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題名 | 觸媒沸石去除液相大腸桿菌之研究=Study of Antibacterial Reactions of Modified Zeolite Catalysts in the Liquid Phase |
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作者 | 謝祝欽; 李詩磬; 鄭鑫漢; 黃憲聖; 陳玟璇; 李孟蓉; 郭佩晴; | 書刊名 | 科技學刊. 科技類 |
卷期 | 20:1 2011.10[民100.10] |
頁次 | 頁29-37 |
分類號 | 445.982 |
關鍵詞 | 環境水質; 觸媒沸石; 抗菌; Water quality; Gatalyst-zeolite; Antibacterial; |
語文 | 中文(Chinese) |
中文摘要 | 環境各類水質有其管制標準,其中一項為大腸桿菌,其菌數超過某一特定值,將影響水體適用性。為維持水體品質穩定度,本研究以沸石為載體並添加銀或銅觸媒製備抗菌材,完成材料特性分析後即進行液相抗菌實驗 (antibacterial experiments),整體而言以 Ag2O-zeolite抗菌率優於 CuO-zeolite。使用一階動力模式可計算反應速率常數 (k),本研究製備之 CuO-zeolite與 Ag2O-zeolite (1、2、3、10 wt%) 的 k值約為 0.16至 1.98 (1/hr),且抗菌反應符合一階動力模式。 Ag2O-zeolite (1、2、3、10 wt%) 抗菌能力 (antibacterial capacity) 為 380至 1,089 (CFU/g),CuO-zeolite (1、2、3、10 wt%) 抗菌能力為 1,024至 1,143 (CFU/g)。計算觸媒沸石的抗菌能力,將可預估某水體若大腸桿菌超標時,去除其過多的大腸桿菌之使用量,使水質中大腸桿菌 (CFU/100 mL) 符合法規標準,調查結果可作為評估水質適用性及其改善之重要依據。 |
英文摘要 | In the environment, the EPA in Taiwan has regulated control standards for various water bodies. One of the indexes was E. coli which might have an effect on the applicability of water bodies. As the Colony-Forming Unit (CFU) of E. coli is above a specific value, the water body is inapplicable to use. In order to maintain the stability of water quality, we had to make different types of catalytic modified materials by adding silver or copper catalysts on zeolite carriers in order to carry out antibacterial experiments in the liquid phase after basic characteristic analysis. There was a 60% antibacterial efficiency when the initial concentration of liquid phase experiments of E. coli in CuO-zeolite (10 wt %) was 5.5 (109 CFU/mL) at 180 min, and 99% antibacterial efficiency in Ag2O-zeolite (10 wt%). Overall antibacterial efficiency with Ag2O-zeolite (10 wt%) was better than CuO-zeolite (10 wt %) in the same impregnation concentration. The antibacterial reaction conformed with this study and the constant reaction rate (K) in CuO-zeolite was 0.16 to 0.38 (1/hr) by first-order dynamic model; Ag2O-zeolite was 1.33 to 1.98. After all experiments were done, the antibacterial capacity of CuO-zeolite (1, 2, 3 wt %) were 380 to 1089 (CFU/g) ; Ag2O-zeolite (1, 2, 3 wt %) were 1024 to 1043 (CFU/g) . To calculate the antibacterial capacity of catalytic modified zeolite and used it as a parameter to improve the water quality. As E. coli concentration was over-standard water bodies we could use the value of antibacterial capacity to determine how much zeolite should be added to make the water quality in the EDA reach a standard value. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。