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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
17/11/2020 |
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Data da última atualização: |
17/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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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. |
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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. |
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Título: |
Removal of pharmaceutical compounds from aqueous solution by novel activated carbon synthesized from lovegrass (Poaceae). |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Environmental Science and Pollution Research, v. 27, n. 17, p. 21442-21454, June 2020. |
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DOI: |
https://doi.org/10.1007/s11356-020-08617-3 |
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Idioma: |
Inglês |
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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 |
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Thesagro: |
Carvão; Gramínea. |
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Categoria do assunto: |
-- |
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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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