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水產研究(1993年創刊)

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  • 點閱: 790
  • 日期: 2019-07-19
水產研究(1993年創刊)-斜發沸石和絲光沸石應用在水產養殖吸附氨氮研究
主題: 斜發沸石和絲光沸石應用在水產養殖吸附氨氮研究
摘要(中):
本研究使用斜發沸石和絲光沸石兩種應用及研究最廣的天然沸石,針對不同的總氨氮濃度、鹽度、pH,建立 72 hr的氨氮吸附動態曲線,結果顯示絲光沸石的除氨能力較佳,相同總氨氮濃度,斜發沸石添加量約需絲光沸石的五倍才能達到相近的吸附量。鹽度是干擾沸石吸附氨氮的主要因子,鹽度 5 psu 即會明顯降低沸石吸附量,斜發沸石和絲光沸石的氨氮吸附量在海水離子干擾下,約僅剩淡水條件的 30 和 20%,斜發沸石受鹽度影響較小,且兩種沸石在鹽度 5–30 psu 各組間,無顯著差異 (p > 0.05)。本實驗 pH 區間為4–10,斜發沸石在 pH 6 有最佳氨氮吸附表現,絲光沸石則在 pH 5–7 吸附效果最好。根據上述結果及成本考量,絲光沸石為較理想的氨氮吸附劑,本試驗亦建立總氨氮吸附量線性回歸曲線,依據淡水養殖物種的氨氮安全濃度,提供處理總氨氮 2–10 ppm 的沸石粉使用量依據。
出版日期: 2018/6/30
標題title(英): A Study of Ammonium Absorption by Using Clinoptilolite and Mordenite for Aquaculture Applications
作者: 郭裔培‧鄭金華‧陳紫媖
卷別: 26
期別: 1
頁碼: 73-82
作者 auther(英): I-Pei Kuo, Jin-Hua Cheng and Tzyy-Ing Chen
摘要abstract(英): In this study, we used clinoptilolite and mordenite, which are the most widely used and researched natural zeolites, to establish 72-hour dynamic adsorption curves of ammonium at different total ammonia nitrogen (TAN) concentrations, salinity levels and pH values. The results showed that mordenite is more efficient for ammonium removal than clinoptilolite. At equal TAN concentrations, it took five times as much clinoptilolite as mordenite to achieve similar amounts of ammonium adsorption. The salinity level was a major interference factor in zeolite ammonium adsorption, with a salinity level of only 5 psu reducing the adsorption capability markedly. Specifically, the adsorption capabilities of clinoptilolite and mordenite were 30 and 20% of their respective capabilities in fresh water, with clinoptilolite performing better in the face of interference due to salinity. In addition, there were no significant differences between in the adsorption capacities of either clinoptilolite or mordenite as the salinity levels were increased from 5–30 psu (p > 0.05). The range of pH was 4–10 in this study, and the best performances of clinoptilolite and mordenite were at pH 6 and 5–7, respectively. According to these results and the costs of the zeolites, mordenite is a better ammonium adsorbent than clinoptilolite. We also established linear regressions for reduced TAN and provided a basis for using mordenite to treat TAN at 2–10 ppm, based on the safe concentrations of ammonia nitrogen for fresh water aquaculture species.
使用語言: 中文
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