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通过使用乙醇,绿色分离和分解晶光伏模块的背板

Pengxin Su¹, Yaqun He¹, Jie Wang¹

¹School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China.

Waste management (New York, N.Y.)

|March 12, 2024

概括

本研究介绍了一种环保方法,用于从晶光伏模块中回收化背板. 该工艺回收了甲酸,使闭环材料循环成为可能,并减少了与光伏废物相关的环境风险.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
化学工程是化学工程的重要组成部分.

背景情况:

晶光伏 (c-Si PV) 模块的回收至关重要,但化背板的处理仍然是一个挑战.
不适当地处置这些背板会给生态和人类健康带来风险.
缺乏用于c-Si光伏模块背板加工的标准化方法.

研究的目的:

开发一种新的,环保的方法,用于从c-Si光伏模块中加工化背板.
为了实现后板材料的高效分离和分解.
为了回收有价值的产品用于闭环循环回收.

主要方法:

使用的乙醇 (CH3CH2OH) 用于将背板与光伏模块分离.
使用性乙醇 (NaOH-CH3CH2OH) 溶液进行背板分解.
使用SEM/EDS,NMR,FTIR和XRD对回收产品进行了表征.

主要成果:

通过将光伏模块浸泡在75%的CH3CH2OH-H2O中,在343K的温度下,在30分钟内实现100%的背板分离.
成功地将分离的背板在NaOH-CH3CH2OH溶液 (1.0mol/L NaOH) 中在343K 60分钟内分解.
97.47%纯度的回收铁酸 (TPA),适用于生产新的背板.

结论:

开发的方法是高效的,无毒的,并使用环保的试剂.
这种方法促进了c-Si光伏模块回收中的闭环材料循环.
该方法在可持续的光伏废物管理中显示出工业应用的巨大潜力.

关键词:

性乙醇系统是一种性乙醇系统.背纸回收回收背纸回收回收晶体光伏模块晶体光伏模块的使用环境友好的处理方法

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