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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
18/08/2008 |
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Data da última atualização: |
07/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GONZALEZ, M. H.; ARAÚJO, G. C. L.; PELIZARO, C. B.; MENEZES, E. A.; LEMOS, S. G.; SOUZA, G. B. de; NOGUEIRA, A. R. de A. |
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Afiliação: |
MARIO HENRIQUE GONZALES, UFSCar/SÃO CARLOS, SP.; GEÓRGIA C. L. ARAÚJO, USP; CLAÚDIA B. PELIZARO, UFSCar/SÃO CARLOS, SP.; EVELINE A. MENEZES, UFSCar/SÃO CARLOS, SP.; SHERLAN G. LEMOS, UFSCar/SÃO CARLOS, SP.; GILBERTO BATISTA DE SOUZA, CPPSE; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Coconut coir as bioserbent for Cr(VI) removal from laboratory wastewater. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Journal of Hazardous Materials, v. 159, n. 2-3, p. 252-256, nov. 2008. |
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DOI: |
10.1016/j.jhazmat.2008.02.014 |
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Idioma: |
Inglês |
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Conteúdo: |
A high cost-effective treatment of sulphochromic waste is proposed employing a raw coconut coir asbiosorbent for Cr(VI) removal. The ideal pH and sorption kinetic, sorption capacities, and sorption sites were the studied biosorbent parameters. After testing five different isotherm models with standard solutions, Redlich?Peterson and Toth best fitted the experimental data, obtaining a theoretical Cr(VI) sorption capacity (SC) of 6.3mgg-1. Acid?base potentiometric titration indicated around of 73% of sorption sites were from phenolic compounds, probably lignin. Differences between sorption sites in the coconut coir before and after Cr adsorption identified fromFourier transform infrared spectra suggested a modification of sorption sites after sulphochromic waste treatment, indicating that the sorption mechanism involves organic matter oxidation and chromium uptake. For sulphocromic waste treatment, the SC was improved to 26.8±0.2mgg-1, and no adsorbed Cr(VI) was reduced, remaining only Cr(III) in the final solution. The adsorbed materialwas calcinated to obtain Cr2O3, with a reduction of more than 60% of the original mass. |
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Palavras-Chave: |
Coconut coir; Cr; Sulphochromic wasterwater treatment. |
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Thesaurus Nal: |
biosorption. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01906naa a2200253 a 4500
001 1048501
005 2023-03-07
008 2008 bl uuuu u00u1 u #d
024 7 $a10.1016/j.jhazmat.2008.02.014$2DOI
100 1 $aGONZALEZ, M. H.
245 $aCoconut coir as bioserbent for Cr(VI) removal from laboratory wastewater.$h[electronic resource]
260 $c2008
520 $aA high cost-effective treatment of sulphochromic waste is proposed employing a raw coconut coir asbiosorbent for Cr(VI) removal. The ideal pH and sorption kinetic, sorption capacities, and sorption sites were the studied biosorbent parameters. After testing five different isotherm models with standard solutions, Redlich?Peterson and Toth best fitted the experimental data, obtaining a theoretical Cr(VI) sorption capacity (SC) of 6.3mgg-1. Acid?base potentiometric titration indicated around of 73% of sorption sites were from phenolic compounds, probably lignin. Differences between sorption sites in the coconut coir before and after Cr adsorption identified fromFourier transform infrared spectra suggested a modification of sorption sites after sulphochromic waste treatment, indicating that the sorption mechanism involves organic matter oxidation and chromium uptake. For sulphocromic waste treatment, the SC was improved to 26.8±0.2mgg-1, and no adsorbed Cr(VI) was reduced, remaining only Cr(III) in the final solution. The adsorbed materialwas calcinated to obtain Cr2O3, with a reduction of more than 60% of the original mass.
650 $abiosorption
653 $aCoconut coir
653 $aCr
653 $aSulphochromic wasterwater treatment
700 1 $aARAÚJO, G. C. L.
700 1 $aPELIZARO, C. B.
700 1 $aMENEZES, E. A.
700 1 $aLEMOS, S. G.
700 1 $aSOUZA, G. B. de
700 1 $aNOGUEIRA, A. R. de A.
