Influence of volatile solids and pH for the production of volatile fatty acids: batch fermentation tests using sewage sludge
| Autor: | Fanny Claire Capri, Rosa Alduina, Giorgio Mannina, Alida Cosenza, Giuseppe Gallo, Dario Presti |
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| Přispěvatelé: | Presti D., Cosenza A., Capri F.C., Gallo G., Alduina R., Mannina G. |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Circular economy Batch fermentation 0207 environmental engineering Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Bioreactors Nutrient Volatile fatty acids Resource recovery from wastewater 020701 environmental engineering Waste Management and Disposal 0105 earth and related environmental sciences Suspended solids Settore ICAR/03 - Ingegneria Sanitaria-Ambientale Bacteria Sewage Renewable Energy Sustainability and the Environment Chemistry General Medicine Hydrogen-Ion Concentration Other Quantitative Biology (q-bio.OT) Fatty Acids Volatile Pulp and paper industry 6. Clean water Quantitative Biology - Other Quantitative Biology Activated sludge FOS: Biological sciences Fermentation Bacterial community Retention time Sludge |
| Zdroj: | Bioresource Technology |
| Popis: | The aim of this work was to study the effect of volatile suspended solid (VSS) and pH on volatile fatty acids (VFA) production from waste activated sludge (WAS) fermentation by means of batch tests. The final goal was to gain insights to enhance VFA stream quality, with the novelty of using WAS with high sludge retention time. Results revealed that the optimum conditions to maximize VFAs and minimize nutrients and non-VFA sCOD are a VSS concentration of 5.9 g/L and initial pH adjustment to pH 10. The WAS bacterial community structures were analysed according to Next Generation Sequencing (NGS) of 16S rDNA amplicons. The results revealed changes of bacterial phyla abundance in comparison with the batch test starting condition. 27 pages, 4 figures |
| Databáze: | OpenAIRE |
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