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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
05/07/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
GIRALDI, T. R.; COSTA, B. C. da; SILVA, M. M.; SANTOS, A. L. dos; PARIS, E. C.; FIGUEIREDO, A. T. de; RODRIGUEZ, R. P. |
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Afiliação: |
ELAINE CRISTINA PARIS, CNPDIA. |
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Título: |
Nb2 O5 Pellets with Inactive Biomass for Adsorption of Mn2+ Ions: Kinetic, Isothermal and Reuse Study. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Materials Research, v. 26 (suppl. 1), e20220553, 2023. |
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Páginas: |
9 p. |
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DOI: |
https://doi.org/10.1590/1980-5373-MR-2022-0553 |
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Idioma: |
Inglês |
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Conteúdo: |
This paper aims to explore the production of porous Nb2 O5 pellets by pressing and adding anaerobic biomass (sludge) in order to evaluate the microstructure porosity. The thermal treatment temperature of the pellets varied between 300 ºC and 900 ºC. Their structural, morphological, and physical properties were measured, and the adsorption potential of Mn2+ and their reuse were evaluated. All samples had a monoclinic phase. Density average values of samples pressed using sludge ranged between 2.45 and 2.52 g.cm-3, while the one obtained without sludge pressing achieved higher values of around 2.72 g.cm-3. All samples presented high porosity values after the heat treatment (above 40%), which confirms the efficiency of sludge as a means to enhance porosity. These pellets were used for Mn2+ ions adsorption in aqueous medium. The Langmuir isotherm model was the one that achieved the best goodness-of-fit. In kinetic studies, the adsorption reaction was in accordance with second-order kinetics. Adsorbents in the form of pellets are environmentally friendly on account of their significant reuse and recycling potential. However, the particulate matter might become an environmental liability and incur high treatment costs. The samples proved to be reusable, promoting the adsorption of 67% of the Mn2+ after the fifth reuse cycle. |
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Palavras-Chave: |
Mn2+; Nb2 O5; Reuse. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154809/1/P-Nb2-pellets-with-inactive-biomass-for-adsorption.pdf
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Marc: |
LEADER 02095naa a2200253 a 4500
001 2154809
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/1980-5373-MR-2022-0553$2DOI
100 1 $aGIRALDI, T. R.
245 $aNb2 O5 Pellets with Inactive Biomass for Adsorption of Mn2+ Ions$bKinetic, Isothermal and Reuse Study.$h[electronic resource]
260 $c2023
300 $a9 p.
520 $aThis paper aims to explore the production of porous Nb2 O5 pellets by pressing and adding anaerobic biomass (sludge) in order to evaluate the microstructure porosity. The thermal treatment temperature of the pellets varied between 300 ºC and 900 ºC. Their structural, morphological, and physical properties were measured, and the adsorption potential of Mn2+ and their reuse were evaluated. All samples had a monoclinic phase. Density average values of samples pressed using sludge ranged between 2.45 and 2.52 g.cm-3, while the one obtained without sludge pressing achieved higher values of around 2.72 g.cm-3. All samples presented high porosity values after the heat treatment (above 40%), which confirms the efficiency of sludge as a means to enhance porosity. These pellets were used for Mn2+ ions adsorption in aqueous medium. The Langmuir isotherm model was the one that achieved the best goodness-of-fit. In kinetic studies, the adsorption reaction was in accordance with second-order kinetics. Adsorbents in the form of pellets are environmentally friendly on account of their significant reuse and recycling potential. However, the particulate matter might become an environmental liability and incur high treatment costs. The samples proved to be reusable, promoting the adsorption of 67% of the Mn2+ after the fifth reuse cycle.
653 $aMn2+
653 $aNb2 O5
653 $aReuse
700 1 $aCOSTA, B. C. da
700 1 $aSILVA, M. M.
700 1 $aSANTOS, A. L. dos
700 1 $aPARIS, E. C.
700 1 $aFIGUEIREDO, A. T. de
700 1 $aRODRIGUEZ, R. P.
