An Alternative Approach to Improve the Butanol Production Efficiency from Sweet Sorghum Stem Juice Using Immobilized Cells Combined with an In Situ Gas Stripping System
نویسندگان
چکیده
The effects of the nitrogen source and buffers used in butanol production with Clostridium beijerinckii TISTR 1461 from sweet sorghum stem juice (SSJ) containing 60 g/L total sugar were first studied this paper. Among various sources (dried spent yeast, urea, ammonium acetate, sulfate), urea was found to be most suitable for production. SSJ supplemented (0.64 g/L) cocktail (KH2PO4, 0.5 g/L; K2HPO4, 2.2 gave highest concentration (PB, 10.13 g/L). Then, capability immobilized C. cells fermentation investigated. Two residual waste materials examined as cell carriers. Bamboo chopstick pieces more appropriate carriers immobilization than cigarette filter tips. PB value on bamboo ~13% higher that Using response surface methodology (RSM), 1.9 cm a carrier loading 1:32 (w/v) optimum conditions Under these conditions, 11.62 g/L. To improve efficiency, gas stripping system (GS) connected fermenter. It (14.02 productivity (QB, 0.29 g/L·h) values improved by ~21% compared using no stripping.
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ژورنال
عنوان ژورنال: Fermentation
سال: 2022
ISSN: ['2311-5637']
DOI: https://doi.org/10.3390/fermentation8090464