A chitosan-based composite named poly(1-vinylimidazole)-chitosan (PVI-CS) was fabricated employing a microwave-assisted protocol to be used as a novel composite for CdII contaminated water. The prepared PVI-CS composite was evaluated using SEM-coupled EDX, FTIR and zeta potential analyses. Under certain experimental conditions of the batch process, the binding behavior of PVI-CS sorbent against CdII ions was investigated. Results demonstrate that the optimized experimental conditions for CdII ions removal by PVI-CS composite sorbent were to be pH 7.2, the PVI-CS dose 2.5 g/L and the CdII concentration 25 mg/L at 30 °C. The Langmuir qmax of the PVI-CS turned out to be 204.92 mg/g for CdII ions. The kinetics analysis revealed that the process was best-fitted for pseudo-first-order kinetics with R2 > 0.999. The CdII ions removal efficiency of PVI-CS sorbent remained satisfactory even after five cycles, which establish that PVI-CS is a sustainability composite for an effective water purification system.

中文翻译：

---

微波辐射下聚（1-乙烯基咪唑）-壳聚糖复合吸附剂的开发，以提高水介质中Cd（II）离子的吸收

采用微波辅助协议制造了一种名为聚（1-乙烯基咪唑）-壳聚糖（PVI-CS）的壳聚糖基复合材料，用作 CdII 污染水的新型复合材料。使用 SEM 耦合 EDX、FTIR 和 zeta 电位分析评估制备的 PVI-CS 复合材料。在间歇过程的某些实验条件下，研究了 PVI-CS 吸附剂对 CdII 离子的结合行为。结果表明，PVI-CS 复合吸附剂去除 CdII 离子的优化实验条件为 pH 7.2，PVI-CS 剂量 2.5 g/L 和 CdII 浓度 25 mg/L，30 °C。对于 CdII 离子，PVI-CS 的 Langmuir qmax 为 204.92 mg/g。动力学分析表明，该过程最适合 R2 > 0.999 的拟一级动力学。