Efficient removal of toxic azo dyes from contaminated water by adsorption on the GO surface (original) (raw)
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In this study , Copper oxide as a good and inexpensive adsorbent has been introduced and used for the removal of erythrosine and red carmoisine dyes from several water solutions successfully. The effect of various parameters such as pH, dye concentration, amount of adsorbent, contact time and temperature on removal processing was investigated. Adsorption isothermal data could be interpreted by the Langmuir and Freundlich, isotherm models. Keyword: Copper oxide, Erythrosine, Red carmoisine, Absorption. Introduction Dyes from the effluent of textile, paper, leather, food, cosmetic, plastic and pharmaceutical industries, are the major source of water contamination [1]. Over 10000 dyes with an annual world wide production of over 7×10 tons are commercially available, about 50% of which are azo dyes and 10-15% of dyes produced world wide has been reported to be discharged in to the water streams[2]. These dyes are not only aesthetically displeasing, also, reduces light penetration and hi...
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