Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 275, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2021.125135
Keywords
Hydroxyapatite; Nanocrystalline cellulose; NCC; HAP composites; Chlortetracycline hydrochloride; Adsorption mechanism
Categories
Funding
- National Nature Science Foundation of China [21766016, 21566014, 51364023]
- China Postdoctoral Science Foundation [2019M653845XB]
- Talent Reserve Project in Yunnan [2015HB014]
- Yunnan Ten Thousand Talents Plan Young & Elite Talents Project [YNWR-QNBJ-2018-198]
- Yunnan Province Postdoctoral Orientation Training Research Fellowship
- Yunnan Province Postdoctoral Research Funding [109820190046]
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This article investigates the possibility of using NCC/HAP composites as adsorbents to remove CTC·HCl from water. The experiments showed high removal rates and synergistic effects of NCC and HAP on CTC·HCl adsorption. The study suggests that NCC/HAP has promising applicability for environmental remediation of antibiotics in aqueous media.
The presence of antibiotics in the water has potential impacts on the environment and consequently their removal is of great importance. In this article the possibility of chlortetracycline hydrochloride (CTC center dot HCl) removal from aqueous medium by using eco-friendly nanocrystalline cellulose-hydroxyapatite composites (NCC/ HAPs) as adsorbents is reported. The NCC/HAPs were synthesized by a simple in-situ precipitation method and their structural properties were studied. The HAP nanoparticles were successfully incorporated on the surfaces of synthesized NCC/HAPs. A set of systematically designed experiments were carried out to determine the influences of the amount of NCC, pH, contact time, initial concentration, and adsorbent dosage on the adsorption behavior of NCC/HAPs. A high CTC center dot HCl removal rate of about 70.81% in 10 min was obtained, and NCC and HAP showed obviously synergistic effect on absorbing CTC center dot HCl. The structure analysis, kinetics, mechanistic studies, intraparticle diffusion model and Zeta potential tests demonstrated that the removal of CTC center dot HCl from aqueous media are attributed to van der Waals interaction, electrostatic interactions, cation-exchange, complexation and bridging, complexation and hydrogen bonding. Overall, the findings presented in this paper suggest that NCC/HAP has promising applicability for the removal of antibiotics from aqueous media as an alternative and eco-friendly adsorbent for environmental remediation.
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