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. 2021 Jun 7;9:691528. doi: 10.3389/fbioe.2021.691528

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Copyright © 2021 Fang, Wu, Shi, Tao and Yong.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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(A) Effects of different adsorbents on Congo red adsorption at different times. (B) The pseudo-first-order kinetics model curve examined. (C) The pseudo-second-order kinetics model curve examined. (D) The intraparticle diffusion model.