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 | Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
30/03/2015 |
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Data da última atualização: |
30/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AMARAL, A. C. do; KUNZ, A.; STEINMETZ, R. L. R.; JUSTI, K. C. |
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Afiliação: |
ANDRÉ CESTONADO DO AMARAL, UTFPR/Guarapuava; AIRTON KUNZ, CNPSA; RICARDO LUIS RADIS STEINMETZ, CNPSA; KARIN CRISTIANE JUSTI, Midwestern State University. |
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Título: |
Zinc and copper distribution in swine wastewater treated by anaerobic digestion. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Environmental Management, v.14, p. 132-137, 2014. |
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DOI: |
10.1016/j.jenvman.2014.03.021 |
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Idioma: |
Inglês |
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Conteúdo: |
Swine wastewater contain high levels of metals, such as copper and zinc, which can cause a negative impact on the environment. Anaerobic digestion is a process commonly used to remove carbon, and can act on metal availability (e.g., solubility or oxidation state). The present study aimed to evaluate the influence of anaerobic digestion on total Zn and Cu contents, and their chemical fractioning due to the biodegradation of the effluent over different hydraulic retention times (HRTs). The sequential extraction protocol proposed by the Community Bureau of Reference (BCR), plus two additional fractions, was the method chosen for this study of Cu and Zn distribution evaluation in swine wastewater. The Zn and Cu concentrations in raw swine manure were 63.58 27.72 mg L1 and 8.98 3.99 mg L1, respectively. The metal retention capacity of the bioreactor decreased when the HRT was reduced from 17.86 d to 5.32 d. Anaerobic digestion had a direct influence on zinc and copper distribution when raw manure (RM) and digested manure (DM) were compared. The reducible fraction showed a reduction of between 3.17% and 7.84% for Zn and between 2.52% and 11.92% for Cu when DM was compared with RM. However, the metal concentration increased in the oxidizable fraction of DM, viz. from 3.01% to 10.64% for Zn and from 4.49% to 16.71% for Cu, thus demonstrating the effect of anaerobic conditions on metal availability. |
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Palavras-Chave: |
Digestão anaeróbica; Tratamento de água. |
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Thesagro: |
Biodegradação; Dejeto; Metal; Suíno. |
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Thesaurus Nal: |
Anaerobic digestion; Biodegradation; Swine; Wastewater treatment. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02244naa a2200289 a 4500
001 2012412
005 2015-03-30
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1016/j.jenvman.2014.03.021$2DOI
100 1 $aAMARAL, A. C. do
245 $aZinc and copper distribution in swine wastewater treated by anaerobic digestion.$h[electronic resource]
260 $c2014
520 $aSwine wastewater contain high levels of metals, such as copper and zinc, which can cause a negative impact on the environment. Anaerobic digestion is a process commonly used to remove carbon, and can act on metal availability (e.g., solubility or oxidation state). The present study aimed to evaluate the influence of anaerobic digestion on total Zn and Cu contents, and their chemical fractioning due to the biodegradation of the effluent over different hydraulic retention times (HRTs). The sequential extraction protocol proposed by the Community Bureau of Reference (BCR), plus two additional fractions, was the method chosen for this study of Cu and Zn distribution evaluation in swine wastewater. The Zn and Cu concentrations in raw swine manure were 63.58 27.72 mg L1 and 8.98 3.99 mg L1, respectively. The metal retention capacity of the bioreactor decreased when the HRT was reduced from 17.86 d to 5.32 d. Anaerobic digestion had a direct influence on zinc and copper distribution when raw manure (RM) and digested manure (DM) were compared. The reducible fraction showed a reduction of between 3.17% and 7.84% for Zn and between 2.52% and 11.92% for Cu when DM was compared with RM. However, the metal concentration increased in the oxidizable fraction of DM, viz. from 3.01% to 10.64% for Zn and from 4.49% to 16.71% for Cu, thus demonstrating the effect of anaerobic conditions on metal availability.
650 $aAnaerobic digestion
650 $aBiodegradation
650 $aSwine
650 $aWastewater treatment
650 $aBiodegradação
650 $aDejeto
650 $aMetal
650 $aSuíno
653 $aDigestão anaeróbica
653 $aTratamento de água
700 1 $aKUNZ, A.
700 1 $aSTEINMETZ, R. L. R.
700 1 $aJUSTI, K. C.
773 $tJournal of Environmental Management$gv.14, p. 132-137, 2014.
