Abstract In this study, a new application of immobilized microbial cells for biodegradation of furfural in aqueous solution was investigated using spouted bed bioreactor. Pseudomonas sp., as a single type specie as well as activated sludge as mixed cultures were individually immobilized in 3 different bio-carrier matrices which were prepared by reinforcement of natural polysaccharides including sodium alginate, guar-gum and agar-agar with polyvinyl alcohol. The results demonstrated a complete removal (100%) of furfural from aqueous solutions using immobilized cells (IC) of Pseudomonas sp., and mixed cultures as well. Recycling of used IC for furfural removal in successive treatment cycles provided significant removal rates up to 96%. In general, results revealed that IC exhibited better performance compared to free cells in regard with the removal rate of furfural, duration of biodegradation process, as well as the ability for recycling and sustaining the high concentrations of furfural.

中文翻译：

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单一和混合固定化细胞在糠醛生物降解中的新应用

摘要 本研究采用喷射床生物反应器研究了固定化微生物细胞在水溶液中糠醛生物降解中的新应用。假单胞菌作为单一类型物种以及作为混合培养物的活性污泥分别固定在 3 种不同的生物载体基质中，这些基质是通过用聚乙烯醇增强天然多糖（包括海藻酸钠、瓜尔胶和琼脂）制备的。结果表明，使用固定化假单胞菌 (Pseudomonas sp.) 和混合培养物从水溶液中完全去除 (100%) 糠醛。在连续的处理周期中回收用于去除糠醛的用过的 IC 提供了高达 96% 的显着去除率。一般来说，