Avaliação do potencial de produção de biogás e da eficiência de tratamento do reator anaeróbio de manta de lodo (UASB) alimentado com dejetos de suínos

Campos, Cláudio Milton Montenegro; Mochizuki, Emerson Teruaki; Damasceno, Leonardo Henrique Soares; Botelho, Cláudio Gouvêa

doi:10.1590/s1413-70542005000400018

Cited by 16 publications

(13 citation statements)

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“…However, the viability of the activity is threatened when it comes to the environment and it is considered by the environmental control agencies of high pollution potential (CAMPOS, 2005).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum

et al. 2012

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ABSTRACT:The objective of this study was to evaluate the quality and the production of biogas and biofertilizer obtained from biodigester supplied with pig feces in the initial, growing and finishing stages, fed with diets formulated based on corn or sorghum. Twenty bench biodigesters were used with hydraulic retention time of 30 days and daily loads that contained 4 to 6% of total solids (TS) and 3.6 to 5.2% of volatile solids (VS). In the effluent of the biodigesters, mean levels of TS were observed ranging between 1.6 and 2.0% and of VS between 1.2 and 1.6%. The mean reductions of TS were 57.7 to 64.7% and of VS from 61.7 to 69.0%, and there was only difference in the finishing phase, in which the major averages reductions were produced by the biodigesters supplied with feces from animals fed with diets based on corn. In biodigesters supplied with feces from animals in the initial and growing stages fed with diets based on corn, were observed higher average productions of biogas and the greatest average potentials of biogas production. The average potentials obtained were 0.033; 0.181; 0.685; 0.788 and 1.132 m 3 per kg of affluent, manure, TS added, VS added and VS reduced, respectively. No differences were found on the average content of methane in the biogas between diets and stages. The average concentrations of nutrients N, P, K, Ca, Mg, Na, Fe, Mn, Zn and Cu in the biodigester affluent and effluent, ranged between diets and stages.KEYWORDS: biodigesters, biogas, pig feces, environmental impact. BIODIGESTÃO ANAERÓBIA DE DEJETOS DE SUÍNOS NAS DIFERENTES FASES ALIMENTADOS COM DIETAS FORMULADAS COM MILHO OU SORGO RESUMO:Objetivou-se avaliar a produção e a qualidade do biogás e do biofertilizante obtidos em biodigestores abastecidos com dejetos de suínos, nas fases inicial, crescimento e terminação, alimentados com dietas formuladas à base de milho ou sorgo. Foram utilizados 20 biodigestores de bancada, com tempo de retenção hidráulica de 30 dias, e cargas diárias que continham 4,0 a 6,0% de sólidos totais (ST) e 3,6 a 5,2% de sólidos voláteis (SV). Nos efluentes dos biodigestores, foram verificados teores médios de ST variando de 1,6 a 2,0% e de SV entre 1,2 e 1,6%. As reduções médias de ST foram de 57,7 a 64,7% e de SV de 61,7 a 69,0%, sendo que houve diferença somente na fase de terminação, na qual as maiores reduções médias foram para biodigestores abastecidos com dejetos de animais alimentados com dietas à base de milho. Nos biodigestores abastecidos com dejetos de animais em fase inicial e de crescimento, alimentados com dietas formuladas à base de milho, foram verificadas maiores produções médias de biogás e os maiores potenciais médios de produção de biogás. Os potenciais médios obtidos foram 0,033; 0,181; 0,685; 0,788 e 1,132 m 3 por kg de afluente, estrume, ST adicionados, SV adicionados e SV reduzidos, respectivamente. Não foram verificadas diferenças quanto ao teor médio de metano no biogás entre dietas e fases. As concentrações médias dos nutrientes N, P, K, Ca, Mg, Na, Fe, Mn, Zn e Cu no afluent...

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Section: Introductionmentioning

confidence: 99%

Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum

et al. 2012

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“…A concentração da DBO apresentou diminuição de 50%, com a passagem do material pelo biodigestor (Tabela 2), eficiência de redução inferior a 75% observada por Campos et al (2005), tratando laboratorialmente dejetos da suinocultura em reator de fluxo ascendente com manta de lodo (UASB); entretanto, quando comparada com a magnitude da remoção da DBO, o valor obtido neste trabalho (915 mg L -1 ) foi maior em relação ao da encontrada por esses autores (670 mg L -1 ).…”

Section: Resultsunclassified

“…Houve redução de 84% na DQO com o tratamento, valor superior aos 78% encontrados por Campos et al (2005) tratando laboratorialmente dejetos suínos em reator UASB. Como na DBO se mede apenas a fração biodegradável, quanto mais este valor se aproximar da DQO significa que mais facilmente biodegradável será o efluente.…”

Section: Resultsunclassified

Biodigestão anaeróbia de dejetos de caprinos e ovinos em reator contínuo de PVC flexível

Quadros

Oliver

Regis³

et al. 2010

Rev. bras. eng. agríc. ambient.

