Population Dynamics of Methanogenic Archea in Co-Digestion Systems Operating Different Industrial Residues for Biogas Production

Isabela Gomes Barreto da Motta, Larice Aparecida Rezende Santana, Hyago Passe Pereira, Vanessa Romário de Paula, Marta Fonseca Martins, Jailton da Costa Carneiro and Marcelo Henrique Otenio ()
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Isabela Gomes Barreto da Motta: Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora Campus, Juiz de Fora 36036-900, Brazil
Larice Aparecida Rezende Santana: Postgraduate Program in Science and Technology of Milk and Dairy Products, Health Sciences Center, Federal University of Juiz de Fora, Juiz de Fora Campus, Juiz de Fora 36036-900, Brazil
Hyago Passe Pereira: Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora Campus, Juiz de Fora 36036-900, Brazil
Vanessa Romário de Paula: Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation, Juiz de Fora 36038-330, Brazil
Marta Fonseca Martins: Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation, Juiz de Fora 36038-330, Brazil
Jailton da Costa Carneiro: Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation, Juiz de Fora 36038-330, Brazil
Marcelo Henrique Otenio: Embrapa Dairy Cattle, Brazilian Agricultural Research Corporation, Juiz de Fora 36038-330, Brazil

Sustainability, 2022, vol. 14, issue 18, 1-14

Abstract: This study aimed to analyze the population dynamics of methanogenic archaea in co-digestion systems operated under different concentrations of industrial waste such as ricotta whey and brewery waste sludge in association with bovine manure. It was believed that the association of these residues from the food industry combined with bovine manure can contribute to improve the production of biogas. To identify the archaea, DNA extractions and the sequencing of the 16s rRNA gene were performed from 38 samples of influents and effluents. The results indicated that Methanosaeta and Methanosarcina were predominant in the co-digestion of ricotta cheese whey and that Methanosaeta , Methanocorpusculum , and Methanobrevibacter prevailed in the co-digestion of residual brewery sludge. The three ricotta cheese whey biodigesters demonstrated efficiency in methane production; in contrast, residual sludge of brewery biodigesters only showed efficiency in the system operated with 20% co-substrate.

Keywords: biogas; methane; microbial ecology; ricotta cheese whey; residual brewery sludge brewery (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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