title: Extraction of dye from aqueous solution in rotating packed bed.
abstract: The influence of centrifugal acceleration on mass transfer rates in liquid-liquid extraction was investigated experimentally in rotating packed bed (RPB) contactor. The extraction of methyl red using xylene was studied in the equipment. The effect of rotational speed (300-900rpm), flow rate of the aqueous (4.17-20.8×10(-6)m(3)/s), and organic phase (0.83-2.5×10(-6)m(3)/s) on the mass transfer performance was examined. The maximum stage efficiency attained was ∼0.98 at aqueous to organic flow rate ratio of 10. The results suggest that contactor volume required to carry out a given separation can be reduced by an order of magnitude with RPB in comparison to conventional extractors.
authors.affiliation: Department of Chemical Engineering, Jadavpur University, Kolkata 700032, India.
authors.forename: Jayant B
authors.initials: JB
authors.lastname: Modak
authors.affiliation: Department of Chemical Engineering, Jadavpur University, Kolkata 700032, India. Electronic address: avijit.bhowal05@gmail.com.
authors.forename: Avijit
authors.initials: A
authors.lastname: Bhowal
authors.affiliation: Department of Chemical Engineering, Jadavpur University, Kolkata 700032, India.
authors.forename: Siddhartha
authors.initials: S
authors.lastname: Datta
keywords: Co-current; Liquid–liquid extraction; Overall volumetric mass transfer coefficient; Rotating packed bed; Stage efficiency