| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Population Changes of Eubacteria, Sulfate-Reducing Bacteria and Methanogenic Archaea in an Anaerobic Reactor Processing Ethanol Distillery Vinasse
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| Autores: |
Brown,Adis Ivonne Terry
Pozzi,Eloisa
Damianovic,Marcia Helena Rissato Zamariolli
Briones,Homero Enrique Urrutia
Ortiz,Leslie Ester Abarzúa
Pires,Eduardo Cleto
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| Data: |
2019-01-01
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| Ano: |
2019
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| Palavras-chave: |
UASB reactor
Microbial characterization
Methanogenesis
Sulfidogenesis
DGGE
Quantitative PCR
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| Resumo: |
Abstract The microbiological characterization by molecular techniques (DGGE and quantitative PCR) of Archaea, Bacteria domain and sulfate-reducing bacteria (SRB) from a laboratory scale Up-flow Anaerobic Sludge Blanket (UASB) processing sugar cane vinasse was performed during the operational phase with increasing organic loads. The organic load removal efficiency was between 97% and 75% for volumetric organic loads (VOL) in the range of 0.6 to 15.4 kgCOD.m-3.d−1 and for higher VOL (until 27.0 kgCOD.m-3 .d−1) the removal efficiency decreased to 48%. Archaea represented the majority of the estimated population (107 copies of 16S RNA ribosomal gene. mL-1) followed by bacteria (106 copies of 16S RNA ribosomal gene. mL-1) and sulfate-reducing bacteria (SRB) (105 copies of dsrB gene. mL-1). There was a significant difference between the populations of Archaea and SRB with increasing VOL. DGGE profiles show differences among populations with increasing VOL, especially with respect to sulfate-reducing bacteria. The presence of SRB together with a high sulfate removal percentage (97%) of about 15 kgCOD.m-3d-1h, indicates the establishment of a sulfidogenic process.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100203
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/1678-4324-2019180268
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.62 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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