773 $tJournal of Hazardous Materials$gv. 159, n. 2-3, p. 252-256, nov. 2008.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
10/07/1998 |
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Data da última atualização: |
07/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - B |
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Autoria: |
RITZINGER, C. H. S. P.; McSORLEY, R.; GALLAHER, R. N. |
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Afiliação: |
CECÍLIA HELENA S. PRATA RITZINGER, CPAF-AC; R. MCSORLEY, University of Florida; R. N. GALLAHER, University of Florida. |
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Título: |
Effect of organic amendment placement and inoculum density of Meloidogyne incognita on Okra seedlings. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Soil and Crop Sciences Society of Florida Proceedings, v. 56, p. 28-31, Sept. 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
In a greenhouse test, three treatments involving yard-waste compost amendment (applied to the soil surface, mixed with the soil, or no amendment were evaluated at three inoculum densities of Meloidogyne incognita race 1 (0,025, or 1000 juveniles pot). Plants responses were evaluated on the highly suscetible 'Clemson Spineless' okra (Hibiscus esculentus) during spring of 1994. There was a significant interaction (P< 0,05) between organic amendment placement and inoculum density for egg-mass rating, but not for galls, plant height, or top and root dry weights. Egg-mass rating was not affected by placement of the amendment on the surface or incorporation, but was significantly higher (P< 0,05) at the 1000 inoculum level when no organic amendment was used. Effects of inoculum density were significant(P< 0,05) for plant height, dry weight, and gall rating, and in some cases for shoot and root weights. Regardless of the inoculum concentration, the shortest plant height and lowest weights of shoots and roots were observed when the amendment was mixed with soil. Gall rating was no affected by organic amendment placement, but was affected by inoculum concentration, showing higher levels at the highest nematode density. |
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Palavras-Chave: |
Biofertilizantes; Controle de pragas; Elaboración de compost; Métodos de control; Nemátodo parasitario de las plantas; Okra cv Clemson Spineless. |
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Thesagro: |
Adubação; Compostagem; Hibiscus Esculentus; Meloidogyne Incognita; Nematóide; Parasito de Planta; Quiabo. |
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Thesaurus NAL: |
Biofertilizers; Composting; Control methods; Plant parasitic nematodes. |
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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/211507/1/1393.pdf
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Marc: |
LEADER 02322naa a2200349 a 4500
001 1492666
005 2022-03-07
008 1997 bl uuuu u00u1 u #d
100 1 $aRITZINGER, C. H. S. P.
245 $aEffect of organic amendment placement and inoculum density of Meloidogyne incognita on Okra seedlings.$h[electronic resource]
260 $c1997
520 $aIn a greenhouse test, three treatments involving yard-waste compost amendment (applied to the soil surface, mixed with the soil, or no amendment were evaluated at three inoculum densities of Meloidogyne incognita race 1 (0,025, or 1000 juveniles pot). Plants responses were evaluated on the highly suscetible 'Clemson Spineless' okra (Hibiscus esculentus) during spring of 1994. There was a significant interaction (P< 0,05) between organic amendment placement and inoculum density for egg-mass rating, but not for galls, plant height, or top and root dry weights. Egg-mass rating was not affected by placement of the amendment on the surface or incorporation, but was significantly higher (P< 0,05) at the 1000 inoculum level when no organic amendment was used. Effects of inoculum density were significant(P< 0,05) for plant height, dry weight, and gall rating, and in some cases for shoot and root weights. Regardless of the inoculum concentration, the shortest plant height and lowest weights of shoots and roots were observed when the amendment was mixed with soil. Gall rating was no affected by organic amendment placement, but was affected by inoculum concentration, showing higher levels at the highest nematode density.
650 $aBiofertilizers
650 $aComposting
650 $aControl methods
650 $aPlant parasitic nematodes
650 $aAdubação
650 $aCompostagem
650 $aHibiscus Esculentus
650 $aMeloidogyne Incognita
650 $aNematóide
650 $aParasito de Planta
650 $aQuiabo
653 $aBiofertilizantes
653 $aControle de pragas
653 $aElaboración de compost
653 $aMétodos de control
653 $aNemátodo parasitario de las plantas
653 $aOkra cv Clemson Spineless
700 1 $aMcSORLEY, R.
700 1 $aGALLAHER, R. N.
773 $tSoil and Crop Sciences Society of Florida Proceedings$gv. 56, p. 28-31, Sept. 1997.
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