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| Adsorption Properties of D113 Ion-exchange Resin on Mn(Ⅱ) |
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Received:June 08, 2012
Revised:June 08, 2012
Accepted:June 12, 2012
Published Online:November 26, 2012
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| DOI：10.3969/j.issn.1007-7545.2012.12.004 |
| KeyWord:D113 resin; Mn(Ⅱ); adsorption; kinetics |
| Author | Institution |
| SONG Xiu-ling |
长安大学环境科学与工程学院 |
| XING Jian-yu |
长安大学环境科学与工程学院 |
| WANG Chun-yan |
长安大学环境科学与工程学院 |
| ZHANG Cai-feng |
长安大学环境科学与工程学院 |
| QIAN Hui |
长安大学环境科学与工程学院 |
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| Abstract: |
| The adsorption of D113 resin on Mn(Ⅱ) was investigated at room temperature. The results show that the removal rate of Mn (Ⅱ) in aqueous solution reaches 99% and the adsorption capacity of Mn (Ⅱ) is 136.98 mg/g on the conditions including the pH value of the aqueous solution of 6.5~7.0 and the adsorption duration of 120 min. The desorption rate of Mn (Ⅱ) reaches 100% when the concentration of hydrochloric acid is 3~4 mol/L. The adsorption curve of D113 resin on Mn (Ⅱ) agrees well with the Langmuir and the Freundlich isothermal adsorption equation, and the adsorption kinetic data well fit the HO pseudo-second-order rate equation. The internal diffusion coefficient increases with the rise of solution pH value and the concentration of Mn(II). |
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