Biosorption studies of cationic dyes Using waste cotton seeds

Abstract

newlineAn adsorbent was prepared from waste immature cotton newline Gossypium hirsutum seeds through chemical activating agent Sulphuric newlineacid and impregnation ratio of 1 4 wt were selected due to their higher newlineyield on methylene blue number 42 mg g 1 and iodine number 510 mg g 1 newlineThe prepared Immature Gossypium hirsutum Seed Activated Biomass newline IGHSAB possessed a reasonable surface area 495 963 m2 g 1 micro pore newlinevolume 0 302 cm3 g 1 and meso pore volume 0 111 cm3 g 1 The surface newlinecharge determinations using Boehm titrations pointed out that IGHSAB newlinesurface was acidic 5 37 mmol g 1 and having point of zero charge at 6 4 newlineThe FTIR spectra indicated that IGHSAB surface was developed with many newlinefunctional groups such as C O COOH OH and SO3H The X ray diffraction newlineindicated that IGHSAB was amorphous The bulk density was found to be newline0 52 g l 1 newline newline