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2025, Vol. 23, Special Issue 1

Selle kollektsiooni püsiv URIhttp://hdl.handle.net/10492/10056

Sirvi

Sirvi 2025, Vol. 23, Special Issue 1 Autor "Arrieta-González, C." järgi

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  • Pisipilt
    Kirje
    Analysis of the potential of livestock excreta for urea production through anaerobic digestion: challenges and opportunities in Latin America
    (Estonian University of Life Sciences, 2025) Villegas, S.; Rocha-Meneses, Lisandra; Luna-del Risco, M.; Arrieta-González, C.; González-Palacio, M.; Estonian University of Life Sciences. Institute of Forestry and Engineering
    Urea is one of the most demanded fertilizers worldwide and in Latin America. The high dependence on international markets to meet the region’s urea demand, the high consumption of fossil energy for its production, and greenhouse gas emissions increase agricultural production costs and create the need to seek alternative processes for urea production to reduce these adverse effects. In this sense, this work explores the possibility of producing urea in Latin America from the ammonia and CO₂ generated in the anaerobic digestion process of livestock excreta under conditions that favor the production of both gases. The results indicate that it is possible to meet the demand for urea for agricultural use by utilizing 15% of its theoretical potential obtained from livestock excreta. This new alternative for obtaining urea brings economic benefits, reduces greenhouse gas emissions, and fosters social development. However, it faces legal, infrastructure, and technological barriers that may hinder the adoption of this technology in rural areas of Latin America.
  • Pisipilt
    Kirje
    An overview of the technical and economic opportunities for biogas-based hydrogen production in Latin America
    (Estonian University of Life Sciences, 2025) Luna-del Risco, M.; Rocha-Meneses, Lisandra; Vanegas-Trujillo, E.; Arrieta-González, C.; Villegas Moncada, S.; Gonzalez-Palacio, M.; Patiño-Agudelo, A.; Sierra-del Rio, J.; Castillo-Meza, L.; Estonian University of Life Sciences. Institute of Forestry and Engineering. Chair of Biosystems Engineering
    The growing need for sustainable energy solutions has intensified interest in alternative sources to reduce reliance on fossil fuels. Latin America, with its abundant biomass resources from agricultural and industrial activities, offers significant potential for renewable energy generation. Biogas, derived from the anaerobic digestion of organic waste, presents a viable energy carrier and a promising feedstock for hydrogen production, a key component in global decarbonization efforts. Despite these opportunities, the adoption of biogas-based hydrogen production in Latin America remains limited due to high capital costs, technological challenges, inadequate infrastructure, and weak policy frameworks. This study provides a comprehensive analysis of the region’s potential by assessing biomass availability, technological pathways, and economic feasibility through data from research institutions and scientific literature. Technologies such as steam methane reforming and emerging biological processes are evaluated, alongside country-specific regulatory frameworks. Findings highlight those countries with strong agricultural sectors, such as Brazil, Argentina, and Colombia, hold high potential. However, economic challenges endure, with substantial investment required for technology deployment. Policy analysis reveals that progressive frameworks and financial incentives in select countries, like Chile and Uruguay, are fostering early adoption. Unlocking the potential of biogas-based hydrogen production in Latin America requires strategic investments, supportive policies, and enhanced regional collaboration. Strengthening these efforts can drive energy security, lower greenhouse gas emissions, and promote economic growth. Supporting regional initiatives with global sustainability objectives will position Latin America as a key player in the transition to renewable energy.