Characterization methods of zerovalent iron for water treatment and remediation

Jinxiang Li; Xiaomin Dou; Hejie Qin; Yuankui Sun; Daqiang Yin; Xiaohong Guan

doi:10.1016/j.watres.2018.10.025

Characterization methods of zerovalent iron for water treatment and remediation

Water Res. 2019 Jan 1:148:70-85. doi: 10.1016/j.watres.2018.10.025. Epub 2018 Oct 11.

Authors

Jinxiang Li¹, Xiaomin Dou², Hejie Qin¹, Yuankui Sun¹, Daqiang Yin³, Xiaohong Guan⁴

Affiliations

¹ State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; International Joint Research Center for Sustainable Urban Water System, Tongji University, Shanghai, 200092, PR China.
² College of Environmental Science and Engineering, Beijing Key Laboratory for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing, 100083, PR China.
³ Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; International Joint Research Center for Sustainable Urban Water System, Tongji University, Shanghai, 200092, PR China; Key Laboratory of Yangtze Water Environment of Ministry of the State Education, Tongji University, Shanghai, 200092, PR China.
⁴ State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; International Joint Research Center for Sustainable Urban Water System, Tongji University, Shanghai, 200092, PR China. Electronic address: guanxh@tongji.edu.cn.

PMID: 30347277
DOI: 10.1016/j.watres.2018.10.025

Abstract

Appropriately selecting methods for characterizing the reaction system of zerovalent iron (ZVI) favors its application for water treatment and remediation. Hence, a survey of the available ZVI characterization techniques used in laboratory and field studies are presented in this review for clarifying the characteristic properties, (in-situ) corrosion processes, and corrosion products of ZVI system. The methods are generally classified into four broad categories: morphology characterization techniques, (sub-)surface and bulk analysis mainly via the spectral protocols, along with the (physio)electrochemical alternatives. Moreover, this paper provides a critical review on the scopes and applications of ZVI characterization methodologies from several perspectives including their suitable occasions, availability, (semi-)quantitative/qualitative evaluations, in/ex-situ reaction information, advantages, limitations and challenges, as well as economic and technical remarks. In particular, the characteristic spectroscopic peak locations of typical iron (oxyhydr)oxides are also systematically summarized. In view of the complexity and variety of ZVI system, this review further addresses that different characterization methods should be employed together for better assessing the performance and mechanisms of ZVI-involved systems and thereby facilitating the deployment of ZVI-based installations in real practice.

Keywords: Characterization method; Long-term performance; Permeable reactive barrier; Zerovalent iron; in-situ corrosion; iron (oxyhydr)oxide.

Publication types

Research Support, Non-U.S. Gov't
Review

MeSH terms

Corrosion
Iron
Water Pollutants, Chemical*
Water Purification*

Substances

Water Pollutants, Chemical
Iron