Real-Time Monitoring of Bioethanol Fermentation with Industrial Musts Using Mid-Infrared Spectroscopy

Autor(es)

Rodrigues, Kaio C. S. ^[1] ; Sonego, Jorge L. S. ^[1] ; Bernardo, Andre ^[1] ; Ribeiro, Marcelo P. A. ^[1] ; Cruz, Antonio J. G. ^[1] ; Badino, Alberto C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Grad Program Chem Engn, CP 676, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Industrial & Engineering Chemistry Research; v. 57, n. 32, p. 10823-10831, AUG 15 2018.
• Citações Web of Science: 0

Resumo

The development of rapid, accurate, and cost-effective technologies for process monitoring is highly desirable in the biofuels sector. Here, a technique based on the combination of Fourier transform mid-infrared (FT-MIR) spectroscopy and partial least-squares (PLS) regression was evaluated as a tool for real-time monitoring of the process for bioethanol production from sucrose by Saccharomyces cerevisiae. Industrial musts composed of juice and molasses of sugar cane and sweet sorghum juice were used in the fermentations. Considering the chemical complexity of the substrates, the PLS models presented excellent external validation results, with root-mean-square error of prediction (RMSEP) values of 0.54, 1.02, 0.66, 1.93, 0.50, and 1.64 g L-1 for sucrose, glucose, fructose, ethanol, glycerol, and cells, respectively. The findings demonstrated that FT-MIR spectroscopy can be applied for real-time monitoring of the process, with potential to reduce costs and provide accurate information for more efficient control of the process. (AU)

• Processo FAPESP: 14/26854-9 - Estudo do processo de produção e recuperação de etanol: integração dos processos de fermentação extrativa com dióxido de carbono e recuperação em coluna de absorção
• Beneficiário: Kaio César da Silva Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/50046-4 - Estudo de processos integrados de produção e recuperação de etanol 1G (fapesp-eth bioenergia)
• Beneficiário: Alberto Colli Badino Junior
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE