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Isopropanol-butanol-ethanol production by cell-immobilized vacuum fermentation.
Ferreira Dos Santos Vieira, Carla; Duzi Sia, Augusto; Maugeri Filho, Francisco; Maciel Filho, Rubens; Pinto Mariano, Adriano.
Afiliação
  • Ferreira Dos Santos Vieira C; Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
  • Duzi Sia A; Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
  • Maugeri Filho F; Bioprocess and Metabolic Engineering Laboratory (LEMeB), School of Food Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
  • Maciel Filho R; Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil.
  • Pinto Mariano A; Laboratory of Optimization, Design, and Advanced Control - Fermentation Division (LOPCA-Ferm), School of Chemical Engineering, University of Campinas (UNICAMP), Campinas, SP, Brazil. Electronic address: adpm@unicamp.br.
Bioresour Technol ; 344(Pt B): 126313, 2022 Jan.
Article em En | MEDLINE | ID: mdl-34798259
The Isopropanol-Butanol-Ethanol productivity by solventogenic clostridia can increase when cells are immobilized on low-cost, renewable fibrous materials; however, butanol inhibition imposes the need for dilute sugar solutions (less than40 g/L). To alleviate this problem, the in-situ vacuum product recovery technique was applied to recover IBE in repeated-batch cultivation of Clostridium beijerinckii DSM 6423 immobilized on sugarcane bagasse. Five repeated batch cycles were conducted in a 7-L bioreactor containing P2 medium (∼60 g/L glucose) and bagasse packed in 3D-printed concentric annular baskets. In three cycles, glucose was consumed by 86% on average, the IBE productivity was 0.35 g/L∙h or 30% and 17% higher relative to free- and immobilized (without vacuum)-cell cultures. Notably, the product stream contained 45 g/L IBE. However, the fermentation was unsatisfactory in two cycles. Finally, by inserting a fibrous bed with hollow annuli in a vacuum fermentation, this work introduces the concept of an internal-loop boiling-driven fibrous-bed bioreactor.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: 2-Propanol / Butanóis Idioma: En Revista: Bioresour Technol Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: 2-Propanol / Butanóis Idioma: En Revista: Bioresour Technol Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido