Abstract
We have investigated the regeneration dynamics of weakly basic polyacrylic anion exchangers Amberlite IRA-67 and Lewatit VP.OC.1072 in the sulfuric form by sodium hydroxide within a wide range of passing velocities of the regeneration solution. It has been found that the regeneration rate is determined by diffusion of ions inside the sorbent granules. For two ion exchangers the regeneration process is satisfactorily described by the asymptotical solution of the system of equations of the intradiffusion model of ionic exchange dynamics. The value of the kinetic coefficient of internal mass transfer for Amberlite IRA-67 exceeds a similar parameter for Lewatit VP.OC.1072. According to the measurement data on the swelling of ion exchangers it was found that the degree of cross-linking of polymer chains in the Amberlite IRA-67 matrix is smaller than in the matrix of Lewatit VP.OC.1072. This explains the difference in the values of kinetic coefficients.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
