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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/26705

Title: Efficacy of Yucca schidigera extract for ammonia reduction in freshwater: Effectiveness analysis and empirical modeling approach
Authors: Roberto A. Santacruz-Reyes;Yew-Hu Chien
Contributors: NTOU:Department of Aquaculture
國立臺灣海洋大學:水產養殖學系
Keywords: Yucca schidigera;Aquaculture;Ammonia reduction;Water quality;Empirical model
Date: 2009-12-01
Issue Date: 2011-10-21T02:18:22Z
Publisher: Aquaculture
Abstract: Abstract:This study investigates the potential and effectiveness of Yucca schidigera extract (YUPE) for ammonia reduction in freshwater. A concentration-response experiment was conducted to determine the effect of different concentrations of YUPE at 0, 18, 36, 72 and 108 mg/L on total ammonia nitrogen (TAN) at 0, 1, 3 and 9 mg/L. The effectiveness analysis showed that at higher YUPE concentrations, higher TAN reduction was observed. Likewise, an increase in elapsed time also increased TAN reduction. The fraction of reduced TAN at each elapsed time showed that TAN reduction was highest during 12–24 h, and decreased thereafter at 12-h interval presumably due to exhaustion of YUPE's efficacy. An empirical model involving initial TAN, YUPE concentration and time was successfully constructed with high R2 (0.9784). Practical applications of this model on ammonia management strategies were formulated and exemplified for Nile tilapia Oreochromis niloticus rearing environment.
Relation: 297(1-4), pp.106-111
URI: http://ntour.ntou.edu.tw/handle/987654321/26705
Appears in Collections:[水產養殖學系] 期刊論文

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