Effect of different types of volatile fatty acids on the performance and bacterial population in a batch reactor performing biological nutrient removal
Bioresource Technology, ISSN: 0960-8524, Vol: 388, Page: 129675
2023
- 2Citations
- 7Captures
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Article Description
Different ratios of four volatile fatty acids (VFAs) were used as the primary feed to a laboratory scale biological nutrient reactor during four operational stages. The reactor performed efficiently over 500 days of operation with over 90% dissolved phosphorus and over 98% ammonium-nitrogen (NH 4 + -N) removal. Through in the first experimental phase, acetate and propionate were present in a significant proportion as carbon sources, the relative abundance of Candidatus Accumulibacter, a potential polyphosphate accumulating organism, increased from 10% to 57% and the Defluviicoccus genus, a known glycogen accumulating organism (GAO), decreased from 41% to 5%. Further tests indicated the presence of denitrifying phosphorus accumulating organisms (DPAO) belonging to Clade IIC, that could use nitrite as the electron acceptor during P-uptake. In general, VFAs favored the increase of the genus Defluviicoccus and Candidatus Accumulibacter. High relative abundance of Defluviicoccus did not affect the stability and the performance of the BNR process.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0960852423011033; http://dx.doi.org/10.1016/j.biortech.2023.129675; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85170677457&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/37625655; https://linkinghub.elsevier.com/retrieve/pii/S0960852423011033; https://dx.doi.org/10.1016/j.biortech.2023.129675
Elsevier BV
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