Data/hora: 05/06/2024 16:21:00

Provedor de dados: | 52
País: | Brazil
Título: | Evaluation of the microbial diversity in sequencing batch reactor treating linear alkylbenzene sulfonate under denitrifying and mesophilic conditions using swine sludge as inoculum
Autores: | Duarte,Iolanda Cristina Silveira; Oliveira,Lorena Lima de; Okada,Dagoberto Yukio; Prado,Pierre Ferreira do; Varesche,Maria Bernadete Amâncio.
Data: | 2015-06-01
Ano: | 2015
Palavras-chave: | Linear alkylbenzene sulfonate (LAS); Bioreactor; PCR/DGGE; Denitrified.
Resumo: | The objective of this study was to evaluate the degradation of Linear Alkylbenzene Sulfonate (LAS) in anaerobic sequencing batch reactor (ASBR) under denitrifying conditions using swine sludge as inoculum. The reactor was operated for 104 days with synthetic substrate containing nitrate, and LAS was added later (22 mg/L). Considering the added mass of the LAS, the adsorbed mass in the sludge and discarded along with the effluent, degradation of the surfactant at the end of operation was 87%, removal of chemical oxygen demand was 86% and nitrate was 98%. The bacterial community was evaluated by cutting the bands and sequencing of polymerase chain reaction (PCR) fragments and denaturing gradient gel electrophoresis (DGGE). The sequences obtained were related to the phylum Proteobacteria and the alpha-and beta-proteobacteria classes, these bacteria were probably involved in the degradation of LAS. The efficiently degraded LAS in the reactor was operated in batch sequences in denitrifying conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000300326
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-8913201500271
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.58 n.3 2015
Fonte: | info:eu-repo/semantics/openAccess