩朋a,b, 董浩然a,b, 章毅a,b, 刘思诗a,b, 曾光明a,b   

  1. a 湖南大学环境科学与工程学院 长沙 410082;
    b 湖南大学环境生物学与污染控制教育部重点实验室 长沙 410082
  • 收稿日期:2017-02-08 出版日期:2017-06-15 发布日期:2017-04-01
  • 通讯作者: 汤琳, 曾光明 E-mail:tanglin@hnu.edu.cn;zgming@hnu.edu.cn
  • 基金资助:

    项目受国家自然科学基金(Nos.51579096,51222805,51521006,51508175)和“万人计划”青年拔尖人才支持计划(2012)资助.

Research Progress of Aqueous Pollutants Removal by Sulfidated Nanoscale Zero-valent Iron

Tang Jinga,b, Tang Lina,b, Feng Haopenga,b, Dong Haorana,b, Zhang Yia,b, Liu Sishia,b, Zeng Guangminga,b   

  1. a College of Environmental Science and Engineering, Changsha 410082;
    b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082
  • Received:2017-02-08 Online:2017-06-15 Published:2017-04-01
  • Contact: 10.6023/A17020045 E-mail:tanglin@hnu.edu.cn;zgming@hnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 51579096, 51222805, 51521006, 51508175) and the National Program for Support of Top-Notch Young Professionals of China (2012).

Nanoscale zero-valent iron (NZVI), an environmental remediation agent derived from wide range of raw materials, has been extensively applied in the field of remedying polluted water environment such as groundwater and wastewater. Although NZVI possesses some advantages such as excellent reaction activity, low cost and low toxicity, the limitation of in-situ remediation and storage concerning this kind of material has not been completely overcome yet. Among methods to improve the practical application of NZVI in water environment, sulfidation has become a research hotspot over recent decade. This means that the focus of modifying NZVI has shifted from reaction activity to electron selectivity. Most of the preparation methods of sulfidated NZVI belong to the chemical approach. These sulfidated materials have been heavily used to degrade organic pollutants and remove heavy metals in water to test their practical reactivity. Reaction mechanisms of pollutants and sulfidated NZVI in different environmental systems have also been extensively investigated. Hereinto, according to the species of organic pollutants and the reaction conditions, these reaction mechanisms can be roughly divided into three categories, including adsorption, reduction, and oxidation. In recent years, it is noted that sulfidated NZVI has made great progress to enhance the reaction activity and electrons selectivity, though it still has some limitations in the practical application. It is necessary to thoroughly review recent research progress about the reaction activities of sulfidated NZVI and its reaction mechanisms with pollutants in water, because it can clearly figure out new directions towards future development of sulfidated NZVI application. Due to the superior properties of sulfidated zero-valent iron, this material and relevant iron sulfide-based materials are going to belong to the most important functional materials in the field of environmental remediation with promising development prospect.

Key words: nanoscale zero-valent iron, sulfidation, water environment, organic pollutants, heavy metal pollutants, reaction mechanisms