Pingdingshan University, 467000 Pingdingshan, China.
Pingdingshan University, 467000 Pingdingshan, China.
Int J Biol Macromol. 2020 Jun 1;152:449-455. doi: 10.1016/j.ijbiomac.2020.02.265. Epub 2020 Feb 26.
The supported chitosan (CS) adsorbent (FZCS) was successfully prepared by load CS on the BSCS supporter in this work. The adsorbent was characterized by elemental analysis, FT-IR, XRD, TGA, SEM and N adsorption-desorption techniques. The results showed the FZCS sorbent displayed the high removal rate (97.95%) for Titan Yellow (TY) anionic dye in aqueous solutions owing to its properties combining amino active functional amino group from the CS itself and higher specific surface area and mesoporous structure from the BSCS support. Isotherm data conform to the Langmuir isothermal model with a maximum adsorption capacity of 120.48 mg/g at 30 °C, suggesting monolayer adsorption of TY on the FZCS sorbent. The data were very well fitted to the pseudo-second-order kinetics. The adsorption capacity of FZCS could maintain about 70% after six cycles. The research indicated that FZCS would be a promising, eco-friendly and effective sorbent for anionic dye wastewater treatment in the near future.
在这项工作中，通过将壳聚糖（CS）负载在 BSCS 载体上，成功制备了负载 CS 的支持 CS 的吸附剂（FZCS）。通过元素分析、FT-IR、XRD、TGA、SEM 和 N 吸附-解吸技术对吸附剂进行了表征。结果表明，由于 FZCS 吸附剂本身具有氨基活性官能团，以及 BSCS 载体较高的比表面积和中孔结构，因此在水溶液中对阴离子染料钛黄（TY）具有很高的去除率（97.95%）。等温线数据符合朗缪尔等温模型，在 30°C 下最大吸附容量为 120.48mg/g，表明 TY 在 FZCS 吸附剂上的单层吸附。数据非常符合拟二级动力学。FZCS 的吸附容量在六次循环后可保持约 70%。研究表明，FZCS 在不久的将来有望成为一种用于处理阴离子染料废水的、有前途的、环保且有效的吸附剂。
