On-field study of anaerobic digestion full-scale plants (Part I) : An on-field methodology to determine mass, carbon and nutrients balance
Articolo
Data di Pubblicazione:
2011
Citazione:
On-field study of anaerobic digestion full-scale plants (Part I) : An on-field
methodology to determine mass, carbon and nutrients balance / A. Schievano, G. D’Imporzano, S. Salati, F. Adani. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - 102:17(2011), pp. 7737-7744.
Abstract:
The mass balance (input/output mass flows) of full-scale anaerobic digestion (AD) processes should be known for a series of purposes, e.g. to understand carbon and nutrients balances, to evaluate the contribution of AD processes to elemental cycles, especially when digestates are applied to agricultural land and to measure the biodegradation yields and the process efficiency. In this paper, three alternative methods were studied, to determine the mass balance in full-scale processes, discussing their reliability and applicability. Through a 1-year survey on three full-scale AD plants and through 38 laboratory-scale batch digesters, the congruency of the considered methods was demonstrated and a linear equation was provided that allows calculating the wet weight losses (WL) from the methane produced (MP) by the plant (WL=41.949*MP+20.853, R 2=0.950, p<0.01). Additionally, this new tool was used to calculate carbon, nitrogen, phosphorous and potassium balances of the three observed AD plants.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Anaerobic digestion; Biogas; Digestate; Mass balance; Nutrients
Elenco autori:
A. Schievano, G. D’Imporzano, S. Salati, F. Adani
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