TY - JOUR ID - 25199 TI - Mass Transfer Coefficients in Pulsed Column for Separation of Samarium and Gadolinium JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Torkaman, Rezvan AU - Torab-Mostaedi, Meisam AU - Safdari, Jaber AU - Moosavian, Seyed Mohammad Ali AU - Asadollahzadeh, Mehdi AD - School of Chemical Engineering, University College of Engineering, University of Tehran, Tehran, I.R. IRAN AD - Materials and Nuclear Fuel Research School, Nuclear Science & Technology Research Institute, P.O. Box 14155-1339 Tehran, I.R. IRAN Y1 - 2017 PY - 2017 VL - 36 IS - 1 SP - 145 EP - 158 KW - Mass transfer KW - Mathematical modeling KW - Solvent extraction KW - Axial Mixing KW - Pulsed column KW - Rare metals DO - 10.30492/ijcce.2017.25199 N2 - The mass transfer performance of a pulsed disc and doughnut column for extraction of samarium and gadolinium from aqueous nitrate solution with D2EHPA was investigated. The effects of operating parameters such as pulsation intensity, continuous and dispersed phase velocities on column performance were investigated. The axial dispersion model was used to obtain the overall mass transfer coefficient. The previous models for overall mass transfer coefficient were reviewed and compared with experimental data. A new correlation was derived for prediction of the overall mass transfer coefficients. The presented model was compared with the experimental results and a good agreement between them was obtained.The mass transfer experiments revealed the feasibility of operating the separation of samarium and gadolinium in the pulsed disc and doughnut columns. UR - https://ijcce.ac.ir/article_25199.html L1 - https://ijcce.ac.ir/article_25199_1d7e225a51239775bdcc98af1cd0e3a4.pdf ER -