Abstract
As a new kind of electronic waste, waste solar cells have posed a great threat to the environment. Solar cells contain a mass of hazardous organic components, such as ethylene-vinyl acetate copolymer and polyethylene glycol terephthalate. The degradation of ethylene-vinyl acetate copolymer and polyethylene glycol terephthalate may produce toxic substances to the environment. This paper proposed molecule co-fracture to dispose the organics in order to judge the hazard of degradation products to the environment. Co-fracture kinetics analysis showed that the heating rate with highest co-fracture efficient was 30 °C/min, at which the activation energy E had the largest value of 68.84 kJ/mol. The co-fracture products under different heating rates were tested. The main product was 1-hexadecanol, 2-methyl-, which had the highest yield of 44.66 wt % at the heating rate of 25 °C/min. Diisobutyl phthalate was the main hazardous product, which had highest yield was 9.75 wt % at the heating rate of 5 °C/min. Only at the heating rate of 30 °C/min, no hazardous substance was produced. Different energy supply in the system was the main reason for the different products. Molecule co-fracture was employed in this study to dispose organics in waste solar cells, which provides guidance for the disposal of waste solar cells to avoid environmental pollution.
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