改性油页岩灰渣对水中DNBP吸附去除效果  

DNBP adsorption of modified oil shale ash

作　　者：金兰淑[1] 王建国[1] 李平[1] 申龙[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁省农业资源与环境重点实验室,沈阳110866

出　　处：《环境工程学报》2013年第12期4786-4792,共7页Chinese Journal of Environmental Engineering

基　　金：辽宁省教育厅高校科研项目(2008S210)

摘　　要：采用PDMDAAC改性方法对油页岩灰渣进行改性,确定最佳改性方案,并研究了环境因素对改性油页岩灰渣吸附DNBP的影响。实验研究结果表明,油页岩灰渣经20 g/L的PDMDAAC处理时,对DNBP的吸附能力最强。在吸附温度为30℃,初始溶液pH值为4的条件下,0.3 g的改性油页岩灰渣对30.0 mg/L DNBP溶液50 mL,吸附120 min时,其吸附率达到94.48%以上。在实验条件下,改性油页岩灰渣对DNBP的吸附符合Langmuir和Freundlich等温吸附方程,相关系数分别为0.9985和0.9776,其对DNBP的理论饱和吸附量达到6.196 mg/g。改性油页岩灰渣对DNBP的吸附主要归因于离子交换和表面吸附作用。Experiments were performed by using PDMDAAC modification method to modify oil shale ash,in order to determine the optimum PDMDAAC solution. Meanwhile,the impact of environmental factors on oil shale ash DNBP adsorption was studied in this experiment. Result indicates that oil shale ash has the strongest capacity of adsorption at 20 g/L PDMDAAC treatments. The elimination rate can reach to 93.96% by adding 0.3 g modified oil shale ash to 50 mL of 30.0 mg/L DNBP solution after 120 minutes （adsorption time） at 30℃ ,initial pH 4. In this experiment,the results were correlated using Langmuir and the Freundlich isotherm formula; the correlation coefficients were 0. 9985 and 0. 9776, respectively. Moreover,the theory cadmium saturation adsorption capacity reached to 6. 196 mg/g. In short,modified oil shale ash on DNBP adsorption is mainly based on the ion exchange and the effect of surface adsorption.

关 键 词：改性油页岩灰渣 DNBP 吸附 

分 类 号：X703[环境科学与工程—环境工程]