Facile synthesis and low concentration tylosin adsorption performance of chitosan/cellulose nanocomposite microspheres

Xiaogang Luo; Liming Liu; Langrun Wang; Xiaoteng Liu; Yixin Cai

doi:10.1016/j.carbpol.2018.11.009

Facile synthesis and low concentration tylosin adsorption performance of chitosan/cellulose nanocomposite microspheres

Carbohydr Polym. 2019 Feb 15:206:633-640. doi: 10.1016/j.carbpol.2018.11.009. Epub 2018 Nov 15.

Authors

Xiaogang Luo¹, Liming Liu², Langrun Wang², Xiaoteng Liu², Yixin Cai²

Affiliations

¹ School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430073, China. Electronic address: xgluo@wit.edu.cn.
² School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430073, China.

PMID: 30553367
DOI: 10.1016/j.carbpol.2018.11.009

Abstract

Antibiotic pollution in tap water, surface water, and effluent needs to be controlled in China. Adsorption is an economical and eco-friendly way to solve the antibiotic contamination problem, such as tylosin. In this study, the chitosan/cellulose nanocomposite adsorbents entrapped with activated carbon are prepared by a sol-gel phase inversion method. Structures and properties of the adsorbents are characterized by SEM, EDXS, BET, XRD, FTIR XPS and Zeta potentials. The adsorption behavior of CCM-AC on tylosin is determined by batch and fixed-bed adsorption experiments, while their adsorption mechanism is also studied. The maximum adsorption capacity is 59.26 mg g^-1, while the adsorption behavior is in accordance with the Langmuir equation and pseudo-second-order kinetics. These results confirm that the tylosin adsorption process is affected by chemical and physical interactions, and the adsorbent can be captured by tylosin with H-bond, electrostatic and π-π electron-donor-acceptor interaction. Adsorption experiments are significantly affected by pH.

Keywords: Activated carbon; Adsorption mechanism; Chitosan/cellulose nanocomposite microspheres; Column adsorption; Tylosin.