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Registro Completo |
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
14/09/2018 |
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Data da última atualização: |
31/10/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RIBEIRO, E. A. dos S.; PASTANA, D. N. B.; BUFALINO, L.; LIRA-GUEDES, A. C.; GUEDES, M. C. |
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Afiliação: |
EDIELZA ALINE DO SANTOS RIBEIRO, Ueap; DAYANE NATHÁLIA BARBOSA PASTANA, Ueap; LINA BUFALINO, Ufra; ANA CLAUDIA LIRA GUEDES, CPAF-AP; MARCELINO CARNEIRO GUEDES, CPAF-AP. |
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Título: |
Immediate analysis and thermogravimetric of açaí seeds produced in the Amazon River Estuary. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: CONGRESSO FLORESTAL LATINO-AMERICANO, 7., 2018, Vitória. [Anais]. [S.l.]: Even3, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Açaí is a source of wealth for riverine families and has been promoting the development of the Amazon River estuary. After depulping the fruits to produce the wine, the seeds of açaí are deposited near the houses without proper destination. This problem can become a solution, generating green energy in isolated communities. The aim of this study is estimate the energetic potential of açaí seeds. This work was done in Ilha das Cinzas, Gurupá-PA, Eastern Amazon. The samples were collected with 10 families (n = 40), packed and sent to a forced ventilation oven 105 ± 2ºC. It was done an immediate analysis, in duplicate, in accordance with ASTM D1762-84. The highest heating value (HHV) was determined with volatile material values, fixed carbon and ash content. In addition, the thermogravimetric analysis and differential scanning calorimetry were performed on the PerkinElmer TG-DSC equipment, model DSC-7. The mean values of volatile materials (74.57%), ash content (1.70%) and fixed carbon (23.74%) were similar to those found in the oil seed literature. HHV ranged from 19.91 MJ kg-1 to 20.10 MJ kg-1, indicating that the waste of açaí seeds is an excellent resource to be transformed into a biogas. The mean pulp content was 21% and the açaí seeds was 79%, with a moisture content of 30%. At 200oC, the mass loss increases rapidly, reaching maximum rate of 5% min-1 near 300oC. At a temperature of 500°C, all the organic mass was degraded, passing through the combustion and gasification process, leaving only a small amount of ash. At the beginning of the heating, until the temperature near 100ºC, energy consumption occurs. Thereafter, the release process begins, increasing with increasing temperature, with a small peak near 320oC and maximum enthalpy close to 500oC. The variation of the açaí seed enthalpy, enables it to the energetic use, whose optimization depends on equipment that can keep temperatures above 300ºC. Seasonality production influences the yield of açaí seed considerably. In the off-season production, the pulp proportion decreases and the seed proportion increases. These experimental results confirm the qualitative potential of açaí seeds as a source of bioenergy, and the possibility of its use to help solve the problem of isolated Amazonian communities that still live without regular energy supply. MenosAçaí is a source of wealth for riverine families and has been promoting the development of the Amazon River estuary. After depulping the fruits to produce the wine, the seeds of açaí are deposited near the houses without proper destination. This problem can become a solution, generating green energy in isolated communities. The aim of this study is estimate the energetic potential of açaí seeds. This work was done in Ilha das Cinzas, Gurupá-PA, Eastern Amazon. The samples were collected with 10 families (n = 40), packed and sent to a forced ventilation oven 105 ± 2ºC. It was done an immediate analysis, in duplicate, in accordance with ASTM D1762-84. The highest heating value (HHV) was determined with volatile material values, fixed carbon and ash content. In addition, the thermogravimetric analysis and differential scanning calorimetry were performed on the PerkinElmer TG-DSC equipment, model DSC-7. The mean values of volatile materials (74.57%), ash content (1.70%) and fixed carbon (23.74%) were similar to those found in the oil seed literature. HHV ranged from 19.91 MJ kg-1 to 20.10 MJ kg-1, indicating that the waste of açaí seeds is an excellent resource to be transformed into a biogas. The mean pulp content was 21% and the açaí seeds was 79%, with a moisture content of 30%. At 200oC, the mass loss increases rapidly, reaching maximum rate of 5% min-1 near 300oC. At a temperature of 500°C, all the organic mass was degraded, passing through the combustion and gasification p... Mostrar Tudo |
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Thesagro: |
Açaí; Bioenergia; Euterpe Oleracea; Resíduo. |
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Thesaurus Nal: |
Agricultural wastes; Bioenergy. |
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Categoria do assunto: |
Q Alimentos e Nutrição Humana |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183014/1/CPAF-AP-2018-Immediate-analysis-and-thrmogravimetric-of-acai.pdf
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Marc: |
LEADER 03079nam a2200229 a 4500
001 2095734
005 2018-10-31
008 2018 bl uuuu u00u1 u #d
100 1 $aRIBEIRO, E. A. dos S.
