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%.

Zinc peroxide (ZnO2 ) nanoparticles were synthesized by sol-gel method and characterized structurally and morphologically. The synthesized nanoparticles were suspended in aqueous medium to functionalize cotton textile fabrics, getting textiles with antimicrobial properties. The functionalization was by impregnation process over dry woven, making use of equipment called impregnation Padder. The impregnated textile samples were microbiologically analyzed against Pseudomonas aeruginosa (ATCC 10145) and Escherichia coli (ATCC 25922) strains. Subsequently, fastness control, physical properties studies and color control analysis were performed over the textiles. We concluded that the textiles functionalized with ZnO2 nanoparticles have antimicrobial properties, moreover, physical properties and textile fastness are not affected after the functionalization process.