木材废弃物利用:以乙醇为基础的有机溶剂作为一个有前途的回收过程
Aron Pazzaglia1, Mattia Gelosia1, Tommaso Giannoni1
1CIRIAF, Interuniversity Research Centre on Pollution and Environment "M.Felli", University of Perugia, Via G.Duranti 67, 06125 Perugia, Italy.
Waste management (New York, N.Y.)
|August 8, 2023
概括
这项研究优化了木材废弃物的有机溶液处理,以制造用于容器板生产的高质量的纤维素纸. 该过程有效地回收乙醇和红素,表明了回收和造纸工业共生的潜力.
科学领域:
- 可持续材料科学科学 可持续材料科学
- 化学工程是化学工程的重要组成部分.
- 生物质的价值化 生物质的价值化
背景情况:
- 木材废弃物是一种未充分利用的资源,具有增值产品的潜力.
- 目前欧洲的木材废弃物管理主要涉及回收成木板或焚烧.
- 机体溶液处理提供了一种途径,可以从木材废物中提取有价值的成分,如纤维素.
研究的目的:
- 优化用于纤维素纸生产的木材废弃物的有机溶液处理.
- 使用实验设计来确定最佳条件 (温度,酸度,乙醇度).
- 评估生产容器板级纸和回收副产品的可行性.
主要方法:
- 使用微波加热对木材废弃物进行有机溶液处理.
- 设计实验 (DOE) 以优化过程变量.
- 分析纤维素含量,纤维素回收,红素沉和糖产量.
主要成果:
- 经过优化器官溶液处理,果产生了76%的纤维素含量,保留了93%的初始纤维素.
- 该工艺实现了62%的素沉,并回收了20g/l的半纤维素衍生糖.
- 在不同时间采集的样本中观察到高可重现性,通过ANOVA证实了这一点.
- 该工艺适用于回收中心和造纸厂之间的工业共生.
结论:
- 优化的有机溶解工艺有效地将木材废物转化为容器纸板的高纯度纤维素纸.
- 乙醇和红素的高效回收,以及糖生产,提高了经济可行性.
- 该过程的可重复性支持其在工业规模应用和循环经济倡议方面的潜力.
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