245 $aImmediate analysis and thermogravimetric of açaí seeds produced in the Amazon River Estuary.$h[electronic resource]
260 $aIn: CONGRESSO FLORESTAL LATINO-AMERICANO, 7., 2018, Vitória. [Anais]. [S.l.]: Even3$c2018
520 $aAçaí is a source of wealth for riverine families and has been promoting the development of the Amazon River estuary. After depulping the fruits to produce the wine, the seeds of açaí are deposited near the houses without proper destination. This problem can become a solution, generating green energy in isolated communities. The aim of this study is estimate the energetic potential of açaí seeds. This work was done in Ilha das Cinzas, Gurupá-PA, Eastern Amazon. The samples were collected with 10 families (n = 40), packed and sent to a forced ventilation oven 105 ± 2ºC. It was done an immediate analysis, in duplicate, in accordance with ASTM D1762-84. The highest heating value (HHV) was determined with volatile material values, fixed carbon and ash content. In addition, the thermogravimetric analysis and differential scanning calorimetry were performed on the PerkinElmer TG-DSC equipment, model DSC-7. The mean values of volatile materials (74.57%), ash content (1.70%) and fixed carbon (23.74%) were similar to those found in the oil seed literature. HHV ranged from 19.91 MJ kg-1 to 20.10 MJ kg-1, indicating that the waste of açaí seeds is an excellent resource to be transformed into a biogas. The mean pulp content was 21% and the açaí seeds was 79%, with a moisture content of 30%. At 200oC, the mass loss increases rapidly, reaching maximum rate of 5% min-1 near 300oC. At a temperature of 500°C, all the organic mass was degraded, passing through the combustion and gasification process, leaving only a small amount of ash. At the beginning of the heating, until the temperature near 100ºC, energy consumption occurs. Thereafter, the release process begins, increasing with increasing temperature, with a small peak near 320oC and maximum enthalpy close to 500oC. The variation of the açaí seed enthalpy, enables it to the energetic use, whose optimization depends on equipment that can keep temperatures above 300ºC. Seasonality production influences the yield of açaí seed considerably. In the off-season production, the pulp proportion decreases and the seed proportion increases. These experimental results confirm the qualitative potential of açaí seeds as a source of bioenergy, and the possibility of its use to help solve the problem of isolated Amazonian communities that still live without regular energy supply.
650 $aAgricultural wastes
650 $aBioenergy
650 $aAçaí
650 $aBioenergia
650 $aEuterpe Oleracea
650 $aResíduo
700 1 $aPASTANA, D. N. B.
700 1 $aBUFALINO, L.
700 1 $aLIRA-GUEDES, A. C.
700 1 $aGUEDES, M. C.
