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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Pecuária Sul; Embrapa Unidades Centrais. |
Data corrente: |
08/01/1991 |
Data da última atualização: |
22/01/2016 |
Autoria: |
ENCARNAÇÃO, R. de O.; SILVA, L. O. C. da; CORREA, E. S.; NOBRE, P. R. C. |
Afiliação: |
EMBRAPA. Centro Nacional de Pesquisa de Gado de Corte (Campo Grande, MS). |
Título: |
Reações fisiológicas em diferentes grupos genéticos de bovinos de corte sob pastejo. |
Ano de publicação: |
1983 |
Fonte/Imprenta: |
Campo Grande, MS : EMBRAPA, CNPGC, 1983. |
Páginas: |
4 p. |
Série: |
(EMBRAPA-CNPGC. Pesquisa em Andamento, 22). |
Idioma: |
Português |
Notas: |
CNPGC. |
Palavras-Chave: |
Adaptação; Adaptation; Charoles; Charolois; Fleckvieh; Genético; Grupo; Ibage; Nelore; Reação. |
Thesagro: |
Bovino; Corte; Cruzamento; Fisiologia; Pastejo. |
Thesaurus Nal: |
cattle; Chianina; grazing; Nellore; physiology. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/137544/1/PESQ-EM-ANDAMENTO-22.pdf
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Marc: |
LEADER 01019nam a2200409 a 4500 001 1318094 005 2016-01-22 008 1983 bl uuuu u0uu1 u #d 100 1 $aENCARNAÇÃO, R. de O. 245 $aReações fisiológicas em diferentes grupos genéticos de bovinos de corte sob pastejo. 260 $aCampo Grande, MS : EMBRAPA, CNPGC$c1983 300 $a4 p. 490 $a(EMBRAPA-CNPGC. Pesquisa em Andamento, 22). 500 $aCNPGC. 650 $acattle 650 $aChianina 650 $agrazing 650 $aNellore 650 $aphysiology 650 $aBovino 650 $aCorte 650 $aCruzamento 650 $aFisiologia 650 $aPastejo 653 $aAdaptação 653 $aAdaptation 653 $aCharoles 653 $aCharolois 653 $aFleckvieh 653 $aGenético 653 $aGrupo 653 $aIbage 653 $aNelore 653 $aReação 700 1 $aSILVA, L. O. C. da 700 1 $aCORREA, E. S. 700 1 $aNOBRE, P. R. C.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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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. |
Registro Completo
Biblioteca(s): |
Embrapa Suínos e Aves. |
Data corrente: |
15/04/2021 |
Data da última atualização: |
16/07/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
CHINI, A.; HOLLAS, C. E.; BOLSAN, A. C.; ANTES, F. G.; TREICHEL, H.; KUNZ, A. |
Afiliação: |
ANGELICA CHINI, Unioeste/Cascavel; CAMILA ESTER HOLLAS, Unioeste/Cascavel; ALICE CHIAPETTI BOLSAN, Unoesc/Joaçaba; FABIANE GOLDSCHMIDT ANTES, CNPSA; HELEN TREICHEL, UFFS/Erechim; AIRTON KUNZ, CNPSA. |
Título: |
Treatment of digestate from swine sludge continuous stirred tank reactor to reduce total carbon and total solids content. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Environment, Development and Sustainability, v. 23, p. 12326-12341, 2021. |
DOI: |
https://doi.org/10.1007/s10668-020-01170-6 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Anaerobic digestion is a biological process that can partially convert organic matter into gases with potential to energy generation. However, in case of continuous stirred tank reactor (CSTR) for the treatment of sludge from swine manure, a digestate with a high concentration of solids, undigested carbon, nitrogen and phosphorus is usually obtained, which can limit the direct application to the soil or other direct uses or disposal. Therefore, an additional treatment of digestate is still needed to meet environmental requirements for the viability of an anaerobic digestion plant to enable the disposal of the liquid effluent. In this study, solid-liquid separation (SLS) strategies were studied for treatment of digestate from swine sludge CSTR biodigester. The following processes were tested: settling, centrifugation and chemical flocculation.The performance of each process was evaluated by monitoring the concentrations of the following parameters in the raw digestate and after treatment: total carbon (TC), phosphorus, total kjeldahl nitrogen, ammonia nitrogen, total solids (TS), volatile solids and fixed solids. The factorial design was used for the optimization of centrifugation and chemical flocculation tests. Total carbon, solids and phosphorus were significantly reduced from digestate using the different SLS processes. However, higher removal efficiencies were obtained by centrifugation, being more expressive to phosphorus, TC and TS (reduction of 95, 90 and 83%, respectively). Furthermore, the sludge production by centrifugation was 3.8 and 7.3 times lower than by settling and chemical flocculation, respectively. Thus, centrifugation could be considered the most appropriate SLS process to enable digestate treatment and the liquid efluent is suitable