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Open AccessFeature PaperReview

Water Treatment Using Metallic Iron: A Tutorial Review

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School of Earth Science and Engineering, Hohai University, Fo Cheng Xi Road 8, Nanjing 211100, China
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Biosystems and Environmental Engineering Research Group, Department of Soil Science and Agricultural Engineering, Faculty of Agriculture, University of Zimbabwe, P.O. Box MP167 Harare, Zimbabwe
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Faculty of Health Sciences, Campus of Banekane, Université des Montagnes, P.O. Box 208 Bangangté, Cameroon
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Department of Applied Geology, University of Göttingen, Goldschmidtstraße 3, D-37077 Göttingen, Germany
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Department of Water and Environmental Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha P.O. Box 447, Tanzania
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Author to whom correspondence should be addressed.
Processes 2019, 7(9), 622; https://doi.org/10.3390/pr7090622
Received: 15 August 2019 / Revised: 10 September 2019 / Accepted: 12 September 2019 / Published: 14 September 2019
Researchers and engineers using metallic iron (Fe0) for water treatment need a tutorial review on the operating mode of the Fe0/H2O system. There are few review articles attempting to present systematic information to guide proper material selection and application conditions. However, they are full of conflicting reports. This review seeks to: (i) Summarize the state-of-the-art knowledge on the remediation Fe0/H2O system, (ii) discuss relevant contaminant removal mechanisms, and (iii) provide solutions for practical engineering application of Fe0-based systems for water treatment. Specifically, the following aspects are summarized and discussed in detail: (i) Fe0 intrinsic reactivity and material selection, (ii) main abiotic contaminant removal mechanisms, and (iii) relevance of biological and bio-chemical processes in the Fe0/H2O system. In addition, challenges for the design of the next generation Fe0/H2O systems are discussed. This paper serves as a handout to enable better practical engineering applications for environmental remediation using Fe0. View Full-Text
Keywords: iron corrosion products; laboratory experiments; pilot tests; removal mechanisms; water treatment; zero-valent iron iron corrosion products; laboratory experiments; pilot tests; removal mechanisms; water treatment; zero-valent iron
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MDPI and ACS Style

Hu, R.; Gwenzi, W.; Sipowo-Tala, V.R.; Noubactep, C. Water Treatment Using Metallic Iron: A Tutorial Review. Processes 2019, 7, 622. https://doi.org/10.3390/pr7090622

AMA Style

Hu R, Gwenzi W, Sipowo-Tala VR, Noubactep C. Water Treatment Using Metallic Iron: A Tutorial Review. Processes. 2019; 7(9):622. https://doi.org/10.3390/pr7090622

Chicago/Turabian Style

Hu, Rui; Gwenzi, Willis; Sipowo-Tala, Viviane R.; Noubactep, Chicgoua. 2019. "Water Treatment Using Metallic Iron: A Tutorial Review" Processes 7, no. 9: 622. https://doi.org/10.3390/pr7090622

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