| Texto completo | |
| Autor(es): |
Modesto, Helen R.
;
Lemos, Sherlan G.
;
dos Santos, Mikaela S.
;
Komatsu, Jenny S.
;
Goncalves, Maraisa
;
Carvalho, Wagner A.
;
Carrilho, Elma N. V. M.
;
Labuto, Georgia
Número total de Autores: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Environmental Science and Pollution Research; v. 28, n. 19, p. 12-pg., 2020-08-15. |
| Resumo | |
This work aims to obtain activated carbon (AC) from yeast residue to boost up bioeconomy. In this way, carbon was prepared from yeast biomass produced by the ethanol industry and after beta-glucan extraction. Carbon was activated with CO2, water vapor, and a combination of both using an experimental design. The best conditions to produce AC were activation with CO(2)for 30 min at 850 degrees C and CO(2)flow of 0.09 L/min, set by experimental design and desirability function to optimize the yield, surface area, and microporosity. Thus, for physical activation with water vapor employing the optimized conditions, it was possible to achieve a yield of 56.6% (m/m) for AC with 1144 m(2)/g of surface area and mean micropore volume of 0.53 cm(3)/g. The maximum AC surface area reached 1616 +/- 567 m(2)/g with a yield of 21 +/- 1%. The prepared ACs were characterized by elemental analysis, X-ray diffractometry, infrared spectroscopy, thermogravimetry analysis, pH(PZC), and potentiometric titration to determine the main functional groups of sorption sites. The carbon obtained from the desirability condition was used to remove dipyrone from synthetic aqueous effluent with an experimental sorption capacity of 88 +/- 4 mg/g, being the phenomenon described by the Freundlich isotherm model. (AU) | |
| Processo FAPESP: | 17/24931-4 - Catalisadores alternativos para a conversão de polióis mediante aquecimento convencional e por micro-ondas |
| Beneficiário: | Wagner Alves Carvalho |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 16/06271-4 - Desenvolvimento de materiais adsorventes a partir de resíduo de biomassa de levedura proveniente de processos fermentativos industriais para remoção de contaminantes emergentes de águas e efluentes |
| Beneficiário: | Geórgia Christina Labuto Araújo |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/13074-3 - Produção e caracterização de carvão ativado obtido a partir de resíduo de biomassa de levedura da indústria sucroalcooleira |
| Beneficiário: | Mikaela Silva dos Santos |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |