Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water
The fly ash of coal, generated in a thermoelectric plant, was used to synthesize zeolite by hydrothermal treatment with a sodium hydroxide solution. The zeolite synthesized was used as an adsorbent of metals (Fe and Mn) and of the methylene blue dye in water. The characterization of the zeolite show...
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Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)
2018-08-01
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| Series: | Revista Ambiente & Água |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2018000400306&lng=pt&nrm=iso&tlng=en |
| _version_ | 1818391813187174400 |
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| author | Jair Juarez João Walter Satiro Júnior José Luiz Vieira |
| author_facet | Jair Juarez João Walter Satiro Júnior José Luiz Vieira |
| author_sort | Jair Juarez João |
| collection | DOAJ |
| description | The fly ash of coal, generated in a thermoelectric plant, was used to synthesize zeolite by hydrothermal treatment with a sodium hydroxide solution. The zeolite synthesized was used as an adsorbent of metals (Fe and Mn) and of the methylene blue dye in water. The characterization of the zeolite showed that silicon oxide is the main compound in its composition, followed by aluminum, iron, sodium and calcium, which together correspond to more than 86% of its composition. These were used to investigate the kinetic parameters of adsorption and the isotherm of the metals and the methylene blue dye in aqueous solutions. Three kinetic models, pseudo-first order, pseudo-second order and intraparticle diffusion were used to predict adsorption rate constants. The adsorption kinetics of the dye and metals followed the pseudo-second order kinetics and reached equilibrium in 15 minutes with a 99% removal rate for metals, independently of the pH. The values of the diffusion constants (K2) for iron in pH 5, 7 and 8 were 1.3158; 1.3881 e 0.6053 mg.g-1.min-1 and for manganese 1.2511; 1.5239 and 1.4336 mg.g-1.min-1, respectively. For methylene blue, the removal rate was 90% and the constant (K2) value was 0.5437 mg.g-1.min-1. The studies showed the existence of different stages in the adsorption of the metals and the methylene blue dye in zeolite. |
| first_indexed | 2024-12-14T05:19:29Z |
| format | Article |
| id | doaj.art-7f18eb5442d54fd5b869d8725279d455 |
| institution | Directory Open Access Journal |
| issn | 1980-993X |
| language | English |
| last_indexed | 2024-12-14T05:19:29Z |
| publishDate | 2018-08-01 |
| publisher | Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi) |
| record_format | Article |
| series | Revista Ambiente & Água |
| spelling | doaj.art-7f18eb5442d54fd5b869d8725279d4552022-12-21T23:15:42ZengInstituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHi)Revista Ambiente & Água1980-993X2018-08-0113411810.4136/ambi-agua.2224Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in waterJair Juarez João0Walter Satiro Júnior1José Luiz Vieira2Universidade do Sul de Santa Catarina (UNISUL), Tubarão, SC, Brasil Mestrado em Ciências Ambientais. Universidade do Sul de Santa Catarina (UNISUL), Tubarão, SC, Brasil Departamento de Engenharia Química (EQM). Universidade do Sul de Santa Catarina (UNISUL), Tubarão, SC, Brasil Departamento de Engenharia Química (EQM). The fly ash of coal, generated in a thermoelectric plant, was used to synthesize zeolite by hydrothermal treatment with a sodium hydroxide solution. The zeolite synthesized was used as an adsorbent of metals (Fe and Mn) and of the methylene blue dye in water. The characterization of the zeolite showed that silicon oxide is the main compound in its composition, followed by aluminum, iron, sodium and calcium, which together correspond to more than 86% of its composition. These were used to investigate the kinetic parameters of adsorption and the isotherm of the metals and the methylene blue dye in aqueous solutions. Three kinetic models, pseudo-first order, pseudo-second order and intraparticle diffusion were used to predict adsorption rate constants. The adsorption kinetics of the dye and metals followed the pseudo-second order kinetics and reached equilibrium in 15 minutes with a 99% removal rate for metals, independently of the pH. The values of the diffusion constants (K2) for iron in pH 5, 7 and 8 were 1.3158; 1.3881 e 0.6053 mg.g-1.min-1 and for manganese 1.2511; 1.5239 and 1.4336 mg.g-1.min-1, respectively. For methylene blue, the removal rate was 90% and the constant (K2) value was 0.5437 mg.g-1.min-1. The studies showed the existence of different stages in the adsorption of the metals and the methylene blue dye in zeolite.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2018000400306&lng=pt&nrm=iso&tlng=encoal asheswater purificationzeolite |
| spellingShingle | Jair Juarez João Walter Satiro Júnior José Luiz Vieira Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water Revista Ambiente & Água coal ashes water purification zeolite |
| title | Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water |
| title_full | Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water |
| title_fullStr | Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water |
| title_full_unstemmed | Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water |
| title_short | Use of zeolite synthesized from coal ashl from Santa Catarina for removal of iron, manganese and methylene blue dye in water |
| title_sort | use of zeolite synthesized from coal ashl from santa catarina for removal of iron manganese and methylene blue dye in water |
| topic | coal ashes water purification zeolite |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2018000400306&lng=pt&nrm=iso&tlng=en |
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