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題名 | 以TiO₂光觸媒填充床分解水中腐植酸之研究=Degradation of Humic Acid Using Photoreactor Packed with TiO[feaf] Immobilized on Glass Beads |
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作者 | 陳劭聿; 郭政憲; 錢柏勳; 吳世欽; 林雅芬; 邱求三; Chen, Shao-yu; Kuo, Cheng-hsien; Chian, Bo-shiun; Wu, Shr-chin; Lin, Ya-fen; Chiou, Chyow-san; |
期刊 | 宜蘭大學工程學刊 |
出版日期 | 20070200 |
卷期 | 3 2007.02[民96.02] |
頁次 | 頁97-107 |
分類號 | 445.463 |
語文 | chi |
關鍵詞 | 光觸媒; 填充床; 腐植酸; Photodegradation; Packed-bed reactor; UV/TiO₂/glass; Humic acid; |
中文摘要 | 光觸媒二氧化鈦(TiO₂)經照光後會產生電子電洞,可應用來分解環境中的有機污染物,實驗初步是將TiO₂附著於直徑2 mm的玻璃珠上,經由UV光照射(以UV/TiO₂/glass表示)後,應用於分解水溶液中的腐植酸,實驗結果發現,於溶液pH值為4-8.5時,溶液pH值的增大對UV/TiO₂/glass程序分解腐植酸的效率有正面的助益,且反應溶液中的離子種類及離子強度,對腐植酸分解效率具有影響性。由Langmuir-Hinshelwood模式推導,UV/TiO₂/glass光分解腐植酸的擬一階動力常數k□為0.878 mg/(min L),而UV/TiO₂/glass對腐植酸的吸附平衡常數K□為0.017 L/mg。由Arrhenius方程式推導,UV/TiO₂/glass光分解腐植酸的活化能Ea=21.31 kJ。 |
英文摘要 | This study evaluated the performance of a photoreactor packed with TiO₂/glass, TiO₂ immobilized on glass beads, initiated by UV irradiation, denoted as UV/ TiO₂/glass, to decompose humic acid in an aqueous solution. The photodegradation rate of humic acid by this UV/ TiO₂/glass process was found to obey pseudo first-order kinetics represented by the Langmuir-Hinshelwood model. The experiomental results of this stud also show that the reaction rate was increased with increasing pH value of aqueous solution during the range from 4 to 8.5. The effect of ionic types and strength on the photodegradation rate of humic acid reveals no influence. According to Langmuit-Hinshelwood model and Arrhenius equation, K□, K□ and Ea are 0.878 mg/(min L), 0.017 L/mg, and 21.31 kJ, respectively. |
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