Journal ArticleDOI
Biogas production in low-cost household digesters at the Peruvian Andes
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TLDR
In this article, the authors investigated the effect of hydraulic residence time (HRT) on the performance of household digesters. Andean digesters originally developed in tropical regions have been adapted to the extreme weather conditions of the Andean Plateau (3000-4000m.a.s.l.).Abstract:
Low-cost tubular digesters originally developed in tropical regions have been adapted to the extreme weather conditions of the Andean Plateau (3000–4000 m.a.s.l.). The aim of this study was to characterise biogas production in household digesters located at high altitude, operating under psychrophilic conditions. To this end, two pilot digesters were monitored and field campaigns were carried out in two representative digesters of rural communities. Digesters’ useful volume ranged between 2.4 and 7.5 m 3 , and hydraulic residence time (HRT) between 60 and 90 days. The temperature inside the digester’s greenhouse ranged between 20 and 25 °C. Treating cow manure, a specific biogas production around 0.35 m 3 kg VS −1 was obtained, with some 65% CH 4 in biogas. In order to fulfil daily requirements for cooking and lighting, biogas production should be enhanced without increasing implementation costs as not to impede the expansion of this technology at household scale. In this sense, HRT below 60 days and OLR above 1 kg VS m −3 day −1 should be investigated to decrease digesters’ volume (i.e. costs) and increase biogas production rate. The adaptation of conventional gas burners to biogas characteristics can also contribute in improving the efficiency of the system.read more
Citations
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Journal ArticleDOI
The anaerobic digestion of solid organic waste
TL;DR: This manuscript provides a broad overview of the digestibility and energy production (biogas) yield of a range of substrates and the digester configurations that achieve these yields.
Journal ArticleDOI
Biogas as a sustainable energy source for developing countries: Opportunities and challenges
TL;DR: In this paper, the authors highlight the present status, challenges, and potential of biogas technology to advocate for further research, development and dissemination of the concept in developing countries, and highlight the need for concerted efforts from both governmental and non-governmental sectors to harness the inherent potential that is currently underutilized and unexploited.
Journal ArticleDOI
Overview of hydrogen production technologies from biogas and the applications in fuel cells
Helton José Alves,Cicero Bley Júnior,Rafael Rick Niklevicz,Elisandro Pires Frigo,Michelle Sato Frigo,Carlos H. Coimbra-Araújo +5 more
TL;DR: A literature review of the biogas reforming technologies, emphasizing the types of fuel cells available, the advantages offered by each route and the main problems faced, is presented in this paper.
Journal ArticleDOI
Household Biogas Digesters—A Review
TL;DR: A summary of different aspects of the design and operation of small-scale, household, biogas digesters can be found in this article, where different digester designs and materials used for construction, important operating parameters such as pH, temperature, substrate, and loading rate, applications of the biogAS, the government policies concerning the use of household digesters, and the social and environmental effects of the digesters.
Journal ArticleDOI
The challenges of anaerobic digestion and the role of biochar in optimizing anaerobic digestion
Michael O. Fagbohungbe,Ben M.J. Herbert,Lois Hurst,C. N. Ibeto,Hong Li,Shams Qamar Usmani,Kirk T. Semple +6 more
TL;DR: This review will examine substrate inhibition and their impact on anaerobic digestion, nutrient leaching and their environmental implications, the properties and functionality of biochar material in counteracting these challenges.
References
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Journal ArticleDOI
Anaerobic digestion of swine manure: Inhibition by ammonia
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TL;DR: In this paper, the authors presented an analysis of a number of selected options available for developing countries in the context of reducing total greenhouse gas emission per unit of useful energy for cooking, assuming that biomass as an energy carrier is CO2-neutral; however, other GHGs emitted from biomass combustion cause a net greenhouse effect; accordingly, in this study only the non-CO2 greenhouse gases are considered in estimating GHG emission for different biomass-based cooking options.
Biogas processes for sustainable development
TL;DR: This publication is intended for educational and research purposes only and should not be used as a guide to Elsevier’s courses or as a source for instruction in any other discipline.
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