sorption of React ive Red ۱۹۸ from aqueous so lutions by Al۲O۳ nanoparticles; A kinetic study.

Dye is the most significant identified contamina nt amongst the various pollutants of waste waters. Man y industries, such as textile, tann ing, printing, food, cosmetics, etc . use organic compounds as dyes to color their final pr oducts. Reactive azo dyes are the most commonly applie d among m ore than ۱۰۰ ۰۰ dyes applied in text ile processing industrie. The major environme ntal problem associated with the u se of reactive dyes is their loss in the dyein g process since the fix ation efficiency ranges from ۶۰ to ۹۰% [۱]. There are s everal methods to synthe size nanopa rticles such as condensation from the gas stage, by synthesis in vacuum, highly energetic reactive milling and by precipitation from solution (hydrothermal synthe sis, sol-gel, reactions in aerosol-reactive spraying, electroc hemical synthesis, subli mated drying ) [۲, ۳]. In this work, preparation of ƴ-Al۲O۳ nanoparticl es by Sol-g el method and its capacity for the removal of re active red ۱ ۹۸ dye from aqueous solutions, was investigated .

کلیدواژه ها:

sorption ، Al۲O۳ nanoparticle ، R-R۱۹۸ ، kinetic.