研究目的
To evaluate the leaching toxicity of discarded lead-based perovskite solar cells (PSCs) and summarize the potential toxicity of different substances in PSCs.
研究成果
Discarded PSCs can easily release Pb and other toxic substances into the environment, exceeding hazardous waste limits. Organic substances from PSCs can increase oxygen consumption and release CO2. Pretreatment of discarded PSCs is necessary for environmental protection.
研究不足
The study was limited by the small amount and limited types of discarded PSCs collected, which may not fully represent all PSCs in the environment.
1：Experimental Design and Method Selection:
Dynamic leaching tests (DLTs) were employed to simulate the leaching behavior of toxic substances under different scenarios using three different extraction fluids: toxicity characteristic leaching procedure (TCLP), synthetic precipitation leaching procedure (SPLP), and water extraction test (WLT).
2：Sample Selection and Data Sources:
Discarded PSCs were used as prepared without crushing to simulate real-world disposal scenarios.
3：List of Experimental Equipment and Materials:
SEM for imaging, XRD for analysis, and Thermo Fisher iCAP Q for heavy metal analysis.
4：Experimental Procedures and Operational Workflow:
PSCs were submerged in extraction fluids at designed liquid-to-solid ratios, agitated, and filtered. The process was repeated for multiple cycles.
5：Data Analysis Methods:
Concentrations of Ni, Pb, and Zn in leachates were analyzed, along with total organic carbon (TOC) and chemical oxygen demand (COD).
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