从枣树废弃物中提取红素用于结构和热应用:对性和深度欧性溶剂预处理的比较研究
Alaa A Dandash1, Joy H Tannous1,2, Basim Abu-Jdayil1,2
1Department of Chemical and Petroleum Engineering, United Arab Emirates University, Al-Ain, United Arab Emirates.
ACS omega
|December 1, 2025
概括
使用深度环氧溶剂提取棕树废物青素,为性方法提供了一个可持续的替代方案,产生高纯度,热稳定的青素. 最佳的预处理时间提高了产量和纯度,最大限度地降低了降解.
科学领域:
- 生物质的价值化 生物质的价值化
- 绿色化学 绿色化学
- 可持续材料 可持续材料
背景情况:
- 枣树废弃物质是一种未充分利用的生物资源,这给环境处置带来了挑战.
- 目前的素提取方法缺乏直接比较和对预处理参数的系统调查.
- 需要可持续的战略来将废弃生物质转化为有价值的产品.
研究的目的:
- 为了比较从枣树废物中提取红素的深度溶解剂 (DES) 和性预处理.
- 研究DES预处理时间对红素产量,纯度和特性的影响.
- 评估DES作为一种素提取方法的可持续性和效率.
主要方法:
- 使用胆化物/甲状酸深度环氧溶剂提取利格宁,预处理时间可变 (2-8小时).
- 与性预处理方法对枣树废物的比较.
- 使用FTIR,TGA,DSC,SEM,XRD,分子量和ESR.提取的红素的表征.
主要成果:
- 尽管性方法的产量更高 (36.7%),但DES红素的纯度比性红素 (27.42%) 高 (63.44%),性方法的产量更高 (36.7%).
- 在4小时的预处理中,DES木质素表现出更完整的结构,增强的热稳定性和最佳产量/纯度 (22.85%的产量,58.89%的纯度).
- 扩展的DES预处理 (8小时) 导致碎片化,分子量减少,热稳定性降低.
结论:
- 深度环氧化溶剂预处理是一种有前途的可持续替代品,可以从枣树废物中生产高纯度,热稳定的红素.
- 优化DES预处理时间对于最大限度地提高红素产量和质量至关重要.
- 这种方法解决了废物利用问题,并促进了绿色化学原则.
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