Biodigesters
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. MATHEMATICAL MODELS FOR ESTIMATING METHANE PRODUCTION IN COVERED LAGOON BIODIGESTERS TREATING PIG MANURE
ABSTRACT Covered lagoon biodigesters (CLB) have been widespread in Brazil in the treatment of pig manure. However, the quantification of biogas production in CLB using mathematical models is still limited and scarce. This study aimed to evaluate and compare six mathematical models—Chen-Hashimoto (Chen, 1983), CETESB (2006), COD Conversion (Chernicharo, 201
Eng. Agríc.. Publicado em: 2021-08
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2. USE OF INOCULUM IN BIODIGESTERS WITH CATTLE MANURE UNDER CONVENTIONAL AND ORGANIC PRODUCTION SYSTEMS
ABSTRACT One way of making livestock farming a more sustainable practice is to raise cattle organically. However, regardless of the production system, there is a generation of residues that can be converted into energy resources using biodigesters. This study aimed to evaluate the addition of inoculum in the anaerobic biodigestion of cattle manure under orga
Eng. Agríc.. Publicado em: 2020-04
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3. ECONOMIC MANAGEMENT MODEL OF ELECTRICITY GENERATED FROM BIOMASS IN A PIG FARM
ABSTRACT Faced with the increasing demand for renewable energy, researchers have developed several ways to generate them, such as biogas. Thus, the present study aims to demonstrate the economic viability of electricity generation from biodigesters in a pig farm to contribute to sustainable development by reducing pollution in the environment. Studies focuse
Eng. Agríc.. Publicado em: 2020-04
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4. Potential for biogas generation from sweet potato genotypes
Resumo O biogás é uma tecnologia que possibilita a geração de energia através do processo de biodigestão anaeróbia, sendo uma opção a produção a partir de batata-doce como fonte energética. A presente pesquisa teve por objetivo avaliar a produção de biogás em biodigestores anaeróbios de bancada, caracterizar os parâmetros físico-química da
Rev. Ambient. Água. Publicado em: 25/03/2019
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5. BIOGAS PRODUCTION FROM DAIRY CATTLE MANURE, UNDER ORGANIC AND CONVENTIONAL PRODUCTION SYSTEMS
ABSTRACT The purpose of this study was to evaluate the production of biogas, as well as the biogas production potential resulting from the anaerobic biodigestion of dairy cattle manure under organic (CMOS) and conventional (CMCS) production system. Also, the concentration of thermotolerant coliforms was evaluated after the biodigestion process. Therefore, be
Eng. Agríc.. Publicado em: 2017-12
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6. 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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7. ECONOMIC AND FINANCIAL VIABILITY OF DIGESTER USE IN CATTLE CONFINEMENT FOR BEEF
ABSTRACT This research analyzes the economic and financial feasibility of implementing a biodigester for confinement of beef cattle on a farm located in the State of São Paulo, through the approach of discounted cash flow. The anaerobic digestion technology arouses interest, due to its advantages with the generation of electricity and the pollution reductio
Eng. Agríc.. Publicado em: 2017-04
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8. 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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9. THE USE OF BIO-DIGESTERS IN SMALL AND MEDIUM RURAL PROPERTIES WITH EMPHASIS ON VALUE ADDING: A CASE STUDY FROM NORTHWESTERN REGION OF RIO GRANDE DO SUL STATE / O USO DE BIODIGESTORES EM PEQUENAS E MÉDIAS PROPRIEDADES RURAIS COM ÊNFASE NA AGREGAÇÃO DE VALOR: UM ESTUDO DE CASO DA REGIÃO NOROESTE DO RIO GRANDE DO SUL
From the duration of the Kyoto Protocol, there has been a renewed interest in technology of bio-digesters. As they allow a reduction in the emission of greenhouse gases compared to other waste treatment methods, their deployment can permit the marketing of carbon credits, resulting in money. The present study aims to analyze the process of dissemination of t
Publicado em: 2010
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10. Análise da viabilidade econômica de projetos que visam à instalação de biodigestores para o tratamento de resíduos da suinocultura sob as ópticas do Mecanismo de Desenvolvimento Limpo (MDL) e da geração de energia / Projects economic feasibility analyzes aimed at installing biodigesters to treat swine waste under the optics of the Clean Development Mechanism (CDM) and power generation
Desde a revolução industrial, ações não sustentáveis provenientes das atividades industriais, econômicas e de consumo têm provocado mudanças na biosfera devido ao aumento dos gases de efeito estufa (GEE) na atmosfera, o que faz com que a mudança climática seja um dos maiores desafios do século XXI. Frente a isso, foi adotado em dezembro de 1997 o
Publicado em: 2010
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11. An analysis of energetic balance of a biogasproducing System in a swine farm: implementation of a computational device / Análise de balanço energético de sistema de produção de biogás em granja de suínos: implementação de aplicativo computacional
The development of swine breeding made evident the need for greater attention to the issue of treatment and destination of swine wastes. Among the alternatives for environmental sanitation, the most advantageous one shows to be the biodigesters, since they add value to the process by means of the by-products generated: biogas, mainly made out of methane and
Publicado em: 2009
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12. Reasons for the non-use of the biodigestors in swine farms in Marechal Candido Rondon, PR / RazÃes pela nÃo utilizaÃÃo de biodigestores em granjas suinÃcolas em Marechal CÃndido Rondon â PR
The actual economic model takes the society to exploit the natural resources in an inadequate way, besides generating anthrop systems which are not always in concordance with nature. The swine culture is one of these systems, which needs some policies and actions in order to give the activity some sustainability. This research aimed at identifying the reason
Publicado em: 2009