الفهرس 
chapter 1Only 14 pages are availabe for public view
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Abstract
The recent study discusses the removal of orangell azo dye from aqeous solution via adsorption onto the surface of zno nanoparticles within this broad scoop the thesies focuses on synthesis and characterization of both orangeii dye and zno nanoparticles study the nature of adsorption of dye adsorbate onto the surface of nanoparticles adsorbent selection of the most appropriate kinetic and isotherm models for explanation of adsorption process determination of adsorption nature weather it was mon or multi layer physical or chemical determin of thermodynamic parameters zno nps prepared by the method of beek et al obtaining spherical particles with a diameter 4nm more information about crystal stucture shape size and optical properties were b means of several techniques such as x ray diffraction xrd un vis spectrophotometer.