Japan Geoscience Union Meeting 2016

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International Session (Poster)

Symbol A (Atmospheric and Hydrospheric Sciences) » A-GE Geological & Soil Environment

[A-GE05] Subsurface Mass Transport and Environmental Assessment

Mon. May 23, 2016 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall HALL6)

Convener:*Shoichiro Hamamoto(Department of Biological and Environmental Engineering, The University of Tokyo), Yasushi Mori(Graduate School of Environmental and Life Science, Okayama University), Hirotaka Saito(Department of Ecoregion Science, Tokyo University of Agriculture and Technology), Ken Kawamoto(Graduate School of Science and Engineering, Saitama University), Ming Zhang(Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology)

5:15 PM - 6:30 PM

[AGE05-P01] Effects of pH on Arsenic Removal Using Magnesium-Based Adsorbents

*Hajime Sugita1, Ming Zhang1, Terumi Oguma1, Junko Hara1 (1.National Institute of Advanced Industrial Science and Technology)

Keywords:Arsenic Removal, Adsorbent, Magnesium Oxide, Magnesium Hydroxide, pH

In some areas of developing countries, health damage caused by arsenic contained in groundwater used as drinking water has been a serious problem. In order to utilize the ground water as safe drinking water without health risk, it is necessary to remove arsenic. In our previous studies, the arsenic removal tests using several kinds of magnesium compounds (chloride, sulfide, oxide, hydroxide, and carbonate) were carried out and the results clarified that both the oxide and the hydroxide have particularly high arsenic removal performance among the magnesium compounds. However, the effects of pH on the arsenic removal performance of the magnesium compounds have not been sufficiently examined. Therefore, in this study, the arsenic removal behaviors of both magnesium oxide and hydroxide were estimated using the arsenic contaminated water with various pH (pH3 to 12).