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Adsorption of amine and paints on H‐form resin from electrodeposition waste water
Author(s) -
Yoshida Hiroyuki,
Shimizu Kazuyuki,
Kataoka Takeshi
Publication year - 1990
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690361205
Subject(s) - adsorption , amine gas treating , chemistry , wastewater , aqueous solution , elution , ion exchange resin , chemical engineering , chromatography , organic chemistry , waste management , engineering
Wastewater of electrodeposition painting process contained diisopropanolamine, unknown three paints, and solvents (butylcellosolve and/or ethylcellosolve). The recovery of the amine and paints from the real wastewater by adsorption on an H‐form strong acid ion exchanger appeared feasible technically and economically. Equilibrium isotherms and breakthrough curves have been determined experimentally. The selectivity for the amine adsorption on the resin was fairly high. Solvents were not adsorbed on the resin. The components of the wastewater showed typical breakthrough curves for multicomponent system. Theoretical breakthrough curves and intraparticle effective diffusivities of the amine were determined from the analytic solution for rectangular isotherm in the single‐component system. Experiments of adsorption, elution and regeneration also have been repeated. The amine and paints adsorbed on the resin were eluted completely by NaOH aqueous solution. The adsorption capacity of the amine did not change with repeat times, and the intraparticle effective diffusivity of the amine was constant after the second cycle.