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RESUMOA escassez de fontes energéticas e as altas taxas de mortalidade do rebanho são dois grandes problemas para os agricultores familiares no semiárido brasileiro. De setembro de 2006 a abril de 2007 um reator contínuo com gasômetro em PVC flexível, com 33 m 3 de volume, instalado na Estação Experimental da EBDA, Jaguarari, Estado da Bahia, foi monitorado quanto aos parâmetros bioquímicos, microbiológicos e parasitários do afluente e efluente, sendo avaliadas a produção e a composição do biogás, além da utilização do biofertilizante em capim-elefante. Com o manejo adequado, o poder poluente dos dejetos foi reduzido significativamente. Microbiologicamente, a eficiência de remoção de coliformes totais e fecais se manteve acima de 98% enquanto os ovos dos principais endoparasitos foram eliminados com o tratamento. A produção de biogás foi de 0,061 m 3 kg -1 de esterco. Basicamente, o biogás apresentou, em sua composição, 58 e 34% de metano e gás carbônico, respectivamente. O biofertilizante (pH 7,5) foi uma boa fonte de nutrientes, sobretudo de nitrogênio (64 g 100L -1 , 80% na forma amoniacal) e potássio (214 g 100L -1 ), aumentando a produção de forragem sem alterações significativas na composição bromatológica, digestibilidade "in vitro" da matéria seca e teor de minerais.Palavras-chave: biofertilizante, biogás, energia renovável, esterco Anaerobic digestion of goat and sheep wastes in a continuous reactor of flexible PVC ABSTRACTThe scarcity of energy resources and the high livestock mortality rates are perpetual problems for small farmers of the Brazilian semi-arid region. From September 2006 to April 2007 a continuous reactor, of 33 m 3 with gasometer in PVC flexible film, was installed at the EBDA Experimental Station, Jaguarari, Bahia State and the affluent and effluent biochemical, microbiological, and parasitological characteristics were monitored, the biogas production and composition being evaluated, as well as the use of the biofertilizer in elephant grass. With adequate management, the pollution power of residues reduced significantly. Microbiologically, the efficiency of total and fecal coliforms remotion was above 98%, when the main endoparasite eggs were eliminated after treatment. The biogas production was 0.061 m 3 kg -1 of manure. The biogas showed in its composition basically 58 and 34% of methane and carbonic dioxide, respectively. The biofertilizer (pH 7.5) was a great source of nutrients, mainly nitrogen (64 g 100L -1 , 80% ammoniacal form) and potassium (214 g 100L -1 ), increasing forage production, without significant changes in the chemical composition, "in vitro" dry matter digestibility, and mineral content.

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“…In studies conducted by Campos et al (2005) on the evaluation of biogas production potential and the anaerobic treatment efficiency sludge cover (UASB) as fed by swine waste, the average production of biogas and methane ranges from 0.03 and 0.36 L/day, with an average performance of 0.14 L/day. According to Trevisan (2013), for biogas produced by swine manure supplemented with ractopamine, there was a biogas production between 0.024 and 0.029 m 3 /kg, with TDH of 35 days.…”

Section: Biogas Productionmentioning

confidence: 99%

Treatments and utilization of swine waste in Brazil

Frigo¹,

Feiden²,

Sampaio³

et al. 2017

Afr. J. Agric. Res.

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Swine wastes obtained from farming activities have the greatest impact on the environment by environmental agencies. Swine wastes together with poor management represent risks to the environment. In Brazil, these activities significantly increased in the last years and from 2014, the country became the fourth largest producer in the world. Swine wastes are generated in high amounts due to the confinement system used nowadays. This, coupled with the poor management of these wastes is now a serious problem to the environment. Therefore, the treatment of this waste is essential to maximize integration between environment and production. Based on this, the aim of this study is to perform a bibliographic survey of the swine waste treatment used mostly in Brazil and the ones that stand out most.

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Avaliação do potencial de produção de biogás e da eficiência de tratamento do reator anaeróbio de manta de lodo (UASB) alimentado com dejetos de suínos

Cited by 16 publications

References 0 publications

Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum

Anaerobic biodigestion of pigs feces in the initial, growing and finishing stages fed with diets formulated with corn or sorghum

Biodigestão anaeróbia de dejetos de caprinos e ovinos em reator contínuo de PVC flexível

Treatments and utilization of swine waste in Brazil

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