| Full text | |
| Author(s): |
Fuess, Lucas Tadeu
[1]
;
Nunes Ferraz, Jr., Antonio Djalma
[2]
;
Machado, Carla Botelho
[2]
;
Zaiat, Marcelo
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, EESC, LPB, Av Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil
[2] CNPEM, Lab Nacl Ciencia & Tecnol Bioetanol CTBE, Polo Alta Tecnol 2, Rua Giuseppe Maximo Scolfaro 10000, POB 6170, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | Bioresource Technology; v. 247, p. 426-433, JAN 2018. |
| Web of Science Citations: | 14 |
| Abstract | |
This study aimed to better understand the role of different microbial groups and the determining fermentation pathways in a biohydrogen (bioH(2))-producing reactor fed with sugarcane vinasse by using next-generation sequencing and principal component analysis (PCA). Both microbial structure and dynamics were characterized. The highest bioH(2) production levels were associated with the Thermoanaerobacterium genus, whilst lactate-producing bacteria comprised the dominant genera (e.g. Lactobacillus and Leuconostoc) within the reactor at both stable and unstable bioH(2)-producing periods. PCA further revealed that the fermentation of lactate played a dual role in the reactor, as both bioH(2)-producing (acetate + lactate -> butyrate + bioH(2)) and non-bioH(2)-producing (lactate. propionate + acetate) routes could be observed. Overall, the results suggested that lactate is the primary alternative carbon source in vinasse-fed systems subjected to carbohydrate-shortage conditions. (AU) | |
| FAPESP's process: | 12/15606-9 - Thermophilic anaerobic biodigestion of vinasse in combined acidogenic-methanogenic systems to enhance bioenergy recovery in first generation sugarcane biorefineries |
| Grantee: | Lucas Tadeu Fuess |
| Support type: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 15/21650-9 - Applied metagenomics for biofuels development and environmental sustainability in biorefineries based on sugarcane |
| Grantee: | Antônio Djalma Nunes Ferraz Júnior |
| Support type: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 09/15984-0 - Bioenergy production from wastewaters and environmental fitting of liquid and solid wastes generated |
| Grantee: | Marcelo Zaiat |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/15665-8 - Structure and functional dynamics of microbial community of anaerobic digesters applied to energy recovery and environmental framework of wastes generated in bioethanol production of 1st and 2nd generation |
| Grantee: | Antônio Djalma Nunes Ferraz Júnior |
| Support type: | Scholarships in Brazil - Post-Doctorate |