Abstract
Recovery of precious and valuable metals from WPCBs faces challenge due to heterogeneous mixture of organic substrates and metal sheets. Pyrolysis is a promising and effective method for easing the separation of metals and organic substrates in WPCBs by transforming the organic substrates into high calorific products of oil and gases. In this study, the pyrolysis of WPCBs has been examined while investigating the effect of parameters, such as temperature, heating rate, and N2 flow rate. The pyrolysis process was optimized using response surface methodology with a central composite design (CCD). The results showed that a quadratic model explained adequately the nonlinear behavior of the modeled response with an \({R}^{2}\) value of 0.98, showing that the model was adequately adjusted to the experimental data. The effect of each parameter and their interaction were discussed, and a variety of methodologies (metal analysis by ICP, XRD, SEM, and FTIR) were used to characterize the solid pyrolized WPCBs.
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© 2023 The Minerals, Metals & Materials Society
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Kurniawan, K., Kim, S., Lee, Jc. (2023). Pyrolysis of Waste Printed Circuit Boards: Optimization Using Response Surface Methodology and Characterization of Solid Product. In: Ouchi, T., et al. Rare Metal Technology 2023. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22761-5_23
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DOI: https://doi.org/10.1007/978-3-031-22761-5_23
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