| Title: | Application of iron sulfide particles for groundwater and soil remediation: A review |
| Address: | "Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China. Environmental Engineering Program, Department of Civil Engineering, Auburn University, Auburn, AL, 36849, USA. Electronic address: zhaodon@auburn.edu" |
| DOI: | 10.1016/j.watres.2015.11.063 |
| ISSN/ISBN: | 1879-2448 (Electronic) 0043-1354 (Linking) |
| Abstract: | "Rapid industrialization and urbanization have resulted in elevated concentrations of hazardous inorganic and organic contaminants in groundwater and soil, which has become a paramount concern to the environment and the public health. In recent years, iron sulfide (FeS), a major constituent of acid-volatile sulfides, has elicited extensive interests in environmental remediation due to its ubiquitous presence and high treatment efficiency in anoxic environment. This paper provides a comprehensive review on recent advances in: (1) synthesis of FeS particles (including nanoscale FeS); and (2) reactivity of FeS towards a variety of common environmental contaminants in groundwater and soil over extended periods of time, namely, heavy metals (Hg(II), Cu(II), Pb(II), and Cr(VI)), oxyanions (arsenite, arsenate, selenite, and selenate), radionuclides (e.g., uranium (U) and neptunium (Np)), chlorinated organic compounds (e.g., trichloroethane, trichloroethylene, and p-chloroaniline), nitroaromatic compounds, and polychlorinated biphenyls. Different physiochemical and biological methods for preparing FeS with desired particle size, structure, and surface properties are discussed. Reaction principles and removal effectiveness/constraints are discussed in details. Special attention is placed to the application of nanoscale FeS particles because of their unique properties, such as small particle size, large specific surface area, high surface reactivity, and soil deliverability in the subsurface. Moreover, current knowledge gaps and further research needs are identified" |
| Keywords: | "Environmental Restoration and Remediation/methods Groundwater/*chemistry Iron/*chemistry Soil Pollutants/*chemistry Sulfides/*chemistry Water Pollutants, Chemical/chemistry Groundwater contamination Iron sulfide Nanoparticle Pollution control Remediation;" |
| Notes: | "MedlineGong, Yanyan Tang, Jingchun Zhao, Dongye eng Research Support, Non-U.S. Gov't Review England 2015/12/29 Water Res. 2016 Feb 1; 89:309-20. doi: 10.1016/j.watres.2015.11.063. Epub 2015 Dec 7" |
