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Registro Completo |
Biblioteca(s): |
Embrapa Pecuária Sul. |
Data corrente: |
17/11/2020 |
Data da última atualização: |
17/11/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
CIMIRRO, N. F. G. M.; LIMA, E. C.; CUNHA, M. R.; DIAS, S. L. P.; THUE, P. S.; MAZZOCATO, A. C.; DOTTO, G. L.; GELESKY, M. A.; PAVAN, F. A. |
Afiliação: |
Nilton F. G. M. Cimirro, UNIPAMPA; Eder C. Lima, UFRGS; Mariene R. Cunha, UNIPAMPA; Silvio L. P. Dias, UNIPAMPA; Pascal Silas Thue, UNIPAMPA; ANA CRISTINA MAZZOCATO, CPPSUL; Guilherme L. Dotto, UFSM; Marcos A. Gelesky, FURG; Flávio André Pavan, UNIPAMPA. |
Título: |
Removal of pharmaceutical compounds from aqueous solution by novel activated carbon synthesized from lovegrass (Poaceae). |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Environmental Science and Pollution Research, v. 27, n. 17, p. 21442-21454, June 2020. |
DOI: |
https://doi.org/10.1007/s11356-020-08617-3 |
Idioma: |
Inglês |
Conteúdo: |
In this work, lovegrass (Cpa), an abundant grass of the Poaceae family, was employed as feedstock for the production of activated carbon in a conventional furnace using ZnCl2 as a chemical activator. The prepared material (Cpa-AC) was characterized by pH of the point of zero charges (pHpzc), Boehm?s titration method, CHN/O elemental analysis, ATR-FTIR,N2 adsorption/ desorption curves, and SEM. This carbon material was used for adsorption of acetylsalicylic acid (ASA) and sodium diclofenac (DFC). FTIR analysis identified the presence of O-H, N-H, O-C=O), C-O, and aromatic ring bulk and surface of (Cpa-AC) adsorbent. The quantification of the surface functional groups showed the presence of a large amount of acidic functional groups on the surface of the carbon material. The isotherms of adsorption and desorption of N2 confirm that the Cpa-AC adsorbent is mesopore material with a large surface area of 1040 m2 g−1. SEM results showed that the surface of Cpa-AC is rugous. The kinetic study indicates that the system followed the pseudo-second-order model (pH 4.0). The equilibrium time was achieved at 45 (ASA) and 60 min (DCF). The Liu isotherm model best fitted the experimental data. The maxima sorption capacities (Qmax) for ASA and DFC at 25 °C were 221.7 mg g−1 and 312.4 mg g−1, respectively. The primary mechanism of ASA and DFC adsorption was justified considering electrostatic interactions and π-π interactions between the Cpa-AC and the adsorbate from the solution. Keywords Lovegrass . Conventional pyrolysis . Activated carbon . Pharmaceuticals contaminants . Adsorption MenosIn this work, lovegrass (Cpa), an abundant grass of the Poaceae family, was employed as feedstock for the production of activated carbon in a conventional furnace using ZnCl2 as a chemical activator. The prepared material (Cpa-AC) was characterized by pH of the point of zero charges (pHpzc), Boehm?s titration method, CHN/O elemental analysis, ATR-FTIR,N2 adsorption/ desorption curves, and SEM. This carbon material was used for adsorption of acetylsalicylic acid (ASA) and sodium diclofenac (DFC). FTIR analysis identified the presence of O-H, N-H, O-C=O), C-O, and aromatic ring bulk and surface of (Cpa-AC) adsorbent. The quantification of the surface functional groups showed the presence of a large amount of acidic functional groups on the surface of the carbon material. The isotherms of adsorption and desorption of N2 confirm that the Cpa-AC adsorbent is mesopore material with a large surface area of 1040 m2 g−1. SEM results showed that the surface of Cpa-AC is rugous. The kinetic study indicates that the system followed the pseudo-second-order model (pH 4.0). The equilibrium time was achieved at 45 (ASA) and 60 min (DCF). The Liu isotherm model best fitted the experimental data. The maxima sorption capacities (Qmax) for ASA and DFC at 25 °C were 221.7 mg g−1 and 312.4 mg g−1, respectively. The primary mechanism of ASA and DFC adsorption was justified considering electrostatic interactions and π-π interactions between the Cpa-AC and the adsorbate f... Mostrar Tudo |
