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Study on the Removal of p-nitrophenol in Wastewater with Activated Carbon

XIE Hong-mei et al(College of Environment and Biological Engineering,Chongqing Technology and Business University,Chongqing 400067)  
P-nitrophenol has great toxicity and it is difficult for the biodegradation.It is one common organic pollutant in the wastewater from the industries of chemical industry,pesticide,dye and so on.Using activated carbon as the adsorbent,the wastewater with p-nitrophenol was treated to study the influences of adsorption time,amount of activated carbon and p-nitrophenol concentration on the removal of p-nitrophenol in wastewater were studied.The results indicated that the removal ratio of p-nitrophenol was affected by the adsorption time,amount of activated carbon and concentration obviously.For wastewater with 150 mg/L p-nitrophenol,the removal ratio of p-nitrophenol reached 99.09% when the amount of activated carbon and adsorption time was 60 mg and 150 min,respectively.The concentration of p-nitrophenol could be decreased to below 2 mg/L,which satisfied with the national first degree let out level.
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