Recent advances in nanoscale zero-valent iron-based materials: Characteristics, environmental remediation and challenges
Recent advances in nanoscale zero-valent iron-based materials: Characteristics, environmental remediation and challenges
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纳米零价铁基材料的最新进展：特点、环境修复和挑战
DOI：
10.1016/j.jclepro.2021.128641
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发表时间：
2021-08-16
影响因子：
11.1
通讯作者：
Yu, Shujun
中科院分区：
文献类型：
--
作者：
Tang, Hao;Wang, Jiaqi;Yu, Shujun
本文介绍了在环境净化领域具有巨大潜力的纳米级零价铁。然而，NZVI很容易积累和氧化，这限制了它去除污染物的能力。因此，本文提出了几种改进的NZVI来克服其不足。研究了NZVI基材料对环境中重金属离子、放射性核素和有机污染物的去除效果，并对其去除行为进行了分析。综述了pH值、离子强度、接触时间、反应温度、干扰离子和腐植酸等因素对nzvi基材料去除污染物的影响。此外，还介绍了NZVI在环境中是有毒的，它在不同的水环境中也是可以回收的，并且具有不同的去除效果。总之，本文对NZVI的改性方法、污染物去除、污染物去除的影响因素以及对环境的影响进行了全面的综述。为NZVI基材料的未来发展提供了强有力的理论基础。
In this paper, nanoscale zero-valent iron (NZVI), which has great potential in environmental purification is introduced. However, NZVI is easy to accumulate and oxidize, which limits its ability to remove pollutants. Hence several modified NZVI are proposed to overcome its shortcomings in this paper. The heavy metal ions, radionuclides and organic pollutants in the environment are removal by NZVI based materials, and their removal behaviors had been analyzed. This paper also reviews the factors affecting the removal of pollutants by NZVIbased materials, such as pH, ionic strength, contact time, reaction temperature, interfering ions and humic acids. In addition, it is also introduced that NZVI is toxic in the environment, and it also can be recovered and has different removal effects in different water environment. In short, this paper gives a comprehensive summary of NZVI, including its modification methods, pollutants removal, influencing factors of pollutants removal and implication to environment. It provides a strong theoretical basis for the future development of NZVI based materials.