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Biogeochemistry of Iron Enrichment in Groundwater: An Indicator of Environmental Pollution and Its Management

Author

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  • Xuelian Xia

    (Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education of China, College of Water Sciences, Beijing Normal University, Beijing 100875, China)

  • Yanguo Teng

    (Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education of China, College of Water Sciences, Beijing Normal University, Beijing 100875, China)

  • Yuanzheng Zhai

    (Engineering Research Center of Groundwater Pollution Control and Remediation of Ministry of Education of China, College of Water Sciences, Beijing Normal University, Beijing 100875, China)

Abstract

Iron (Fe) is one of the most biochemically active and widely distributed elements and one of the most important elements for biota and human activities. Fe plays important roles in biological and chemical processes. Fe redox reactions in groundwater have been attracting increasing attention in the geochemistry and biogeochemistry fields. This study reviews recent research into Fe redox reactions and biogeochemical Fe enrichment processes, including reduction, biotic and abiotic oxidation, adsorption, and precipitation in groundwater. Fe biogeochemistry in groundwater and the water-bearing medium (aquifer) often involves transformation between Fe(II) and Fe(III) caused by the biochemical conditions of the groundwater system. Human activities and anthropogenic pollutants strongly affect these conditions. Generally speaking, acidification, anoxia and warming of groundwater environments, as well as the inputs of reducing pollutants, are beneficial to the migration of Fe into groundwater (Fe(III)→Fe(II)); conversely, it is beneficial to the migration of it into the media (Fe(II)→Fe(III)). This study describes recent progress and breakthroughs and assesses the biogeochemistry of Fe enrichment in groundwater, factors controlling Fe reactivity, and Fe biogeochemistry effects on the environment. This study also describes the implications of Fe biogeochemistry for managing Fe in groundwater, including the importance of Fe in groundwater monitoring and evaluation, and early groundwater pollution warnings.

Suggested Citation

  • Xuelian Xia & Yanguo Teng & Yuanzheng Zhai, 2022. "Biogeochemistry of Iron Enrichment in Groundwater: An Indicator of Environmental Pollution and Its Management," Sustainability, MDPI, vol. 14(12), pages 1-14, June.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:12:p:7059-:d:834879
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    References listed on IDEAS

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    1. D. A. Hutchins & P. W. Boyd, 2016. "Marine phytoplankton and the changing ocean iron cycle," Nature Climate Change, Nature, vol. 6(12), pages 1072-1079, December.
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    1. Muhammad Yousuf Jat Baloch & Wenjing Zhang & Dayi Zhang & Baig Abdullah Al Shoumik & Javed Iqbal & Shuxin Li & Juanfen Chai & Muhammad Ansar Farooq & Anand Parkash, 2022. "Evolution Mechanism of Arsenic Enrichment in Groundwater and Associated Health Risks in Southern Punjab, Pakistan," IJERPH, MDPI, vol. 19(20), pages 1-18, October.
    2. Shuai Lu & Yimeng Yang & Xiaosi Su & Kaining Yu & Xinzhou Wang, 2022. "Arsenic Adsorption and Desorption in Various Aqueous Media in the Nearshore Zone and Influencing Factors," Sustainability, MDPI, vol. 14(17), pages 1-17, September.

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