ACTIVATED CARBONS IMPREGNATED BY CHITOSAN AND ITS COMPARISON WITH COMMERCIAL CARBONS

• Autores: Cruz Cerro, Gerardo J. F., Velásquez Yucra, Marlene, Julio Santiago Contreras, Julio Santiago Contreras, Solís Veliz, José L., Gómez León, Mónica M., Keiski, Riitta
• Formato: artículo
• Fecha de Publicación: 2016
• Institución: Sociedad Química del Perú
• Repositorio: Revista de la Sociedad Química del Perú
• Lenguaje: español
• OAI Identifier: oai:rsqp.revistas.sqperu.org.pe:article/97
• Enlace del recurso: http://revistas.sqperu.org.pe/index.php/revistasqperu/article/view/97
• Nivel de acceso: acceso abierto
• Materia: Agrowastes; activated carbon; chitosan; methylene blue; adsorption properties; Escherichia coli; Carbón activado; quitosano; propiedades adsorbentes; azul de metileno

Activated carbons were prepared from corncob and red mombin seed and impregnated with chitosan. Field Emission Scanning Microscopy (FESEM) micrographs confirm the presence of chitosan in the activated carbon surface. Adsorptive and antibacterial properties of the prepared materials were compared with two adsorbents used in commercial water filters. Equilibrium adsorption experiments showed that the materials prepared in this study had maximum adsorption capacity to methylene blue that is comparable with those of the commercial adsorbents (between 145 and 192 mg/g). Activated carbons impregnated with chitosan exhibited higher antibacterial capacity against E. coli than the commercial adsorbents. The activated carbons prepared from corncob reach levels of reduction as higher as 96,3%. Meanwhile the commercial activated carbons had reduction values lower than 60,3%.