Waste tyre gasification Processes: A bibliometric Analysis and comprehensive review

Waste tyres are a significant environmental problem due to their large volume and the difficulty of disposing of them safely. Waste tyre gasification is one of the key thermochemical routes for converting waste tyres into valuable products such as gaseous fuels and/or solid fuels. In this review, a bibliometric analysis of all works on waste tyre gasification from its onset was investigated. We provide an overview of the current state of the art in waste tyre gasification processes, including the types of reactors, gasification modes, and gasification products. The modelling aspect of waste tyre gasification was also investigated as well as its shortcomings. We also discuss the challenges and opportunities associated with the co-production of gaseous products (syngas and hydrogen) and solid carbon products, polygeneration of multiple products, and identify areas for further research. Our review demonstrates that gasification of waste tyres is a viable option for the production of energy and valuable by-products, but more research is needed to optimize the process and improve its economic feasibility. More research is also required in modelling and optimization of other products such as carbon nanomaterials. In addition, the investigation of the life cycle assessment (LCA) of waste tyre gasification is vital as this can ease the adoption of waste tyre gasification technology in developing nations.