Optimization of modification conditions of coal fly ash and its effect on adsorption performance of basic green
Using coal fly ash(CFA)as raw material,six kinds of modified coal fly ash(MCFA)with different morphology and specific surface area were prepared by controlling the order of modifier addition and the amount of modifier.The structure of MCFA was char-acterized by SEM,BET,EDS and XRD.The prepared basic green(BG)dye solution was used to simulate the dye wastewater,and the optimum modification process conditions were determined by the influence of BG dye removal rate.The results showed that the acid-base two-step modification method had the most significant effect on the adsorption efficiency of CFA,and the removal rate of BG dye increased from 61.48％ to 97.92％,the adsorption ca-pacity increased from 61.48 mg/g to 97.92 mg/g.The change of morphology showed the im-provement of adsorption capacity.
inorganic non-metallic materialsmodification of coal fly ashadsorptiondye wastewaterbasic green
万方数据
维普
