The preparation of a novel modified chitosan: application to the removal of lead and cephalexin
Author:
Wei Bangchang1, Xu Ya1, Kong Shengnan1, Ji Zheng1, Zhang Yansong1, Wang Huchuan1, Li Chuanrun1
Affiliation:
1. Anhui University of Chinese Medicine , Hefei , China
Abstract
Abstract
As a natural, non-toxic adsorbent, chitosan is well suited for the removal of heavy metals and antibiotics. In this study, chitosan was modified with polypropylene glycol and itaconic anhydride to improve the mechanical properties of chitosan, and the polypropylene glycol-itaconic anhydride-chitosan adsorbent was successfully prepared. The adsorbent was characterised and analysed by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis and X-ray photoelectron spectroscopy (XPS). The effects of the different conditions on the adsorption of Pb2+ and cephalexin were investigated. The Langmuir adsorption isotherm model showed that the maximum adsorption capacities of Pb2+ and cephalexin could reach 431.73 mg g−1 and 153.72 mg g−1, respectively. The possible adsorption mechanism of Pb2+ and cephalexin was discussed.
Publisher
Walter de Gruyter GmbH
Subject
Condensed Matter Physics,General Chemical Engineering,General Chemistry
Reference49 articles.
1. Chen, Y. L., Jiang, C. X., Wang, Y. L., Song, R. R., Tan, Y., Yang, Y. Y., Zhang, Z. L. Sources, environmental fate, and ecological risks of antibiotics in sediments of Asia’s longest river: a whole-basin investigation. Environ. Sci. Technol. 2022, 56, 14439–14451. https://doi.org/10.1021/acs.est.2c03413. 2. Li, M., Yang, L., Yen, H., Zhao, F. K., Wang, X. M., Zhao, T. H., Feng, Q. Y., Chen, L. D. Occurrence, spatial distribution and ecological risks of antibiotics in soil in urban agglomeration. J. Environ. Sci. 2023, 125, 678–690. https://doi.org/10.1016/j.jes.2022.03.029. 3. Li, Q. H., Li, X. X., Bu, C. J., Wu, P. Distribution risk assessment, and source apportionment of heavy metal pollution in cultivated soil of a typical mining area in Southwest China. Environ. Toxicol. Chem. 2023, 42, 888–900. https://doi.org/10.1002/etc.5586. 4. Abdelhalim, A., Howard, G., Howden, N. J. K., Ahmed, M., Ismail, E. Carcinogenic and non-carcinogenic health risk assessment of heavy metals contamination in groundwater in the west of Minia area, Egypt. Hum. Ecol. Risk Assess. 2023, 29, 571–596. https://doi.org/10.1080/10807039.2022.2153010. 5. Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., Sutton, D. J. Heavy metal toxicity and the environment. Exper. Suppl. 2012, 101, 133–164. https://doi.org/10.1007/978-3-7643-8340-4_6.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|