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.

Presti D., Cosenza A., Capri F.C., Gallo G., Alduina R., & Mannina G. (2021). Influence of volatile solids and pH for the production of volatile fatty acids: Batch fermentation tests using sewage sludge. BIORESOURCE TECHNOLOGY, 342, 1-7 [10.1016/j.biortech.2021.125853].

Influence of volatile solids and pH for the production of volatile fatty acids: Batch fermentation tests using sewage sludge

Presti D.
Co-primo
Writing – Review & Editing
;
Cosenza A.
Co-primo
Writing – Review & Editing
;
Capri F. C.
Co-primo
Writing – Review & Editing
;
Gallo G.
Co-primo
Writing – Review & Editing
;
Alduina R.
Co-primo
Writing – Review & Editing
;
Mannina G.
Co-primo
Writing – Review & Editing
2021-12

Abstract

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.
Settore ICAR/03 - Ingegneria Sanitaria-Ambientale
https://www.sciencedirect.com/science/article/pii/S0960852421011949?via=ihub
Presti D., Cosenza A., Capri F.C., Gallo G., Alduina R., & Mannina G. (2021). Influence of volatile solids and pH for the production of volatile fatty acids: Batch fermentation tests using sewage sludge. BIORESOURCE TECHNOLOGY, 342, 1-7 [10.1016/j.biortech.2021.125853].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/531247
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