Study on the adsorption and enrichment performance of manganese ion by D001 type resin
This article investigates the adsorption and desorption properties of D001 resin on Mn2+.Static ad-sorption experiments were carried out to investigate the isothermal model and adsorption kinetics of Mn2+ ad-sorption.Dynamic adsorption experiments were conducted at different flow rates,pH values and adsorption times,and the degree of Mn2+ enrichment by the resin was also investigated by controlling the flow rate and concentration of regeneration solution,and characterization tests were carried out on the resin before and after adsorption,as well as after several adsorption-regeneration tests of the resin.The results showed that the ad-sorption of manganese was more consistent with the Langmuir isotherm than the Freundlich isotherm,and that the quasi-primary kinetic model best simulated the kinetic data of the manganese adsorption reaction.The best adsorption effect was achieved at a flow rate of 8 m/h,p H 4,and adsorption time of 270 min,and the best Mn2+ enrichment effect was achieved at a regeneration solution flow rate of 1.5 m/h and a concentration of 3 mol/L,which was 60 times that of the original sample.Finally,the adsorption mechanism of manganese bind-ing with sulfonic acid group was confirmed by FT-IR.
ion exchangekineticsdynamic adsorptionmanganese ionsenrichment
万方数据
维普
