Mechanistic kinetic models describing impact of early attachment between Chlorella vulgaris and polyurethane foam material in fluidized bed bioreactor on lipid for biodiesel production
學年 106
學期 2
出版（發表）日期 2018-07-01
作品名稱 Mechanistic kinetic models describing impact of early attachment between Chlorella vulgaris and polyurethane foam material in fluidized bed bioreactor on lipid for biodiesel production
作品名稱（其他語言）
著者 Wen-Da Oh; Ainur-Assyakirin Mohd-Sahib; Chii-Dong Ho; Wen-Nee Tan; Yoshimitsu Uemura; Lam Man-Kee; Yeek-Chia Ho
單位
出版者
著錄名稱、卷期、頁數 Algal Research 33, p.209-217
摘要 The fundamental mechanism of early attachment between Chlorella vulgaris microalgae cells and polyurethane foam support material was unveiled prior to the kinetic study and optimization of operational bed packing volume in fluidized bed bioreactor. All aiming to enhance the lipid accumulation for sustainable biodiesel production. The two-step early attachment mechanism was found starting with the short-range Lewis acid-base interaction before the cells migrating toward the surface of support material induced by the electrostatic attractive force. This mechanism was mainly propelled by the chemisorption stemming from the interactions of cell-to-cell repulsion and cell-to-support material attraction. The electrostatic attractive interaction transpired on the surface of support material was also maneuvering the kinetics of formation of early attachment as reflected by the zeta potential trend via the sequence of pH 9 < pH 7 < pH 5 > pH 3. The rapid early attachment formation in pH 5 culture medium in fluidized bed bioreactor had led to the highest weight of attached growth microalgae biomass attainability as opposed to the other pH mediums. By exploiting the pH 5 culture medium, the maximum yields of microalgae biomass, lipid and later biodiesel were harvested from the bioreactor packed with 6% (v/v) of polyurethane foam support material, confirming optimum packing volume. These yields were initially observed increasing with the increase of packing volume due to the increasing surface area of support material; and unfortunately, decreasing after 6% (v/v) of packing volume due to the congestion factor.
關鍵字 Early attachment mechanism;Adsorption kinetics;Chlorella vulgaris;Polyurethane foam;Fluidized bed bioreactorLipid
語言 en_US
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
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