2,4-二硝基苯酚在生物炭中的吸附热力学和动力学研究  

Adsorption kinetics and thermodynamics of 2,4-DNP in biochar

作　　者：韦学玉[1,2] 徐晓平[1] 万耀强[2,3] 

机构地区：[1]安徽工程大学建筑工程学院,安徽芜湖241000 [2]河海大学,江苏南京210098 [3]南水北调中线干线工程建设管理局,河南郑州450000

出　　处：《河南科技学院学报（自然科学版）》2016年第5期63-66,共4页Journal of Henan Institute of Science and Technology(Natural Science Edition)

基　　金：2016年度安徽工程大学青年科研基金(2016YQ34);2016年度安徽省高等学校自然科学研究重点项目(KJ2016A063)

摘　　要：利用花生壳制成生物炭(BC)材料,探讨其对2,4-二硝基苯酚(2,4-DNP)吸附热力学和动力学.试验结果表明:吸附符合Langmuir吸附等温线方程,ΔH、ΔS与ΔG显示生物炭对水中2,4-DNP的吸附是自发吸热的物理过程,BC对2,4-DNP的吸附与二级动力学模型拟合度较好,吸附过程主要受快速反应控制,升高反应温度有利于BC对水2,4-DNP的吸附.A skilful method access to biochar（BC） was made by using peanut shell.The adsorption thermodynamics and kinetics of 2,4-DNP in BC were discussed.The results of experiment indicated that the adsorption isotherm data were fitted well to Langmuir isotherm.AH,AS and AG revealed that 2,4-DNP adsorption in BC was a spontaneous, exothermic and physical adsorption process.The adsorption kinetics of 2,4-DNP in BC were better fitted by pseudo- second-order kinetic model.The adsorption process was mainly controlled by the fast reaction,and the temperature was lower in reaction,which was favorable to the adsorption of 2,4-DNP.

关 键 词：花生壳 生物炭 2 4-DNP 吸附 

分 类 号：O647.3[理学—物理化学]