Methane Digesters
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. BIOGAS PRODUCTION IN DAIRY CATTLE SYSTEMS, USING BATCH DIGESTERS WITH AND WITHOUT SOLIDS SEPARATION IN THE SUBSTRATES
ABSTRACT This research aimed to evaluate the biogas production during the anaerobic biodigestion process of dairy cattle manure, with and without solids separation. Sixteen biodigesters of the batch type were used, each one with 2L of capacity, supplied with manure in four different conditions: (1) pure manure, after washing the floors of the free stall syst
Eng. Agríc.. Publicado em: 2017-06
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2. Crude glycerin in anaerobic co-digestion of dairy cattle manure increases methane production
ABSTRACT Anaerobic digestion of crude glycerin (CG) along with animal waste has been an excellent option for increasing the production of biogas and methane to achieve efficiency in the treatment of both residues. This study aimed to evaluate improvements in specific productions of biogas and methane, reductions in solid and fibrous components in substrates
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-06
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3. Evaluation of nickel and copper catalysts in biogas reforming for hydrogen production in SOFC
ABSTRACT The solid oxide fuel cells (SOFC) enable the efficient generation of clean energy, fitting the current requirements of the growing demand for electricity and for the environment preservation. When powered with biogas (from digesters of municipal wastes), the SOFCs also contribute to reduce the environmental impact of these wastes. The most suitable
Matéria (Rio J.). Publicado em: 22/05/2017
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4. POTENTIAL OF REDUCTION IN THE EMISSION OF METHANE AND NITROUS OXIDE FROM SWINE WASTEWATER AFTER TREATED BY TWO DIFFERENT SYSTEMS
ABSTRACT Swine wastewater have high pollution load, requiring treatment before its disposal into the environment. Methane (CH4) potentially emitted for such waste is considered 21 times more polluting than Carbon dioxide (CO2), and the nitrous oxide (N2O) is considered 310 times. In this way, projects of the Clean Development Mechanism (CDM) and energy use r
Eng. Agríc.. Publicado em: 2016-12
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5. Biogas production: litter from broilers receiving direct-fed microbials and an enzyme blend
ABSTRACT The effect of additives used in the feed of broilers on anaerobic bio-digestion of poultry litter was evaluated. Four diets were used: NC: negative control; DFM: NC + 500 ppm direct-fed microbials (DFM) containing Bacillus subtilis and Bacillus licheniformis; ENZ: diet formulated with an enzyme blend (20 ppm phytase, 200 ppm protease and 200 ppm xyl
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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6. Potential of biogas and methane production from anaerobic digestion of poultry slaughterhouse effluent
The objective of this study was to evaluate the efficiency of anaerobic digestion on the treatment of effluent from poultry slaughterhouse. The experiment was conducted at the Laboratory of Waste Recycling from Animal Production/FCA/UFGD. During four weeks, eight experimental digesters, semi-continuous models, were loaded and set according to the hydraulic r
R. Bras. Zootec.. Publicado em: 2012-11
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7. Anaerobic bio-digestion of concentrate obtained in the process of ultra filtration of effluents from tilapia processing unit
The objective of the present study was to evaluate the efficiency of the process of biodigestion of the protein concentrate resulting from the ultrafiltration of the effluent from a slaughterhouse freezer of Nile tilapia. Bench digesters were used with excrements and water (control) in comparison with a mixture of cattle manure and effluent from the stages o
Revista Brasileira de Zootecnia. Publicado em: 2012-02
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8. Biogas: independencia energetica do Pantanal Mato-Grossense.
A crise de energia, provocada pelos sucessivos aumentos nos precos do petroleo, fez com que o Governo Brasileiro desse maior atencao a producao de biogas, que nas areas rurais podera rapidamente permitir a auto-suficiencia energetica, devido a existencia de grande quantidade de residuos organicos, para a utilizacao em biodigestores. A regiao do Pantanal Mato
Corumba: EMBRAPA-UEPAE Corumba. Publicado em: 2011
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9. Influência da recirculação de percolado em sistemas de batelada de uma fase e híbrido na digestão da fração orgânica de resíduos sólidos urbanos / Influency of leachate recirculation in batch and one-phase reactors to anaerobic digestion of organic fraction of urban solid waste
This thesis studied the influence of the leachate recirculation, adjusting to the best rates and frequencies, for degradation of the organic fraction of the urban solid wastes, in one and two-phases (hybrid) system. Bioreactors of 3.45 L were used and filled out with OFMSW pattern, leachate as seed and an anaerobic filter as methanogenic reactor. The perform
Publicado em: 2004
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10. Biodigestão anaeróbia dos resíduos sólidos urbanos: um panorama tecnológico atual / Anaerobic Digestion of Urban Solid Residues: A Current Technological Panorama
This paper presents a comprehensive and updated view of technologies used in anaerobic digestion (AD) for solid waste treatment. A review of literature and a theoretical analysis of relevant information are carried out for this purpose. The evolution of discussions about environmental issues, the work developed by The United Nations, the Earths climatic syst
Publicado em: 2004
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11. Examination of Thermophilic Methane-Producing Digesters by Analysis of Bacterial Lipids †
Thermophilic methane-producing digesters were examined by the analysis of lipids to determine the microbial biomass, community structure, and nutritional status of the microbes within the digesters. The digesters received a daily feedstock of cattle feed and Bermuda grass, with some digesters receiving additional supplements of propionate, butyrate, or nitra
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12. Quantitative Influences of Butyrate or Propionate on Thermophilic Production of Methane from Biomass †
Sodium butyrate and sodium propionate were continuously infused into separate 4-liter thermophilic digesters. These digesters were operated at 55°C, had a retention time of 20 days, and had a pH of 7.8. Infusion rates were started at 10 mM day−1 and were increased incrementally when new stable external organic acid pool sizes and new stable gas production