主催: 日本エネルギー学会
共催: 化学工学会 (エネルギー部会), 大阪大学大学院工学研究科
会議名: 第39回石炭科学会議
回次: 39
開催地: 大阪大学 コンベンションセンター
開催日: 2002/10/29 - 2002/10/30
p. 147-148
The removal of arsenic from coal fly ash was attempted by hydrothermal treatment and chelating agent extraction. When fly ash was hydrothermally-treated at 200℃, ca.80% of arsenic was removed. For the wastewater generated, only the arsenic concentration was over the wastewater quality standards, while those of other elements met the standards. A decomposition product of pectin was found to be an effective aqueous chelating agent. By use of the product, arsenic was also efficiently removed from coal fly ash.