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《Environmental Science and Management》 2011-07
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Adsorption Mechanism of Direct Red Dye by Using Fly Ash

Wu Yinhua(Yancheng Technician College Jiangsu Province,Yancheng 224002,China)  
This paper studies the behaviors and mechanisms of direct red dye adsorption on fly ash.The results show that fly ash achieved better direct red dye removal performance.When NaCl concentration was below 12.5 g/L,the increase of salinity had small influence on removal rate.The direct red removal rate increased with the increase of salinity when NaCl concentration was above 15 g/L.However,when concentration of sodium dodecyl sulfate was below 0.5 g/L,the adsorption of direct red dye on fly ash decreased with the increase of surfactant concentration.No significant effects were observed when continue to add surfactants.
【CateGory Index】: X703.5
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