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COLUMN REACTORS IN FLUIDIZED BED CONFIGURATION AS INTENSIFICATION SYSTEM FOR XYLITOL AND ETHANOL PRODUCTION FROM NAPIER GRASS (PENNISETUM PURPUREUM)
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2021-03-25 , DOI: 10.1016/j.cep.2021.108399
F.A.F. Antunes , P.E.M. Machado , T.M. Rocha , Y.C.S. Melo , J.C. Santos , S.S. da Silva

Currently, the modern concept biorefinery industries require a consolidated, robust and cost-effective bioprocess applied to multi-products manufacturing. In alignment, this work presents biomass pretreatment of Pennisetum purpureum grass and integrated developments for carbohydrates portions utilization as carbon source for xylitol and ethanol production in intensified process conducted in column reactor with fluidized bed configuration, homogenized simply by air insertion. Primarily, by using hemicellulosic portion from acid hydrolysis, xylitol production was evaluated in column fluidized bed reactor by using the novel-wild Brazilian yeast Candida Tropicalis UFMGBX12-a verifying YP/S and Qp of 0.26 g/g and 0.06 g/L.h, respectively. Forwardly, the remaining celulignin from the acid hydrolysis was subjected to alkaline pretreatment, followed by Semi-Simultaneous saccharification and Fermentation process, in an intensification approach performed in column fluidized bed reactor, applied to ethanol production by Scheffersomyces Shehatae UFMG-HM 52.2. Enzymatic hydrolysis of pretreated biomass comprised 90% of glucose yield in 72h of saccharification, while ethanol productivity of 0.21 g/L.h, was found in 24 h of fermentation process. These new developments conferred potential use of Pennisetum purpureum grass as carbon source for xylitol and ethanol production in column reactor towards sustainable intensification process implementation.



中文翻译:

流化床配置中的柱状反应器作为强化造纸草狼尾草)中二甲苯和乙醇生产的强化系统

当前,现代概念的生物精炼行业需要用于多产品制造的整合,健壮和具有成本效益的生物工艺。一致地,这项工作提出了草草的生物质预处理以及在流化床配置的柱式反应器中通过强化工艺简单地通过空气插入使碳水化合物部分用作木糖醇和乙醇生产的碳源的综合发展。首先,通过使用酸水解过程中的半纤维素部分,通过使用新型野生巴西酵母假丝酵母热带假丝酵母UFMGBX12-a验证Y P / S和Q p,在柱流化床反应器中评估木糖醇的生产。分别为0.26 g / g和0.06 g / Lh。向前,酸水解过程中剩余的celulignin进行碱预处理,然后在柱流化床反应器中进行的强化方法中,进行半同时糖化和发酵过程,并通过Sheeffersomyces Shehatae UFMG-HM 52.2应用于乙醇生产。在糖化72小时内,预处理过的生物质的酶促水解包括90%的葡萄糖产率,而在发酵过程的24小时内发现的乙醇生产率为0.21 g / Lh。这些新的发展赋予潜在的用途,使用紫草草作为塔式反应器中木糖醇和乙醇生产的碳源,以实现可持续的强化过程。

更新日期:2021-03-25
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