Earth Science Frontiers ›› 2022, Vol. 29 ›› Issue (3): 64-75.DOI: 10.13745/j.esf.sf.2022.1.37

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Typical redox-sensitive components in groundwater systems: Research highlights and trends

GUO Huaming1,2(), GAO Zhipeng1,2, XIU Wei3   

  1. 1. School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, China
    2. MOE Key Laboratory of Groundwater Circulation and Environment Evolution, China University of Geosciences (Beijing), Beijing 100083, China
    3. Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China
  • Received:2021-11-12 Revised:2022-02-10 Online:2022-05-25 Published:2022-04-28


Although C, N, S cycling is essential to cycling of redox-sensitive components and energy flux in groundwater systems, the mechanism of its couplings to Fe-Mn cycling and relavent functional microbial metabolic pathway in controlling the transport and transformation of redox-sensitive components is poorly understood. Based on comprehensive national and international literature surveys, this paper divided the groundwater redox-sensitive components into oxic condition-related enrichment type (oxic type, enriched in oxic groundwater) and reducing condition-related enrichment type (reducing type, enriched in reducing groundwater), and systematically sorted out C, N, and/or S cycling-driven transport and transformation processes of typical redox-sensitive components (U, Cr, Fe, As as main examples) in groundwater systems. The research highlights of the relevant research fields mainly included coupling of C, N cycling and transport-transformation of typical redox-sensitive components, C, S cycling-driven mechanisms for the mobilization of reducing type components and the immobilization of the oxic type components, hydrogeochemical interactions bewteen typical redox-sensitive components, and microbe-mediated transformation and enrichment of typical redox-sensitive components. The research trends revealed by this study were metabolic pathway-based C, N, S cycling and its control on the transformation processes and enrichment mechanisms of typical redox-sensitive components in groundwater systems.

Key words: aquifer system, arsenic, uranium, microbe, isotope, water-rock interaction

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