An environmentally friendly process for Si recovery from end-of-life photovoltaic panels: Green swelling and mechanical crushing

IF 7.1 2区环境科学与生态学 Q1 ENGINEERING, ENVIRONMENTAL

Waste management Pub Date : 2025-09-23 DOI:10.1016/j.wasman.2025.115142

Guanghui Yan, Jialun Zhang, Siyuan Liu, Xue Song, Yingming Zhang

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Abstract

The rapid growth in the installation of photovoltaic (PV) panels has made the recycling of end-of-life PV panels an urgent concern. Mechanical crushing is a promising approach for separating various components. However, the separation of glass and silicon powder remains challenging. This paper proposes an environmentally friendly process by combining green solvent swelling and mechanical crushing for glass separation and silicon enrichment from PV panels. The ethyl acetate was successfully used to separate glass from PV panels for the first time. Complete separation of glass was achieved under the optimal conditions (60 °C, 60 min, 8 ml/g, 120 W). The PV panels without glass were then crushed mechanically under shear force. The silicon was enriched to −0.25 mm with a recovery rate of 73.30 % and purity of 88.71 %. This study provides a new option for glass and silicon recovery from waste PV panels, which shows significant potential for industrial application.

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从报废光伏板中回收硅的环保工艺：绿色膨胀和机械破碎

光伏板安装量的快速增长使得报废光伏板的回收成为一个迫切需要关注的问题。机械破碎是一种很有前途的分离各种组分的方法。然而，玻璃和硅粉的分离仍然具有挑战性。本文提出了一种绿色溶剂溶胀与机械破碎相结合的光伏板玻璃分离富硅环保工艺。乙酸乙酯首次成功地用于从光伏板中分离玻璃。在最佳条件下（60℃，60 min, 8 ml/g, 120 W），玻璃完全分离。没有玻璃的光伏板在剪切力的作用下被机械粉碎。硅富集至−0.25 mm，回收率为73.30%，纯度为88.71%。这项研究为从废弃光伏板中回收玻璃和硅提供了一种新的选择，显示出巨大的工业应用潜力。

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来源期刊

Waste management 环境科学-工程：环境

CiteScore

15.60

自引率

6.20%

发文量

492

审稿时长

39 days

期刊介绍： Waste Management is devoted to the presentation and discussion of information on solid wastes,it covers the entire lifecycle of solid. wastes. Scope: Addresses solid wastes in both industrialized and economically developing countries Covers various types of solid wastes, including: Municipal (e.g., residential, institutional, commercial, light industrial) Agricultural Special (e.g., C and D, healthcare, household hazardous wastes, sewage sludge)