Data/hora: 13/06/2024 09:09:16

Biblioteca(s): | Embrapa Agricultura Digital.
Data corrente: | 13/12/2018
Data da última atualização: | 07/01/2020
Autoria: | SUÁREZ, W. A. B.; VANTINI, J. da S.; DUDA, R. M.; GIACHETTO, P. F.; CINTRA, L. C.; FERRO, M. I. T.; OLIVEIRA, R. A. de.
Afiliação: | WILMAR ALIRIO BOTELLO SUÁREZ, Unesp; JULIANA DA SILVA VANTINI, Unesp; ROSE MARIA DUDA, Fatec Jaboticabal; POLIANA FERNANDA GIACHETTO, CNPTIA; LEANDRO CARRIJO CINTRA, CNPTIA; MARIA INÊS TIRABOSCHI FERRO, Unesp; ROBERTO ALVES DE OLIVEIRA, Unesp.
Título: | Predominance of syntrophic bacteria, Methanosaeta and Methanoculleus in a two-stage up-flow anaerobic sludge blanket reactor treating coffee processing wastewater at high organic loading rate.
Ano de publicação: | 2018
Fonte/Imprenta: | Bioresource Technology, v. 268, p. 158-168, Nov. 2018.
DOI: | https://doi.org/10.1016/j.biortech.2018.06.091
Idioma: | Inglês
Conteúdo: | Abstract. The effect of the organic loading rate (OLR) on the performance and microbial composition of a two-stage UASB system treating coffee processing wastewater was assessed. The system was operated with OLR up to 18.2 g COD (L d)-1 and effluent recirculation. Methane production and effluent characteristics were monitored. The microbial composition was examined through next-generation sequencing and qPCR from the anaerobic sludge of the first reactor (R1) operated at low and high OLR. The system showed operational stability, obtaining a maximum methane production of 2.2 L CH4 (L d)-1, with a removal efficiency of COD and phenolic compounds of 84 and 73%, respectively. The performance of R1 at high OLR in steady conditions was associated with an appropriate proportion of nutrients (particularly Fe) and a marked increase of the syntrophic bacteria Syntrophus and Candidatus Cloacimonas, and acetoclastic and hydrogenotrophic methanogens, mainly Methanosaeta, Methanoculleus, Methanobacterium and Methanomassiliicoccus.
Palavras-Chave: | Digestão anaeróbica; Metagenomics of anaerobic sludge; Methanogenic archaea; Pollutant removal; Remoção de poluente; Sistema UASB.
Thesagro: | Biogás.
Categoria do assunto: | --
Registro original: | Embrapa Agricultura Digital (CNPTIA)
Exemplares: | CNPTIA - (19881-1) - UPC - AP - DD -  -  -  - DIS