LDF based parametric optimization to model fluidized bed adsorption of trichloroethylene on activated carbon particles  

作　　者：Shradha Nikam Debapriya Mandal Prasad Dabhade 

机构地区：[1]Homi Bhabha National Institute,Mumbai 400094,India [2]Alkali Material and Metal Division,Bhabha Atomic Research Centre,Mumbai 400085,India

出　　处：《Particuology》2022年第6期72-92,共21页颗粒学报（英文版）

基　　金：The authors are thankful to Shri.B.K.Chougule,Shri.M.C.Jadeja,Shri.CA.Shinde,Shri.V.D.Likhar,Shri.S.Sarang,Shri.R.Rathod,and Shri.D.Avhad for their constant supervision and assistance during the experimental studies.The authors are also thankful to Shri.S.Satre and Shri.N.Ghuge for constantly monitoring the safety aspects of the experiments.

摘　　要：Trichloroethylene(TCE)is largely used in industries as a cleaning and degreasing solvent.TCE is a potential carcinogen and is known to cause organ damage when exposed to prolonged higher concentrations.Numerical simulation of fixed and fluidized bed adsorption of TCE can help in the development of efficient adsorption processes to prevent industrial workers in the vicinity from acute TCE exposure.In the present work,a parametric optimization based numerical experimentation algorithm is implemented by open-source computational solvers to model fixed and fluidized bed adsorption of trichloroethylene vapors on activated carbon.The algorithm optimizes four parameters pertaining to linear driving force(LDF)formulation of surface barrier and microporous diffusion.The optimized parameters were utilized to evaluateζ,a dimensionless number defined as the temporal and spatial average ratio of surface barrier diffusion resistance to microporous diffusion resistance.The average value ofζis 0.139 for fixed bed operation(u/u_(mf)=0.7),1.130 for fluidized bed operation(u/u_(mf)=1),4.436 for fluidized bed operation(u/u_(mf)=1.5)and 6.317 for fluidized bed operation(u/u_(mf)=2).Therefore,the dimensionless numberζmay serve to predict the extent of change in amount adsorbed per unit adsorbent mass with change in fluidization velocity.

关 键 词：FLUIDIZATION ADSORPTION Linear driving force Parameter optimization TRICHLOROETHYLENE Activated carbon 

分 类 号：O64[理学—物理化学]