to be treated by deammonification process for nitrogen removal. MenosAbstract: Anaerobic digestion is a biological process that can partially convert organic matter into gases with potential to energy generation. However, in case of continuous stirred tank reactor (CSTR) for the treatment of sludge from swine manure, a digestate with a high concentration of solids, undigested carbon, nitrogen and phosphorus is usually obtained, which can limit the direct application to the soil or other direct uses or disposal. Therefore, an additional treatment of digestate is still needed to meet environmental requirements for the viability of an anaerobic digestion plant to enable the disposal of the liquid effluent. In this study, solid-liquid separation (SLS) strategies were studied for treatment of digestate from swine sludge CSTR biodigester. The following processes were tested: settling, centrifugation and chemical flocculation.The performance of each process was evaluated by monitoring the concentrations of the following parameters in the raw digestate and after treatment: total carbon (TC), phosphorus, total kjeldahl nitrogen, ammonia nitrogen, total solids (TS), volatile solids and fixed solids. The factorial design was used for the optimization of centrifugation and chemical flocculation tests. Total carbon, solids and phosphorus were significantly reduced from digestate using the different SLS processes. However, higher removal efficiencies were obtained by centrifugation, being more expressive to phosphorus, TC and TS (reduction of 95, 90 and 83... Mostrar Tudo |
Palavras-Chave: |
Chemical flocculation; Estrume de suínos; Floculação química; Settling; Swine manure. |
Thesagro: |
Águas Residuais; Assentamento; Centrifugação; Dejeto; Floculação; Suíno. |
Thesaurus NAL: |
Centrifugation; Wastewater treatment. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02904naa a2200349 a 4500 001 2131304 005 2021-07-16 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s10668-020-01170-6$2DOI 100 1 $aCHINI, A. 245 $aTreatment of digestate from swine sludge continuous stirred tank reactor to reduce total carbon and total solids content.$h[electronic resource] 260 $c2021 520 $aAbstract: Anaerobic digestion is a biological process that can partially convert organic matter into gases with potential to energy generation. However, in case of continuous stirred tank reactor (CSTR) for the treatment of sludge from swine manure, a digestate with a high concentration of solids, undigested carbon, nitrogen and phosphorus is usually obtained, which can limit the direct application to the soil or other direct uses or disposal. Therefore, an additional treatment of digestate is still needed to meet environmental requirements for the viability of an anaerobic digestion plant to enable the disposal of the liquid effluent. In this study, solid-liquid separation (SLS) strategies were studied for treatment of digestate from swine sludge CSTR biodigester. The following processes were tested: settling, centrifugation and chemical flocculation.The performance of each process was evaluated by monitoring the concentrations of the following parameters in the raw digestate and after treatment: total carbon (TC), phosphorus, total kjeldahl nitrogen, ammonia nitrogen, total solids (TS), volatile solids and fixed solids. The factorial design was used for the optimization of centrifugation and chemical flocculation tests. Total carbon, solids and phosphorus were significantly reduced from digestate using the different SLS processes. However, higher removal efficiencies were obtained by centrifugation, being more expressive to phosphorus, TC and TS (reduction of 95, 90 and 83%, respectively). Furthermore, the sludge production by centrifugation was 3.8 and 7.3 times lower than by settling and chemical flocculation, respectively. Thus, centrifugation could be considered the most appropriate SLS process to enable digestate treatment and the liquid efluent is suitable to be treated by deammonification process for nitrogen removal. 650 $aCentrifugation 650 $aWastewater treatment 650 $aÁguas Residuais 650 $aAssentamento 650 $aCentrifugação 650 $aDejeto 650 $aFloculação 650 $aSuíno 653 $aChemical flocculation 653 $aEstrume de suínos 653 $aFloculação química 653 $aSettling 653 $aSwine manure 700 1 $aHOLLAS, C. E. 700 1 $aBOLSAN, A. C. 700 1 $aANTES, F. G. 700 1 $aTREICHEL, H. 700 1 $aKUNZ, A. 773 $tEnvironment, Development and Sustainability$gv. 23, p. 12326-12341, 2021.
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