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
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Tipo/Formato |
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Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
07/07/2017 |
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Data da última atualização: |
22/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LOPES, C. M.; PACIULLO, D. S. C.; ARAÚJO, S. A. do C.; MORENZ, M. J. F.; GOMIDE, C. A. de M.; MAURÍCIO, R. M.; BRAZ, T. G. dos S. |
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Afiliação: |
Clenardo Macedo Lopes, UFVJM; DOMINGOS SAVIO CAMPOS PACIULLO, CNPGL; Saulo Alberto do Carmo Araújo, UFVJM; MIRTON JOSE FROTA MORENZ, CNPGL; CARLOS AUGUSTO DE MIRANDA GOMIDE, CNPGL; Rogério Martins Maurício, UFSJ; Thiago Gomes dos Santos Braz, UFMG. |
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Título: |
Plant morphology and herbage accumulation of signal grass with or without fertilization, under different light regimes. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Ciência Rural, v. 47, n. 2, e20160472, 2017. |
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DOI: |
https://doi.org/10.1590/0103-8478cr20160472 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem. O objetivo deste estudo foi avaliar a morfogênese, a estrutura do dossel e o acúmulo de forragem deBrachiaria decumbens , submetida a três regimes de luz (0, 20 e 70% de sombreamento natural) e dois níveis de fertilização (presença ou ausência de nitrogênio, fósforo e potássio). As taxas de alongamento de folhas e colmos aumentaram com o sombreamento, mas não variaram com a fertilização. A taxa de aparecimento de folhas foi maior com a fertilização, mas, em geral, foi semelhante entre os níveis de sombra. A densidade de perfilhos foi maior no sol pleno e menor na sombra intensa. A densidade de perfilhos respondeu à fertilização sob sol pleno e sombra moderada. O acúmulo de forragem aumentou 42% com a fertilização no sol pleno, 12% na sombra moderada e não variou na sombra intensa. Os resultados mostraram que, mesmo com uso de fertilização, o acúmulo de forragem foi limitado pela redução de luz. Em condições de sombra moderada, a fertilização foi importante para aumentar a população de perfilhos ao longo dos ciclos de crescimento. MenosABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem.... Mostrar Tudo |
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Palavras-Chave: |
Shading; Silvopastoral system; Tiller density. |
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Thesagro: |
Brachiaria Decumbens. |
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Thesaurus NAL: |
morphogenesis. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161522/1/Cnpgl-2017-CiRural-Lopes-Plant.pdf
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Marc: |
LEADER 03431naa a2200265 a 4500
001 2072260
005 2022-08-22
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/0103-8478cr20160472$2DOI
100 1 $aLOPES, C. M.
245 $aPlant morphology and herbage accumulation of signal grass with or without fertilization, under different light regimes.$h[electronic resource]
260 $c2017
520 $aABSTRACT - The silvopastoral system has been suggested as an alternative to recover degraded pastures in tropical regions. However, trees reduce the light available for pastures, which may affect the growth and herbage accumulation. The objective of this study was to evaluate the morphogenesis, canopy structure and herbage accumulation of signalgrass (Brachiaria decumbens) subjected to three light regimes (0,20 and 70% of natural shading) and two fertilization levels (presence or absence of nitrogen, phosphorus and potassium). Leaf and stem elongation rates increased under shading but did not vary with fertilization. The leaf appearance rate was greater under fertilizer treatment but was generally similar among light regimes. The tiller density was greater in full sun and lower in intense shading. Tiller density responded to fertilization under full sun and moderate shading. Herbage accumulation increased by 42% with fertilization under full sun, 12% under moderate shading and did not vary under intense shading. Results showed that even under fertilization the herbage accumulation was limited by reduced light. However, under moderate shade the fertilization was important to raise tiller population over the growth cycles. RESUMO - Os sistemas silvipastoris têm sido sugeridos como alternativa para recuperação de pastagens em regiões tropicais. Entretanto, as árvores reduzem a disponibilidade de radiação para o pasto, o que pode influenciar no crescimento e acúmulo de forragem. O objetivo deste estudo foi avaliar a morfogênese, a estrutura do dossel e o acúmulo de forragem deBrachiaria decumbens , submetida a três regimes de luz (0, 20 e 70% de sombreamento natural) e dois níveis de fertilização (presença ou ausência de nitrogênio, fósforo e potássio). As taxas de alongamento de folhas e colmos aumentaram com o sombreamento, mas não variaram com a fertilização. A taxa de aparecimento de folhas foi maior com a fertilização, mas, em geral, foi semelhante entre os níveis de sombra. A densidade de perfilhos foi maior no sol pleno e menor na sombra intensa. A densidade de perfilhos respondeu à fertilização sob sol pleno e sombra moderada. O acúmulo de forragem aumentou 42% com a fertilização no sol pleno, 12% na sombra moderada e não variou na sombra intensa. Os resultados mostraram que, mesmo com uso de fertilização, o acúmulo de forragem foi limitado pela redução de luz. Em condições de sombra moderada, a fertilização foi importante para aumentar a população de perfilhos ao longo dos ciclos de crescimento.
650 $amorphogenesis
650 $aBrachiaria Decumbens
653 $aShading
653 $aSilvopastoral system
653 $aTiller density
700 1 $aPACIULLO, D. S. C.
700 1 $aARAÚJO, S. A. do C.
700 1 $aMORENZ, M. J. F.
700 1 $aGOMIDE, C. A. de M.
700 1 $aMAURÍCIO, R. M.
700 1 $aBRAZ, T. G. dos S.
773 $tCiência Rural$gv. 47, n. 2, e20160472, 2017.
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