Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia.
Department of Chemistry, Syiah Kuala University, Banda Aceh, 23111, Indonesia.
Carbohydr Polym. 2017 Aug 15;170:226-233. doi: 10.1016/j.carbpol.2017.04.084. Epub 2017 Apr 30.
Chitosan composite films reinforced with cellulose isolated from oil palm empty fruit bunch had been successfully prepared and applied in cadmium ions removal from aqueous solutions. Cellulose particles were isolated by hydrolyzing oil palm empty fruit bunch with hydrochloric acid. Several compositions were prepared by varying the chitosan/cellulose ratio of composites. The structure and the properties of composites were investigated by Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD) and mechanical performance measurement. FTIR spectra confirmed that cellulose particles were incorporated into the chitosan matrix. Tensile test results showed that the contents of chitosan and cellulose influenced the mechanical properties of composites. The composite with 10wt% cellulose particles had the highest tensile strength. The X-ray diffraction patterns indicate the crystallinity index of composites decreased with addition of cellulose particles. This low crystallinity is important for metal ions removal in water treatment. Application of composite for cadmium removal from aqueous solutions was done by various solution pH, contact time and concentrations. The adsorption isotherm of Cd ions onto the composite was well fitted to Langmuir equation. Furthermore, the adsorbent still exhibited good adsorption performance after regeneration.
壳聚糖/油棕空果串纤维素复合材料的制备及其对水溶液中镉离子的吸附性能研究
壳聚糖/油棕空果串纤维素复合材料已成功制备并应用于水溶液中镉离子的去除。纤维素颗粒是通过盐酸水解油棕空果串得到的。通过改变复合材料中壳聚糖/纤维素的比例，制备了几种不同的组合物。通过傅里叶变换红外光谱（FTIR）、X 射线衍射（XRD）和力学性能测试对复合材料的结构和性能进行了研究。FTIR 光谱证实了纤维素颗粒已掺入壳聚糖基质中。拉伸试验结果表明，壳聚糖和纤维素的含量影响复合材料的力学性能。添加 10wt%纤维素颗粒的复合材料具有最高的拉伸强度。X 射线衍射图谱表明，复合材料的结晶度指数随纤维素颗粒的添加而降低。这种低结晶度对于水处理中金属离子的去除非常重要。通过改变溶液 pH 值、接触时间和浓度，对复合材料去除水溶液中镉离子的性能进行了研究。Cd 离子在复合吸附剂上的吸附等温线很好地符合朗缪尔方程。此外，该吸附剂在再生后仍表现出良好的吸附性能。