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Registro original: |
Embrapa Amapá (CPAF-AP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Agroindústria Tropical. |
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Data corrente: |
21/02/2011 |
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Data da última atualização: |
08/07/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
ROCHA, É. da J. T.; EVANGELISTA, S. R. M.; FUCK JÚNIOR, S. C. de F.; GONDIM, R. S. |
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Afiliação: |
ÉRIKA DA JUSTA TEIXEIRA ROCHA, UFC; SÍLVIO ROBERTO MEDEIROS EVANGELISTA, CNPTIA; SÉRGIO CÉSAR DE FRANÇA FUCK JÚNIOR, CNPAT; RUBENS SONSOL GONDIM, CNPAT. |
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Título: |
Estimativa da Eto pelo modelo Penman-Monteith FAO com dados mínimos integrada a um Sistema de Informação Geográfica. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Ciência Agronômica, Fortaleza, v. 42, n. 1, p. 75-83, jan./mar. 2011. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo do presente trabalho foi avaliar a metodologia de estimativa da EtoPM utilizando dados mínimos integrados a um Sistema de Informação Geográfica, na bacia do Jaguaribe, Ceará. Foi utilizado o sistema integrado de modelagem regional PRECIS (Providing Regional Climates for Impacts Studies), versão 1.2, utilizando as condições de contorno do Modelo Climático Global, HadAM3P, acoplado ao Modelo Climático Regional (HadRM3P), através da técnica dinâmica de redução de escala (downscaling). Dados mensais de temperaturas máxima e mínima e precipitação foram gerados para o período de 1961-1990, os quais foram analisados quanto a sua variabilidade espacial (latitude/longitude), utilizando-se geoestatística (krigagem). Para validação, foi aplicada regressão linear entre EtoPM estimada com dados mínimos e estimada com dados medidos através de uma estação meteorológica de referência. A média da EtoPM anual estimada com dados mínimos situou-se em 1.719 mm. A metodologia funcionou satisfatoriamente na região estudada, considerando-se os resultados da regressão (coeficiente angular de 0,95, coeficiente de determinação de 0,902, resíduos menores que 0,45 mm dia-1 e Raiz do Quadrado Médio do Erro (RQME) igual a 0,067 mm dia-1). |
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Palavras-Chave: |
Geographical information systems; Modelagem; Modeling; Modelo climático; Modelo Penman-Monteith; Redução de escala. |
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Thesagro: |
Evapotranspiração; Sistema de Informação Geográfica; Temperatura. |
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Thesaurus NAL: |
Evapotranspiration. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/33126/1/estimativa.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42162/1/AB211002.pdf
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Marc: |
LEADER 02175naa a2200277 a 4500
001 1878232
005 2011-07-08
008 2011 bl uuuu u00u1 u #d
100 1 $aROCHA, É. da J. T.
245 $aEstimativa da Eto pelo modelo Penman-Monteith FAO com dados mínimos integrada a um Sistema de Informação Geográfica.
260 $c2011
520 $aO objetivo do presente trabalho foi avaliar a metodologia de estimativa da EtoPM utilizando dados mínimos integrados a um Sistema de Informação Geográfica, na bacia do Jaguaribe, Ceará. Foi utilizado o sistema integrado de modelagem regional PRECIS (Providing Regional Climates for Impacts Studies), versão 1.2, utilizando as condições de contorno do Modelo Climático Global, HadAM3P, acoplado ao Modelo Climático Regional (HadRM3P), através da técnica dinâmica de redução de escala (downscaling). Dados mensais de temperaturas máxima e mínima e precipitação foram gerados para o período de 1961-1990, os quais foram analisados quanto a sua variabilidade espacial (latitude/longitude), utilizando-se geoestatística (krigagem). Para validação, foi aplicada regressão linear entre EtoPM estimada com dados mínimos e estimada com dados medidos através de uma estação meteorológica de referência. A média da EtoPM anual estimada com dados mínimos situou-se em 1.719 mm. A metodologia funcionou satisfatoriamente na região estudada, considerando-se os resultados da regressão (coeficiente angular de 0,95, coeficiente de determinação de 0,902, resíduos menores que 0,45 mm dia-1 e Raiz do Quadrado Médio do Erro (RQME) igual a 0,067 mm dia-1).
650 $aEvapotranspiration
650 $aEvapotranspiração
650 $aSistema de Informação Geográfica
650 $aTemperatura
653 $aGeographical information systems
653 $aModelagem
653 $aModeling
653 $aModelo climático
653 $aModelo Penman-Monteith
653 $aRedução de escala
700 1 $aEVANGELISTA, S. R. M.
700 1 $aFUCK JÚNIOR, S. C. de F.
700 1 $aGONDIM, R. S.
773 $tRevista Ciência Agronômica, Fortaleza$gv. 42, n. 1, p. 75-83, jan./mar. 2011.
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Embrapa Agricultura Digital (CNPTIA) |
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