研究目的
Investigating the liberation and separation of valuable materials from end-of-life photovoltaic modules for recycling.
研究成果
The study demonstrated a low-cost approach to separate and concentrate EOL PV module components, achieving a Si wafer grade of 86% and a recovery of 88%. The temperature swing method using liquid nitrogen was faster and did not require chemical reagents.
研究不足
The study did not fully explore the temperature liberation rate for the unliberated PV materials. The safety precautions and toxicity of using toluene were noted as potential drawbacks.
1：Experimental Design and Method Selection:
The study focused on the liberation and separation of materials from EOL PV modules using temperature swings and particle shape.
2：Sample Selection and Data Sources:
Crystalline silicon modules were selected for evaluation.
3：List of Experimental Equipment and Materials:
A shredder system, liquid nitrogen, toluene, a tube furnace, and custom slotted sieves were used.
4：Experimental Procedures and Operational Workflow:
The backing material was removed by submersion in liquid nitrogen, the encapsulant was removed by pyrolysis, and separation was achieved using particle size and shape with mechanical screening.
5：Data Analysis Methods:
The composition of each size range was analyzed to determine the grade and recovery of Si particles.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
