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Fishing net is considered as one of the biggest problem in the world owing to the release of micro-plastics from abandoned fishing nets, which contributes to marine pollution. Although disposal and recycling strategies are considered as effective methods for overcoming these problems, the pyrolysis of abandoned waste has emerged as a strategy to recover massive quantities of waste materials. In this study, to develop an effective method to valorize abandoned fishing net, the effect of the use of a CaCO3 catalyst after the loading method (i.e., in-situ and ex-situ) on pyrolytic products of abandoned fishing net was investigated using micro-gas chromatography and gas chromatography/mass spectrometry. Compared to non-catalytic pyrolysis, catalytic pyrolysis increased the yield of non-condensable and condensable gas. Particularly, the ex-situ method significantly increased the yield of non-condensable gas to up to 37.2 wt.% at 900. Compared to the ex-situ method, in-situ loading method increased the yield of condensable products to up to 82 wt.%. The understanding of the difference between different catalyst loading configurations will provide useful insight on thermocatalytic waste conversion processes.

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