Biogas production is increasing as a sustainable energy supply, with digestate resulting as a by-product of biogas plants. As a result, the high concentration of Clostridium spp. in digestate became a concern in dairy farming areas. Clostridium spores can contaminate soils and crops when digestate is used as fertilizer, causing a con fl ictual cohabitation of biogas with traditional cheese productions. In order to solve the problem, this study aimed to search for a technical solution enabling either a drastic reduction or the elimination of the content of Clostridium spp. within digestate. Results showed a complete elimination of Clostridium spp. in pelleted stored solid digestate; in addition, pelleting caused a reduction of pH and water mass fraction in terms of fresh weight, and a concentration of mineral nutrients compared to stored solid digestate. Pellet can represent a possible sustainable solution both in reducing potential risks linked to the presence of Clostridium spp. in digestate and in improving the transportation and distri- bution of high-value fertilizer. Hence, pelleting of solid digestate could offer a simple and ef ficient method to allow cohesistence of biogas plants and dairy farming

Pelleting is a successful method to eliminate the presence of Clostridium spp. from the digestate of biogas plants / Pulvirenti, Andrea; Ronga, Domenico; Mannella, Lorenzo; Pecchioni, Nicola; Zaghi, Massimo; Tomasselli, Anna Rita; Mannella, Lorenzo; Pecchioni, Nicola. - In: BIOMASS & BIOENERGY. - ISSN 0961-9534. - STAMPA. - 81:(2015), pp. 479-482. [10.1016/j.biombioe.2015.08.008]

Pelleting is a successful method to eliminate the presence of Clostridium spp. from the digestate of biogas plants

PULVIRENTI, Andrea;RONGA, Domenico;MANNELLA, LORENZO;PECCHIONI, Nicola;Mannella, Lorenzo;Pecchioni, Nicola
2015

Abstract

Biogas production is increasing as a sustainable energy supply, with digestate resulting as a by-product of biogas plants. As a result, the high concentration of Clostridium spp. in digestate became a concern in dairy farming areas. Clostridium spores can contaminate soils and crops when digestate is used as fertilizer, causing a con fl ictual cohabitation of biogas with traditional cheese productions. In order to solve the problem, this study aimed to search for a technical solution enabling either a drastic reduction or the elimination of the content of Clostridium spp. within digestate. Results showed a complete elimination of Clostridium spp. in pelleted stored solid digestate; in addition, pelleting caused a reduction of pH and water mass fraction in terms of fresh weight, and a concentration of mineral nutrients compared to stored solid digestate. Pellet can represent a possible sustainable solution both in reducing potential risks linked to the presence of Clostridium spp. in digestate and in improving the transportation and distri- bution of high-value fertilizer. Hence, pelleting of solid digestate could offer a simple and ef ficient method to allow cohesistence of biogas plants and dairy farming
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Pelleting is a successful method to eliminate the presence of Clostridium spp. from the digestate of biogas plants / Pulvirenti, Andrea; Ronga, Domenico; Mannella, Lorenzo; Pecchioni, Nicola; Zaghi, Massimo; Tomasselli, Anna Rita; Mannella, Lorenzo; Pecchioni, Nicola. - In: BIOMASS & BIOENERGY. - ISSN 0961-9534. - STAMPA. - 81:(2015), pp. 479-482. [10.1016/j.biombioe.2015.08.008]
Pulvirenti, Andrea; Ronga, Domenico; Mannella, Lorenzo; Pecchioni, Nicola; Zaghi, Massimo; Tomasselli, Anna Rita; Mannella, Lorenzo; Pecchioni, Nicola
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1070895
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