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Keywords = residual brewery sludge brewery

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24 pages, 951 KB  
Review
Proposal for a Conceptual Biorefinery for the Conversion of Waste into Biocrude, H2 and Electricity Based on Hydrothermal Co-Liquefaction and Bioelectrochemical Systems
by Sara Cangussú Bassoli, Matheus Henrique Alcântara de Lima Cardozo, Fabiano Luiz Naves, Gisella Lamas-Samanamud and Mateus de Souza Amaral
Fermentation 2025, 11(4), 162; https://doi.org/10.3390/fermentation11040162 - 22 Mar 2025
Cited by 1 | Viewed by 1145
Abstract
Microalgal biomass contributes to the valorization of urban and agro-industrial solid waste via hydrothermal co-liquefaction (co-HTL) for the production of biocrude, a sustainable substitute for petroleum. Tropical and populous countries like Brazil generate a lot of agro-industrial waste, such as sugarcane bagasse and [...] Read more.
Microalgal biomass contributes to the valorization of urban and agro-industrial solid waste via hydrothermal co-liquefaction (co-HTL) for the production of biocrude, a sustainable substitute for petroleum. Tropical and populous countries like Brazil generate a lot of agro-industrial waste, such as sugarcane bagasse and malt bagasse, as well as sludge from sewage treatment plants. Such residues are potential sources of biocrude production via thermochemical conversion. To increase biocrude productivity, microalgal biomass has been successfully used in mixing the co-HTL process feed with different residues. In addition to biocrude, co-HTL generates an aqueous phase that can be used to produce H2 and/or electricity via microbial energy cells. In this sense, this paper aims to present the potential for generating energy from solid waste commonly generated in emerging countries such as Brazil based on a simplified scheme of a conceptual biorefinery employing algal biomass co-HTL together with sugarcane bagasse, malt bagasse, and sludge. The biorefinery model could be integrated into an ethanol production plant, a brewery, or a sewage treatment plant, aiming at the production of biocrude and H2 and/or electricity by bioelectrochemical systems, such as microbial electrolysis cells and microbial fuel cells. Full article
(This article belongs to the Special Issue Algae Biotechnology for Biofuel Production and Bioremediation)
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14 pages, 2625 KB  
Article
Population Dynamics of Methanogenic Archea in Co-Digestion Systems Operating Different Industrial Residues for Biogas Production
by 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
Sustainability 2022, 14(18), 11536; https://doi.org/10.3390/su141811536 - 14 Sep 2022
Cited by 4 | Viewed by 2980
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 [...] Read more.
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. Full article
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