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Enhanced Adsorption of Methylene Blue by Chemically Modified Materials Derived from Phragmites australis Stems.
Nguyet, Bui Thi Minh; Nghi, Nguyen Huu; Tien, Nguyen Anh; Khieu, Dinh Quang; Duc, Ha Danh; Hung, Nguyen Van.
Afiliación
  • Nguyet BTM; Dong Thap University, Cao Lanh City, 81000, Vietnam. btmnguyet@dthu.edu.vn.
Acta Chim Slov ; 0(0): 7567, 2022 Sep 08.
Article en En | MEDLINE | ID: mdl-36196799
In this study, the biomass of Phragmites australis was chemically modified using NaOH and subsequently citric acid to produce an effective adsorbent named SA-RPB. The absorbent was characterized using XRD, SEM, BET, and FT-IR methods. The study's findings indicated that the adsorbent existed mainly as cellulose crystals, contained micropores with an average diameter of 15.97 nm, and had a large number of hydroxyl and carboxyl groups on the surface. The adsorption process of SA-RPB was evaluated through the adsorption of methylene blue (MB) dye in aqueous solution. Adsorption kinetics showed that the pseudo-second-order model well described the adsorption process. The adsorption isotherm process satisfactorily fitted with the Langmuir model with the maximum adsorption capacity of 191.49 mg/g at 303 K. These findings show that MB may be efficiently removed from aqueous solutions using the adsorbent made from the raw biomass of Phragmites australis treated with NaOH and then citric acid.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Azul de Metileno Tipo de estudio: Prognostic_studies Idioma: En Revista: Acta Chim Slov Año: 2022 Tipo del documento: Article País de afiliación: Vietnam Pais de publicación: Eslovenia

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Azul de Metileno Tipo de estudio: Prognostic_studies Idioma: En Revista: Acta Chim Slov Año: 2022 Tipo del documento: Article País de afiliación: Vietnam Pais de publicación: Eslovenia