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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Improvements in Biobutanol Fermentation and Their Impacts on Distillation Energy Consumption and Wastewater Generation

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Autor(es):
Mariano, Adriano Pinto [1] ; Maciel Filho, Rubens [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Campinas UNICAMP, Lab Optimizat Design & Adv Control LOPCA, Sch Chem Engn, BR-13083852 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: BioEnergy Research; v. 5, n. 2, p. 504-514, JUN 2012.
Citações Web of Science: 41
Resumo

In the conventional fermentation process to obtain butanol (a novel biofuel), product-induced toxicity results in a product stream with low concentration of butanol (similar to 13 g/L) and limits the concentration of the sugar solution to less than 60 g/L. As a result, steam-consuming operations such as mash sterilization, downstream product recovery (distillation), and wastewater treatment are energy-intensive and important economic drawbacks. Based on the correlation between energy consumption of the distillation unit and butanol concentration in the fermentation beer, the present research points out that improvements in biobutanol processing intended to increase the concentration of butanol in the beer should have a minimum target of 36 g/L. Moreover, due to the dramatic effect of butanol concentration on the wastewater footprint, the volume of the effluent stream can be reduced by 60% (from 72 to 29 L stillage/L butanol) if the minimum concentration target is reached instead of the usual butanol titer of 13 g/L. These correlations were used as the basis to discuss the impacts of today's research works (genetic strain improvement, utilization of lignocellulosic biomass feedstock, and development of new process technologies) on the energy consumption for complete dehydration of butanol and on wastewater generation. (AU)

Processo FAPESP: 07/00341-1 - Modelagem, simulação e controle de um processo fermentativo contínuo extrativo de produção de butanol
Beneficiário:Adriano Pinto Mariano
Linha de fomento: Bolsas no Brasil - Pós-Doutorado