• 作者： Tung, Han-Lin; Chang, Yuh-Yaw; Hwang, Ting-Kuo; Wu, Wen-Teng
• 中文摘要： 在生物程序工程中固定化酵素和固定化細胞常用來當做生物性觸媒以進行生化反應。由於這些生物觸媒是以懸浮性的顆粒型式存在於反應器內，因此對於反應器的性能會有實質上的影響。本研究主要是提出一反應器內具有雙網管的改良式氣泡塔(Modified bubble column)以增加傳統氣泡塔內含有懸浮性顆粒時的液相混合效果和氧氣質傳能力。利用混合時間的新方法。本研究是使用褐藻膠顆粒(Calcium alginate beads)當做懸浮顆粒相，其使用量分別為7%(w/w)及 8.7%(w/w)來進行探討。實驗結果，具有雙網管之改良式氣泡塔在液相混合時間縮短了26%，而在氧氣質傳係數則增加了50%。
• 英文摘要： Immobilized enzyme and immobilized whole cell as biocatalysts were commonly applied in bioprocess engineering. The biocatalysts which were suspended in a reactor had a substantial effect on the reactor performance. This work provided a modified bubble column with double net draft tubes to improve the performance of liquid mixing and mass transfer in the column with suspended particles. Mixing time and volumetric mass transfer coefficient were employed as indications for liquid mixing and mass transfer, respectively. A novel method for determining the mixing time was developed by using the pulse test with hot water. Two thermocouples were employed. The suspended particles were calcium alginate beads with 7% (w/w) and 8.7% (w/w) in the column. The mixing time of the proposed column could be 26% lower than that of the conventional bubble column. The mass transfer coefficient could be up to 50% higher than that of the bubble column.
• 中文關鍵字： 液體混合; 質量傳遞; 氣泡塔; 懸浮粒子
• 英文關鍵字： Liquid Mixing; Mass Transfer; Bubble Column; Suspended Particle