Performance and microbial community analysis in an anaerobic hybrid baffled reactor treating dairy wastewater
| Autor: | Karina Rojas, Gunther Brucha, Giovana Tommaso, Alessandra Giordani, Elize Hayashi, M. Madalena Alves, Kyem A. Santos |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Firmicutes 010501 environmental sciences 01 natural sciences Methanosaeta 03 medical and health sciences Anaerobic digestion Microbial community Environmental Chemistry Food science 030304 developmental biology 0105 earth and related environmental sciences Water Science and Technology 0303 health sciences HABR Science & Technology biology Chemistry Ecological Modeling Dairy wastewater biology.organism_classification Pollution Methanogen Engenharia e Tecnologia::Biotecnologia Ambiental 6. Clean water Waste treatment Microbial population biology 13. Climate action Sewage treatment Biotecnologia Ambiental [Engenharia e Tecnologia] Proteobacteria RESÍDUOS AGRÍCOLAS |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| Popis: | Anaerobic dairy waste treatment requires effective control to avoid long-chain fatty acid (LCFA) inhibitory effects on anaerobic microorganisms, especially methanogens. The hybrid anaerobic baffled reactor (HABR) can provide system stability, but more needs to be done to understand how the microbial communities underpinning the HABR compartments behave and respond. Thus, this study aimed to examine the HABR's microbial community correlating its performance when subjected to an increase in organic loading rate (OLR) during simulated dairy wastewater treatment. Besides the elevation in OLR, the system could maintain a high COD removal efficiency, nearly to 91\%, and elevate the methane production to 53\%. Almost all of the organic matter removal occurred mainly in C1 and C2 compartments. The genera Methanosaeta, an acetoclastic methanogen, and Methanobacterium, a hydrogenotrophic methanogen, were the HABR's dominant species. The most representative phylum found was Bacteroidetes (12--28\%), Firmicutes (3--20\%), Chloroflexi (4--26\%), and Proteobacteria (4--14\\%). Species capable of syntrophic partnership with methanogens were also identified, belonging to the family of Syntrophomonadaceae and Syntrophaceae. Microorganisms able to perform the AD process as HA73, VadinCA02, T78, Longilinea, Clostridium, and Syntrophomonas were present in the HABR. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – CAPES Finance Code 001 and process no. 23038.009805/2012–39 info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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