Diagnosis and mechanism clarification of cesium adsorption by activated carbon for securing drinking water safety from pollution by radioactive substances

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360214
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Civil and environmental engineering
• Research Institution: Gifu University
• Principal Investigator: LI Fusheng 岐阜大学, 流域圏科学研究センター, 教授 (10332686)
• Co-Investigator(Kenkyū-buntansha): YAMADA Toshiro 岐阜大学, 工学部, 准教授 (30335103) ; KAWAGUCHI Toshiyuki 岐阜大学, 流域圏科学研究センター, 助教 (70467215) ; LI Wenhan 岐阜大学, 流域圏科学研究センター, 講師(研究機関研究員) (90638149) ; WEI Yongfen 岐阜大学, 流域圏科学研究センター, 准教授 (00467218)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 放射性物質 / セシウム / 活性炭吸着 / 生物活性炭 / 水道水の安全 / 高度浄水処理 / 吸着容量 / 生物蓄積

Outline of Final Research Achievements

To secure the safety of drinking water from the pollution by radioactive substances released in considerable quantities to the catchment of drinking water sources (rivers, lakes, dam reservoirs) in the northeastern part of Japan, taking effective countermeasures in drinking water treatment plants is very important. In this study, the performance of activated carbon in adsorbing cesium in its ionic form was investigated through adsorption and desorption experiments with three coal-based activated carbons. By analyzing the data obtained, the capability of activated carbon adsorption in removing cesium was assessed, and the impacts of a few important factors, together with the likely mechanisms, were discussed. The capability of fixation by sediment particles and that of accumulation by bacteria populated in water environment were also quantitatively studied.

Free Research Field

水環境工学、水処理工学