Experimental Study on Adsorption of Ammonia Nitride and Copper Ions in Wastewater by Fly Ash-Based Zeolite
An experimental study was carried out for adsorption of ammonia nitride and copper ions in electroplating wastewater by fly ash-based zeolite.Results show that the proper conditions for adsorption of copper ions by fly ash-based zeolite include pH of 8,initial mass concentration of 200 mg/L for copper ions in the solution,adsorption time of 0.45 h,and temperature of 200 ℃;the proper conditions for adsorption of ammonia nitride by fly ash-based zeolite include addition of 8 g/L fly ash-based zeolite,pH of 8,adsorption time of 0.60 h,and initial mass concentration of 150 mg/L for ammonia nitride in the solution.It is found that the adsorption of copper ions by fly ash-based zeolites is a physical adsorption process,and the adsorption of ammonia nitride by fly ash-based zeolites is a combination of ion exchange and physical adsorption.
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维普
