| Texto completo | |
| Autor(es): |
Assumpcao, Daniel de Castro
[1]
;
Ccopa Rivera, Elmer Alberto
[1, 2]
;
Tovar, Laura Plazas
[3]
;
Ezeji, Thaddeus Chukwuemeka
[2]
;
Maciel Filho, Rubens
[1]
;
Mariano, Adriano Pinto
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Control LOPCA, UNICAMP, Campinas, SP - Brazil
[2] Ohio State Univ, Dept Anim Sci, Ohio State Agr Res & Dev Ctr, Wooster, OH - USA
[3] Fed Univ Santa Maria UFSM, Dept Chem Engn, Santa Maria, RS - Brazil
Número total de Afiliações: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Bioprocess and Biosystems Engineering; v. 41, n. 11, p. 1651-1663, NOV 2018. |
| Citações Web of Science: | 2 |
| Resumo | |
In flexible ethanol-butanol plants, low tolerance to butanol by solventogenic clostridia (and resulting dilute fermentation) results in considerable number of empty fermentors whenever production focuses on ethanol. This research identified scenarios in which vacuum fermentation (in-situ vacuum recovery) may be applied to solve this problem. We conducted ethanol (Saccharomyces cerevisiae) and ABE (Clostridium beijerinckii NCIMB 8052) batch vacuum fermentations of eucalyptus hydrolysates according to the distribution of sugars in a flexible plant. Based on the experiments and performance targets set for the ABE fermentation, we simulated a flexible plant that processes 1000 dry t eucalyptus/day using pretreatment and enzymatic hydrolysis steps with moderate solids loading (15% w/w). The simulation showed that the number of fermentation tanks can decrease by 62% (eliminating 10 idle tanks, 3748m(3) each) by applying vacuum recovery only to the fermentation of mixed (cellulose+hemicellulose) hydrolysates to ABE. We concluded that this configuration can result in savings of up to 2 MMUS\$/year in comparison with flexible plants having only conventional batch fermentors, and additional cost savings are expected from reduced wastewater footprint. (AU) | |
| Processo FAPESP: | 15/50243-2 - Energy-efficient production of butanol (an advanced biofuel) from eucalyptus wood |
| Beneficiário: | Adriano Pinto Mariano |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/01785-0 - Produção de butanol a partir de madeira de eucalipto: efeito do glicerol na desintoxicação in situ de inibidores microbianos derivados de material lignocelulósico e análise in silico do metabolismo do Clostridium beijerinckii NCIMB 8052 |
| Beneficiário: | Elmer Alberto Ccopa Rivera |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |
| Processo FAPESP: | 15/07097-5 - Desenvolvimento de um bioprocesso com alta eficiência energética para a produção flexível de butanol/etanol integrado a uma usina kraft de celulose |
| Beneficiário: | Adriano Pinto Mariano |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOEN - Regular |