773 $tMaterials Research$gv. 26 (suppl. 1), e20220553, 2023.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/05/2023 |
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Data da última atualização: |
18/05/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
VERGARA. C.; ARAUJO, K. E. C.; ZILLI, J. E. |
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Afiliação: |
CARLOS VERGARA TORRES JUNIOR, UFRRJ; KARLA EMANUELLE CAMPOS ARAUJO, UFRRJ; JERRI EDSON ZILLI, CNPAB. |
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Título: |
Physiological changes in tomato colonized by dark septate endophytic fungi. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Research, Society and Development, v. 12, n. 4, e28712441188, 2023. |
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ISSN: |
2525-3409 |
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DOI: |
10.33448/rsd-v12i4.41188. |
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Idioma: |
Inglês |
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Conteúdo: |
As is customary in mycorrhizae, the interaction between plant and dark septate endophytic (DSE) fungi can result in physiological changes in the host plant, which are still poorly understood. This study aimed to evaluate the physiological changes in tomato plants colonized by DSE fungi. Four DSE isolates previously identified through ITS phylogeny were inoculated on tomato seeds and compared to non-inoculated plants (control). Kinetic parameters (Vmax and Km) were calculated measuring the nitrate content in the nutrient solution. The contents of NO3--N, NH4+-N, amino-N, soluble sugars in the root, petiole, stem and leaf, and the contents of macronutrients in the shoot were determined. The plants inoculated with A101 and A105 exhibited (i) significant increases in the soluble sugar contents; (ii) increases in the contents of P, K, Mg and S; and (iii) increased dry biomass compared to control. The A103 inoculation was antagonistic when compared to the other treatments, leading to a higher influx of NO3--N in the plants, resulting in a higher amino-N and the lower soluble sugar content in the shoot. The physiological parameters of tomato varied depending on the inoculation, and the changes ranged from positive to negative depending on each isolate involved in the interaction. |
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Palavras-Chave: |
Nitrogen fraction; Root colonization; Soluble sugars. |
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Categoria do assunto: |
S Ciências Biológicas |
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Marc: |
LEADER 01914naa a2200205 a 4500
001 2153837
005 2023-05-18
008 2023 bl uuuu u00u1 u #d
022 $a2525-3409
024 7 $a10.33448/rsd-v12i4.41188.$2DOI
100 1 $aVERGARA. C.
245 $aPhysiological changes in tomato colonized by dark septate endophytic fungi.$h[electronic resource]
260 $c2023
520 $aAs is customary in mycorrhizae, the interaction between plant and dark septate endophytic (DSE) fungi can result in physiological changes in the host plant, which are still poorly understood. This study aimed to evaluate the physiological changes in tomato plants colonized by DSE fungi. Four DSE isolates previously identified through ITS phylogeny were inoculated on tomato seeds and compared to non-inoculated plants (control). Kinetic parameters (Vmax and Km) were calculated measuring the nitrate content in the nutrient solution. The contents of NO3--N, NH4+-N, amino-N, soluble sugars in the root, petiole, stem and leaf, and the contents of macronutrients in the shoot were determined. The plants inoculated with A101 and A105 exhibited (i) significant increases in the soluble sugar contents; (ii) increases in the contents of P, K, Mg and S; and (iii) increased dry biomass compared to control. The A103 inoculation was antagonistic when compared to the other treatments, leading to a higher influx of NO3--N in the plants, resulting in a higher amino-N and the lower soluble sugar content in the shoot. The physiological parameters of tomato varied depending on the inoculation, and the changes ranged from positive to negative depending on each isolate involved in the interaction.
653 $aNitrogen fraction
653 $aRoot colonization
653 $aSoluble sugars
700 1 $aARAUJO, K. E. C.
700 1 $aZILLI, J. E.
773 $tResearch, Society and Development$gv. 12, n. 4, e28712441188, 2023.
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Embrapa Agrobiologia (CNPAB) |
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