Data/hora: 14/06/2024 00:16:44

Provedor de dados: | 42
País: | Brazil
Título: | Temporal variation of bacterial population and response to physical and chemical parameters along a petrochemical industry wastewater treatment plant
Autores: | ANTUNES,THEMIS C.; BALLARINI,ANA E.; SAND,SUELI VAN DER.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Bacteria; Diversity; Wastewater treatment; Facultative lagoon; Activated sludge.
Resumo: | Abstract: The petrochemical industry has played a considerable role in generation and release of waste in the environment. Activated sludge and facultative lagoons are commonly used for domestic and industrial wastewater treatment due to their low-cost and minimal need for operational requirements. Microorganisms present in wastewater treatment plant (WWTP) are responsible for most nutrient removal. In this study, microbiological and physicochemical parameters were used to estimate changes in bacterial community in a petrochemical industrial WWTP. The activated sludge was the place with higher heterotrophic bacterial quantification. Denitrifying bacteria was reduced at least 5.3 times throughout all collections samples. We observe a decrease in the total Kjeldahl nitrogen, oxygen demand and phosphate throughout the WWTP. In this work, we also use Matrix-Assisted Laser Desorption Ionisation-Time-of-Flight Mass Spectrometry (MALDI-TOF MS) for bacteria isolates identification comparing with 16S rDNA sequencing. The MALDI-TOF MS allowed the identification of 93% of the isolates and only 5% show different results from 16S rDNA sequencing showing that the MALDI-TOF MS can be a tool for identifying environmental bacteria. The observation of microbial community dynamics in the WWTP is important in order to understand the functioning of the ecological structure formed in a specific environment.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300616
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201920180394
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.91 n.2 2019
Fonte: | info:eu-repo/semantics/openAccess