Adsorption Behaviors of Oxytetracycline on Synthetic Resins

Meng Qiao Wang; Xiao Han Liu; Liu Yan Wu; Ai Min Li

doi:10.4028/www.scientific.net/AMR.726-731.573

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Adsorption Behaviors of Oxytetracycline on Synthetic Resins

Abstract:

Three commercial resins (NDA150, NDA88 and NDA77) with different physicochemical properties were selected to investigate the adsorption behavior and primary factors controlling the adsorption of oxytetracycline (OTC) onto the resins. The adsorption kinetics of OTC onto all resins were fitted well to pseudo-second-order model. NDA150 had the largest adsorption capacity due to its higher surface area and larger total pore volume. Moreover, all of the three resins exhibited nearly the same equilibrium time because of their nearly the same particle size. The suitable pH for the effective adsorption of NDA150 and NDA77 is from 4 to 7, while the ideal pH for NDA88 is 10. OTC adsorption on all of the three resins increased with the increasing ionic concentration.