提升纯化矿山酸盐污泥的价值,作为以乙烯-乙酸乙烯涂层纤维素基包装纸的功能填充剂
Oumaima Bendalahcen1, Siham Ez-Zahraoui1, Rachid Bouhfid2
1Materials Science, Energy and Nanoengineering Department (MSN), Mohammed VI Polytechnic University (UM6P), Lot 660 - Hay Moulay Rachid, 43150, Ben Guerir, Morocco.
International journal of biological macromolecules
|November 11, 2025
概括
这项研究将纯化酸盐污泥 (P-PS) 作为可持续纸包装的安全填充剂重新使用. 经过处理的污泥增强了纸张的颜色.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 对可持续包装的日益增长的需求推动了基于纤维的材料的创新.
- 像酸盐污泥 (P-PS) 这样的采矿副产品通常被认为是废物,这给处置带来了挑战.
- 工业副产品的价值化对于循环经济原则至关重要.
研究的目的:
- 研究净化酸盐污泥 (P-PS) 作为纤维素纸的功能填充剂的安全利用.
- 评估P-PS结合对纸张结构性,热性,机械性和疏水性质的影响.
- 展示采矿副产品的可持续废物管理解决方案.
主要方法:
- 酸盐污泥 (P-PS) 通过酸性浸,洗和化来净化,以去除有毒元素.
- 纯化P-PS (富含SiO2) 在不同度 (10-90 wt%) 中被纳入纤维素基纸.
- 乙烯-乙酸乙烯 (EVA) 涂层通过热压缩来增强表面性能和耐水性.
主要成果:
- 净化消除了高达96%的有毒元素,产生了高于85%SiO2.2%的P-PS.
- 通过结合,P-PS的结合增强了纸张的结构完整性.
- 用EVA涂层的纸张 (10-40重量%P-PS) 呈现出改善的形态,热稳定性和疏水性 (接触角度高达121°).
- 观察到硬度 (>2700 MPa),拉伸强度 (+11.78%) 和柔性 (+75.62%) 的显著改善.
结论:
- 纯化酸盐污泥 (P-PS) 是一种安全有效的功能性填充剂,用于基纸.
- 这种方法为采矿副产品提供了一个可行的废物管理途径.
- 开发的复合材料显示了适合包装应用的增强性能.
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