Simultaneous Saccharification and Fermentation of Rice Straw Pretreated by a Sequence of Dilute Acid and Dilute Alkali at High Dry Matter Content

Sun, Wu; Tao, Wenyi

doi:10.1080/15567036.2010.514649

Cited by 10 publications

(2 citation statements)

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“…3,9,10 Dilute acid hydrolysis of sugar cane bagasse is an efficient and fast method to depolymerize the hemicellulosic fraction from the cell wall into sugar monomers principally xylose and others sugars along with some inhibitory products which are produced due to sugars and lignin breakdown during the reaction. 3,11 While the use of hemicellulosic sugar solution for ethanol production is an important necessity of the overall success of biorefineries, as it represents up to 30% of sugar cane bagasse composition, 7 the microorganism for C5 sugar fermentation are scarce. 12,13 Within this context, the search for a viable microorganism that assimilates C5 sugars remains a challenge.…”

Section: ■ Introductionmentioning

confidence: 99%

“…For 2G ethanol production from sugar cane bagasse, pretreatment is necessary to disrupt the highly recalcitrant structure of the material to unlock complex carbohydrate polymers into monomeric sugars. ,, Dilute acid hydrolysis of sugar cane bagasse is an efficient and fast method to depolymerize the hemicellulosic fraction from the cell wall into sugar monomers principally xylose and others sugars along with some inhibitory products which are produced due to sugars and lignin breakdown during the reaction. , …”

Section: Introductionmentioning

confidence: 99%

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Hemicellulosic Ethanol Production in Fluidized Bed Reactor from Sugar Cane Bagasse Hydrolysate: Interplay among Carrier Concentration and Aeration Rate

Antunes

Chandel

Santos

et al. 2017

ACS Sustainable Chem. Eng.

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Development of an efficient consolidated process is pivotal in order to design industrially viable processes for conversion of lignocellulosic biomass into second generation (2G) ethanol. Aiming to develop process consolidation, here we explored fluidized bed reactor (FBR) for 2G ethanol production from sugar cane bagasse hemicellulosic hydrolysate (SBHH) employing calcium alginate immobilized cells of Scheffersomyces shehatae UFMG-HM 52.2. A 22-full factorial design of experiments was carried out in order to evaluate the effect of aeration rate (0.027, 0.069, and 0.111 min–1) and carrier concentration (55.55, 83.33, and 111.11 g. L–1) on the ethanol yield (Y P/S) and productivity (Q P). Both process variables, when used at the highest level (aeration, 0.11 min–1; immobilized carrier concentration, 111.11 g. L–1), showed maximum ethanol production (Y P/S, 0.26 g/g and Q P 0.17 g·L–1·h–1). Results showed the potential to use this immobilized yeast in a fluidized bed reactor for ethanol production from C5 sugar solution. Repeated batch fermentations in FBR showed stable ethanol yield during 6 batches (288 h) followed by a gradual decrease. The use of immobilized cells in FBR could be conducive to the development of viable 2G ethanol production processes. To the best of our knowledge, this is the first report on 2G ethanol production from immobilized S. shehatae cells employing FBR using SBHH.

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