Reductive Cellulose Aerogel as an Efficient Adsorbent for ClO3- in Drinking Water

Guifang Yang, Yuqing Zhang, Yifan Liu, Ruihan Pei, Yuancai Lv, Minghua Liu

Abstract


Cellulose aerogel adsorbent (CAA), a novel, effective, and green adsorbent, which contains tertiary amino groups, was surface modified by poly(N,N-dimethyl aminoethyl methacrylate) and sol-gel methods. It has both adsorption and reduction functions and can be utilized to remove chlorate (ClO3-) from drinking water. In the static adsorption experiments, the CAA effectively removed ClO3-, even at low initial concentrations. The adsorption kinetics showed that the adsorption equilibrium could be reached within 20 min. Additionally, the experimental data was fitted to several adsorption models, including the pseudo-first-order kinetic model, pseudo-second-order kinetic model, intra-particle reaction diffusion equation, and Langmuir and Freundlich isotherms.

Keywords


Cellulose; Aerogel; Adsorbent; ClO3-; Mechanism

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