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Hydrogeochemistry of Groundwater and Arsenic Adsorption Characteristics of Subsurface Sediments in an Alluvial Plain, SW Taiwan

Author

Listed:
  • Libing Liao

    (Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China)

  • Jiin-Shuh Jean

    (Department of Earth Sciences, National Cheng Kung University, Tainan 70101, Taiwan)

  • Sukalyan Chakraborty

    (Department of Earth Sciences, National Cheng Kung University, Tainan 70101, Taiwan
    Environmental Science and Engineering Group, Birla Institute of Technology, Mesra, Ranchi 835215, India)

  • Ming-Kuo Lee

    (Department of Geology and Geography, Auburn University, Auburn, AL 36849, USA)

  • Sandeep Kar

    (Department of Earth Sciences, National Cheng Kung University, Tainan 70101, Taiwan)

  • Huai-Jen Yang

    (Department of Earth Sciences, National Cheng Kung University, Tainan 70101, Taiwan)

  • Zhaohui Li

    (Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
    Department of Earth Sciences, National Cheng Kung University, Tainan 70101, Taiwan
    Department of Geosciences, University of Wisconsin-Parkside, Kenosha, WI 53141-2000, USA)

Abstract

Many studies were conducted to investigate arsenic mobilization in different alluvial plains worldwide. However, due to the unique endemic disease associated with arsenic (As) contamination in Taiwan, a recent research was re-initiated to understand the transport behavior of arsenic in a localized alluvial plain. A comprehensive approach towards arsenic mobility, binding, and chemical speciation was applied to correlate groundwater hydrogeochemistry with parameters of the sediments that affected the As fate and transport. The groundwater belongs to a Na-Ca-HCO 3 type with moderate reducing to oxidizing conditions (redox potential = −192 to 8 mV). Groundwater As concentration in the region ranged from 8.89 to 1131 μg/L with a mean of 343 ± 297 μg/L, while the As content in the core sediments varied from 0.80 to 22.8 mg/kg with a mean of 9.9 ± 6.2 mg/kg. A significant correlation was found between As and Fe, Mn, or organic matter, as well as other elements such as Ni, Cu, Zn, and Co in the core sediments. Sequential extraction analysis indicated that the organic matter and Fe/Mn oxyhydroxides were the major binding pools of As. Batch adsorption experiments showed that the sediments had slightly higher affinity for As(III) than for As(V) under near neutral pH conditions and the As adsorption capacity increased as the contents of Fe oxyhydroxides as well as the organic matter increased.

Suggested Citation

  • Libing Liao & Jiin-Shuh Jean & Sukalyan Chakraborty & Ming-Kuo Lee & Sandeep Kar & Huai-Jen Yang & Zhaohui Li, 2016. "Hydrogeochemistry of Groundwater and Arsenic Adsorption Characteristics of Subsurface Sediments in an Alluvial Plain, SW Taiwan," Sustainability, MDPI, vol. 8(12), pages 1-15, December.
    • Handle: RePEc:gam:jsusta:v:8:y:2016:i:12:p:1305-:d:84949
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    Cited by:

    1. Daniele Cecconet & Arianna Callegari & Andrea G. Capodaglio, 2018. "Bioelectrochemical Systems for Removal of Selected Metals and Perchlorate from Groundwater: A Review," Energies, MDPI, vol. 11(10), pages 1-21, October.

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