Thesagro: |
Carvão; Gramínea. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02437naa a2200253 a 4500 001 2126664 005 2020-11-17 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s11356-020-08617-3$2DOI 100 1 $aCIMIRRO, N. F. G. M. 245 $aRemoval of pharmaceutical compounds from aqueous solution by novel activated carbon synthesized from lovegrass (Poaceae).$h[electronic resource] 260 $c2020 520 $aIn this work, lovegrass (Cpa), an abundant grass of the Poaceae family, was employed as feedstock for the production of activated carbon in a conventional furnace using ZnCl2 as a chemical activator. The prepared material (Cpa-AC) was characterized by pH of the point of zero charges (pHpzc), Boehm?s titration method, CHN/O elemental analysis, ATR-FTIR,N2 adsorption/ desorption curves, and SEM. This carbon material was used for adsorption of acetylsalicylic acid (ASA) and sodium diclofenac (DFC). FTIR analysis identified the presence of O-H, N-H, O-C=O), C-O, and aromatic ring bulk and surface of (Cpa-AC) adsorbent. The quantification of the surface functional groups showed the presence of a large amount of acidic functional groups on the surface of the carbon material. The isotherms of adsorption and desorption of N2 confirm that the Cpa-AC adsorbent is mesopore material with a large surface area of 1040 m2 g−1. SEM results showed that the surface of Cpa-AC is rugous. The kinetic study indicates that the system followed the pseudo-second-order model (pH 4.0). The equilibrium time was achieved at 45 (ASA) and 60 min (DCF). The Liu isotherm model best fitted the experimental data. The maxima sorption capacities (Qmax) for ASA and DFC at 25 °C were 221.7 mg g−1 and 312.4 mg g−1, respectively. The primary mechanism of ASA and DFC adsorption was justified considering electrostatic interactions and π-π interactions between the Cpa-AC and the adsorbate from the solution. Keywords Lovegrass . Conventional pyrolysis . Activated carbon . Pharmaceuticals contaminants . Adsorption 650 $aCarvão 650 $aGramínea 700 1 $aLIMA, E. C. 700 1 $aCUNHA, M. R. 700 1 $aDIAS, S. L. P. 700 1 $aTHUE, P. S. 700 1 $aMAZZOCATO, A. C. 700 1 $aDOTTO, G. L. 700 1 $aGELESKY, M. A. 700 1 $aPAVAN, F. A. 773 $tEnvironmental Science and Pollution Research$gv. 27, n. 17, p. 21442-21454, June 2020.
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Embrapa Pecuária Sul (CPPSUL) |
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Registro Completo
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
03/04/2008 |
Data da última atualização: |
04/03/2010 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
REIS. A. |
Afiliação: |
Ailton Reis, Embrapa Hortaliças. |
Título: |
Oído das cucurbitáceas. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Brasília, DF: Embrapa Hortaliças, 2007. |
Páginas: |
5 p. |
Série: |
(Embrapa Hortaliças. Comunicado Técnico, 42). |
Idioma: |
Português |
Palavras-Chave: |
Controle; Cucurbitácea. |
Thesagro: |
Doença; Epidemiologia; Erysiphe Cichoracearum; Fungo; Oídio; Sintoma. |
Thesaurus NAL: |
Sphaerotheca fuliginea. |
Categoria do assunto: |
-- |
URL: |
https://www.infoteca.cnptia.embrapa.br/infoteca/bitstream/doc/781610/1/cot42.pdf
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Marc: |
LEADER 00587nam a2200229 a 4500 001 1781610 005 2010-03-04 008 2007 bl uuuu u0uu1 u #d 100 1 $aREIS. A. 245 $aOído das cucurbitáceas. 260 $aBrasília, DF: Embrapa Hortaliças$c2007 300 $a5 p. 490 $a(Embrapa Hortaliças. Comunicado Técnico, 42). 650 $aSphaerotheca fuliginea 650 $aDoença 650 $aEpidemiologia 650 $aErysiphe Cichoracearum 650 $aFungo 650 $aOídio 650 $aSintoma 653 $aControle 653 $aCucurbitácea
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