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通过用超临界二氧化碳提取脂质来进行废米的增强微波辅助热解
Chanettee Sikhom1,2, Thomas M Attard1,3, Weerapath Winotapun4
1Green Chemistry Centre of Excellence, Department of Chemistry, University of York Heslington York YO10 5DD UK.
RSC advances
|January 4, 2024
概括
超临界的二氧化碳提取大米的收获有价值的脂质和增强微波辅助热解. 这种综合方法为废米草的价值化提供了一种可持续的方法,提高了能源效率.
科学领域:
- 生物精炼是生物精炼的一种方式.
- 绿色化学 绿色化学
- 材料科学 材料科学 材料科学
背景情况:
- 废米草是一个重大的处理挑战.
- 农业废物的回收利用对于循环经济至关重要.
- 需要可持续的开采和转化技术.
研究的目的:
- 为了研究超临界二氧化碳 (scCO2) 提取和微波辅助热解 (MAP) 的联合使用,用于米草的价值化.
- 评估scCO2提取对后续MAP工艺的影响.
- 为了描述从大米草中获得的脂性分子.
主要方法:
- 在65°C和400bar的超临界二氧化碳 (scCO2) 提取.
- 微波辅助热解 (MAP) 使用不同的颗粒大小.
- 热重力测量分析 (TG) 和衍生热重力测量分析 (DTG).
主要成果:
- scCO2提取产生了0.7%的脂性分子干重,与六提取相美.
- scCO2预处理显著增加了热解加热速率 (420K分钟-1比240K分钟-1).
- 纤维素分解发生在较低的温度 (∼120-130°C) 在MAP期间与传统的热解 (320°C) 相比.
结论:
- 结合scCO2提取和MAP是一种有效的米草增值策略.
- scCO2脱增强了微波吸收,加速了热解.
- 这种综合方法为农业废物的生物提炼提供了可持续和高效的途径.
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