Removal mechanisms of different substrates during the pre-denitrification step of an anoxic/aerobic sequencing process are studied. Biomass was cultivated in an anoxic/aerobic SBR and fed with a mixture of low and high molecular weight compounds. Substrate removal mechanisms are studied by means of batch tests, performed under anoxic conditions. The dynamic response to a spike of four different substrates (acetate, glucose, glutamic acid and ethanol) is described by simultaneously considering substrate and electron acceptor removal, and PHB and carbohydrates storage. PHB storage is a relevant mechanism during the removal of acetate and ethanol, while glucose is removed mainly by carbohydrate storage.
Role of storage phenomena on removal of different substrates during pre-denitrification / Beccari, Mario; Dionisi, Davide; C., Levantesi; Majone, Mauro; V., Renzi. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - STAMPA. - 43:3(2001), pp. 151-158. (Intervento presentato al convegno 2nd IWA International Conference on Sequencing Batch Reactor Technology tenutosi a NARBONNE, FRANCE nel JUL 10-12, 2000).
Role of storage phenomena on removal of different substrates during pre-denitrification
BECCARI, Mario;DIONISI, Davide;MAJONE, Mauro;
2001
Abstract
Removal mechanisms of different substrates during the pre-denitrification step of an anoxic/aerobic sequencing process are studied. Biomass was cultivated in an anoxic/aerobic SBR and fed with a mixture of low and high molecular weight compounds. Substrate removal mechanisms are studied by means of batch tests, performed under anoxic conditions. The dynamic response to a spike of four different substrates (acetate, glucose, glutamic acid and ethanol) is described by simultaneously considering substrate and electron acceptor removal, and PHB and carbohydrates storage. PHB storage is a relevant mechanism during the removal of acetate and ethanol, while glucose is removed mainly by carbohydrate storage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
