Department of Chemical Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
Department of Chemical Engineering, King Saud University, Riyadh 11421, Saudi Arabia.
Int J Biol Macromol. 2024 Nov;279(Pt 2):135558. doi: 10.1016/j.ijbiomac.2024.135558. Epub 2024 Sep 30.
In Saudi Arabia, date palm biomass is often considered bulk waste, posing health risks to humans and the environment when incinerated or disposed of in landfills. This study explores the reuse of date palm biomass through cellulose extraction using Natural Deep Eutectic Solvent (NaDES) and Microwave-assisted process as compared with conventional alkali peroxide method. Characterization of the extracted cellulose was conducted using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), x-ray diffractometry (XRD), and fourier-transform infrared spectroscopy (FTIR). Our NaDES-microwave method produced a cellulosic product with a yield of 89 %, double that of conventional non-microwave methods and more rapid cellulosic extraction, indicating its favorable efficiency. Moreover, the incorporation of the microwave process resulted in larger cellulosic crystallite sizes and higher thermal stabilities in the produced samples. The utilization of NaDES and microwave-assisted process for cellulose extraction from date palm biomass not only demonstrates superior efficiency, but also accentuates a significant sustainability advantage by repurposing a prevalent waste stream, thereby mitigating environmental and health risks associated with traditional disposal methods.
在沙特阿拉伯，椰枣生物质通常被视为块状废物，在焚烧或填埋时会对人类和环境造成健康风险。本研究通过使用天然深共熔溶剂 (NaDES) 和微波辅助工艺从椰枣生物质中提取纤维素，并与传统的过氧氢碱法进行比较，探索了椰枣生物质的再利用。使用扫描电子显微镜 (SEM)、热重分析 (TGA)、差示扫描量热法 (DSC)、X 射线衍射 (XRD) 和傅里叶变换红外光谱 (FTIR) 对提取的纤维素进行了表征。我们的 NaDES-微波方法生产出的纤维素产品的得率为 89%，是传统非微波方法的两倍，且纤维素提取更快，表明其具有良好的效率。此外，微波工艺的加入导致所生产样品的纤维素微晶尺寸更大，热稳定性更高。利用 NaDES 和微波辅助工艺从椰枣生物质中提取纤维素不仅展示了优越的效率，而且通过重新利用普遍存在的废物流，强调了显著的可持续性优势，从而减轻了与传统处理方法相关的环境和健康风险。
