Econ. Environ. Geol. 2005; 38(5): 571-577

Published online October 31, 2005

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Removal of As(III) in Contaminated Groundwater Using Iron and Manganese Oxide-Coated Materials

Ju-Yong Kim1, Yoon-Hyeong Choi1, Kyoung-Woong Kim1*, Joo Sung Ahn2 and Dong Wook Kim3

1Arsenic Geoenvironment Laboratory(NRL), Dep. of Environmental Science & Engineering, Gwangju Institute of Science & Technology, Gwangju 500-712, Korea
2Groungwater and Geothermal Resource Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea
3Deparment of Environmental Engineering, Kongju National University, Kongju 314-701, Korea

Correspondence to :

Kyoung-Woong Kim

kwkim@gist.ac.kr

Received: August 9, 2005; Accepted: September 22, 2005

Abstract

Permeable reactive barrier using iron oxide coated sand is one of effective technologies for As(V) contaminated groundwater. However, this method is restricted to As(III), because As(III) species tends to be more weakly bound to adsorbent. In order to overcome the limitation of iron oxide coated sand application to As(III) contaminated groundwater, manganese oxide materials as promoter of As(III) removal were combined to the conventional technology in this study. For combined use of iron oxide coated sand and manganese oxide coated sand, two kinds of removal methods, sequential removal method and simultaneous removal method, were introduced. Both methods showed similar removal efficiency over 85% for 6 hrs. However, the sequential method converted the As contaminated water to acid state (pH4.5), on the contrary, the simultaneous method maintained neutral state (pH 6.0). Therefore, simultaneous As removal
method was ascertained as a suitable treatment technology of As contaminated water. Moreover, for more effective As(III) remediation technique, polypropylene textile which has the characteristics of high surface area, low specific gravity and flexibility was applied as alternative material of sand. The combined use of coated polypropylenes by simultaneous method showed much more prominent and rapid remediation efficiency over 99% after 6 hrs; besides, it has practical advantages in replacement or disposal of adsorbent for simple conventional removal device.

Keywords arsenic, remediation, manganese oxide, iron oxide, polypropylene

Article

Econ. Environ. Geol. 2005; 38(5): 571-577

Published online October 31, 2005

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Removal of As(III) in Contaminated Groundwater Using Iron and Manganese Oxide-Coated Materials

Ju-Yong Kim1, Yoon-Hyeong Choi1, Kyoung-Woong Kim1*, Joo Sung Ahn2 and Dong Wook Kim3

1Arsenic Geoenvironment Laboratory(NRL), Dep. of Environmental Science & Engineering, Gwangju Institute of Science & Technology, Gwangju 500-712, Korea
2Groungwater and Geothermal Resource Division, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea
3Deparment of Environmental Engineering, Kongju National University, Kongju 314-701, Korea

Correspondence to:

Kyoung-Woong Kim

kwkim@gist.ac.kr

Received: August 9, 2005; Accepted: September 22, 2005

Abstract

Permeable reactive barrier using iron oxide coated sand is one of effective technologies for As(V) contaminated groundwater. However, this method is restricted to As(III), because As(III) species tends to be more weakly bound to adsorbent. In order to overcome the limitation of iron oxide coated sand application to As(III) contaminated groundwater, manganese oxide materials as promoter of As(III) removal were combined to the conventional technology in this study. For combined use of iron oxide coated sand and manganese oxide coated sand, two kinds of removal methods, sequential removal method and simultaneous removal method, were introduced. Both methods showed similar removal efficiency over 85% for 6 hrs. However, the sequential method converted the As contaminated water to acid state (pH4.5), on the contrary, the simultaneous method maintained neutral state (pH 6.0). Therefore, simultaneous As removal
method was ascertained as a suitable treatment technology of As contaminated water. Moreover, for more effective As(III) remediation technique, polypropylene textile which has the characteristics of high surface area, low specific gravity and flexibility was applied as alternative material of sand. The combined use of coated polypropylenes by simultaneous method showed much more prominent and rapid remediation efficiency over 99% after 6 hrs; besides, it has practical advantages in replacement or disposal of adsorbent for simple conventional removal device.

Keywords arsenic, remediation, manganese oxide, iron oxide, polypropylene

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

    Stats or Metrics

    Share this article on

    • kakao talk
    • line

    Related articles in KSEEG

    Economic and Environmental Geology

    pISSN 1225-7281
    eISSN 2288-7962
    qr-code Download