超声波强化活性炭颗粒吸附2,3-DCB的研究  

Ultrasound-enhanced adsorptive removal of 2,3-DCB by granular activated carbon

作　　者：赵德明[1] 解帅[1] 毕柳[1] 蒋军荣[2] 吴纯鑫[1] 

机构地区：[1]浙江工业大学化学工程学院,浙江杭州310014 [2]台州职业技术学院生物与化工学院,浙江台州318000

出　　处：《浙江工业大学学报》2016年第2期154-158,共5页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(LY15B070005);浙江省科技厅公益技术研究社会发展项目(2015C33233)

摘　　要：研究了40kHz超声波强化活性炭颗粒(GAC)吸附水溶液中2,3-二氯联苯(2,3-DCB)的动力学,采用Langmuir,Freundilich和BET三种吸附等温线模型对有无超声波强化作用下GAC对2,3-DCB吸附进行拟合,证实GAC吸附2,3-DCB符合BET等温吸附模型,单层最大吸附容量q_m^(US)>q_m^(No US);在有无超声波辐照下且2,3-DCB初始质量浓度为5mg/L时,GAC吸附均符合拟二级动力学关系,起始吸附速率和平衡吸附容量分别为h^(US)>h^(No US)和q_e^(US)≈q_e^(No US);40kHz超声波强化GAC吸附2,3-DCB动力学常数增强因子为25.4.The sorption of 2,3-dichlorodiphenyl（2,3-DCB）from deionized water by granular activated carbon（GAC）was investigated in the absence and presence of 40 KHz ultrasonic irradiation respectively.The equilibrium adsorption isotherms were well described by the BET multilayer absorption isotherm and maximum monolayer sorption capacities were in order of qm^（US〉）qm^（No US）.In all cases,the adsorption kinetics were found to be well-represented by apseudosecond-order model,with equilibrium sorption capacity and initial sorption rate values following the orders q_e^（US）≈q_e^（No US） and hUS〉hNo US,respectively.Ultrasonic irradiation significantly increased the sorption kinetic constants of 2,3-DCB-GAC,by a factor of 25.4.

关 键 词：超声波 2 3-二氯联苯 活性炭颗粒 吸附动力学 

分 类 号：X78[环境科学与工程—环境工程] TQ209[化学工程—有机化工]