本研究應用海藻膠(Gel)各自包覆活性碳、沸石、麥飯石、大理石等粉末,交聯成海藻膠-活性碳(Gel- AC)、沸石(Gel-Zeo)、麥飯石(Gel-PA)、大理石(Gel-Ma)等球形或圓柱形吸附劑顆粒,進行魚缸水中代謝廢物和/或毒素,即氨或亞硝酸離子,之去除。實驗中,改變Gel、吸附劑粉末用量比,以及溫度等變數,探討其對氨-氮或亞硝酸-氮吸附量的影響,並與各種吸附劑顆粒或粉末相比較,以尋求最佳配方。此最佳配方的交聯聚合物,經純化、烘乾製成環保吸附劑,進行吸附帶正電之魚類代謝廢物氨氮或帶負電之亞硝酸氮;結果證明在這些粒子中添加海藻膠,的確可以各自促進其對氨或亞硝酸鹽離子的吸附能力。
In this study, a method has been designed for making spherical or cylindrical microencapsulation of activated carbons(AC)、zeolites(Zeo)、porphyritic andesites(PA)、marbles(Ma) particles from powder for use in the removal of metabolic wastes and/or toxins(i.e. ammonia or nitrite ions)from fish tank water. This bench-scale method was able to make better uniformity in particle size, and at a higher production rate. The material properties such as particle size and electromicroscopy of surface morphology were characterized. The performance characteristics of these self-prepared particles were also evaluated against the commercially available adsorbent particles. The effect of added mass of alginic acid in these particles on the adsorptive capacity of selected ammonia or nitrite ions was proved to be promotive, and the alginate-binded layer of these particles could enhance the adsorptive capacity of solute ions.