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フミン酸へのセレン収着挙動における初期セレン濃度・固液比の影響
https://repo.qst.go.jp/records/53777
https://repo.qst.go.jp/records/537772a5b1f82-57e0-4b76-9b58-0b74ab8e99bb
| Item type | 会議発表論文 / Conference Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-12-21 | |||||
| タイトル | ||||||
| タイトル | フミン酸へのセレン収着挙動における初期セレン濃度・固液比の影響 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
| 資源タイプ | conference paper | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
石川, 奈緒
× 石川, 奈緒× 田上, 恵子× 内田, 滋夫× 石川 奈緒× 田上 恵子× 内田 滋夫 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Selenium-79 is a fission product with long half-life, about 1.1 million years. Therefore, Se is an important pollutant for radioactive waste management. Recently, some researchers have studied Se sorption onto many types of soils and reported that soil organic matter has significant effect on Se sorption onto soil. However, no study has been carried out for Se sorbability onto soil organic matter. In this study, Se sorption behavior on humic acid (HA), which is one of the soil organic matters, was investigated as a function of initial Se concentration and solid/liquid ratio. A batch sorption test using 75Se was carried out to obtain the data of Se sorption behavior on HA, while changing initial Se concentration (10 - 300 µg/L) and solid/liquid ratio (0.01 - 0.1). In order to determine the time required to reach the sorption equilibrium, the sample suspensions were destructively taken at several times from three hours to twenty five days after the addition of Se in HA suspensions. Each sample suspension was filtered through a 0.45-µm membrane filter. Gamma rays of 75Se in the filtrate were measured with a NaI scintillation counter to determine its activity concentration. The amount of sorbed Se increased linearly with increasing initial Se concentration. In addition, the amount of sorbed Se decreased exponentially with increasing solid/liquid ratio. With these empirical relationships, the empirical equation of the amount of sorbed Se as a function of initial Se concentration and solid/liquid ratio could be determined. The calculated results and the measured values showed a high correlation coefficient of 0.98. |
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| 書誌情報 |
Proceedings of the Workshop on Environmental Radioactivity (KEK Proceedings) 巻 7, p. 178-182, 発行日 2006-12 |
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