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題 名 | Equilibrium Study on Chromium (Ⅲ) Ion Removal by Adsorption onto Rice Hull Ash |
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作 者 | Wang, Li-hua; Lin, Chun-i; | 書刊名 | Journal of the Taiwan Institute of Chemical Engineers |
卷 期 | 40:1 2009.01[民98.01] |
頁 次 | 頁110-112 |
分類號 | 460.02 |
關鍵詞 | Adsorption; Chromium ion; Equilibrium; Rice hull ash; |
語 文 | 英文(English) |
英文摘要 | Abstract The adsorption of chromium (III) ion from aqueous solution by rice hull ash at equilibrium was investigated. The adsorption data was found to follow both the Freundlich and Langmuir models. Thermodynamic parameters for the adsorption process, that is, KC, ΔG, ΔH and ΔS have also been calculated. The positive value of ΔS and negative values of ΔG displayed the spontaneous nature of this adsorption system, while the positive value of ΔH pointed out this is an endothermic process. |
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