Structure of Microbial Communities When Complementary Effluents Are Anaerobically Digested
| Autor: | André Neves, Isabel Paula Ramos Marques, Ana Eusébio |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
anaerobic digestion Anaerobic respiration Next Generation Sequencing Wastewater treatment 010501 environmental sciences lcsh:Technology 01 natural sciences lcsh:Chemistry biogas production Biogas Anaerobic digestion 010608 biotechnology General Materials Science lcsh:QH301-705.5 Instrumentation Effluent Organic waste 0105 earth and related environmental sciences Olive mill wastewater Fluid Flow and Transfer Processes biology lcsh:T Chemistry Process Chemistry and Technology Clostridiales General Engineering Bacteroidetes Piggery effluent Biogas production biology.organism_classification Pulp and paper industry lcsh:QC1-999 Computer Science Applications unbalance/inhibiting organic waste streams monitoring lcsh:Biology (General) lcsh:QD1-999 Wastewater Microbial population biology lcsh:TA1-2040 microbial community lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences Volume 11 Issue 3 Applied Sciences, Vol 11, Iss 1293, p 1293 (2021) Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11031293 |
| Popis: | Olive oil and pig productions are important industries in Portugal that generate large volumes of wastewater with high organic load and toxicity, raising environmental concerns. The principal objective of this study is to energetically valorize these organic effluents-piggery effluent and olive mill wastewater-through the anaerobic digestion to the biogas/methane production, by means of the effluent complementarity concept. Several mixtures of piggery effluent were tested, with an increasing percentage of olive mill wastewater. The best performance was obtained for samples of piggery effluent alone and in admixture with 30% of OMW, which provided the same volume of biogas (0.8 L, 70% CH4), 63/75% COD removal, and 434/489 L CH4/kg SVin, respectively. The validation of the process was assessed by molecular evaluation through Next Generation Sequencing (NGS) of the 16S rRNA gene. The structure of the microbial communities for both samples, throughout the anaerobic process, was characterized by the predominance of bacterial populations belonging to the phylum Firmicutes, mainly Clostridiales, with Bacteroidetes being the subdominant populations. Archaea populations belonging to the genus Methanosarcina became predominant throughout anaerobic digestion, confirming the formation of methane mainly from acetate, in line with the greatest removal of volatile fatty acids (VFAs) in these samples. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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