In a recent review article published in Communications Earth & Environment, Fanghua Li and colleagues explore the use of biochar-based catalysts (BBCs) for transforming plastic waste into fuels. The authors note the increasing urgency of finding sustainable ways to manage plastic waste, driven by the rising demand for single-use plastics. They highlight that converting plastic waste into fuels is a promising strategy that can help with both environmental and energy security.  

The review emphasizes the advantages of biochar-based catalysts, including their cost-effectiveness, porous structure, and surface functional groups, which make them effective in the catalytic conversion of plastic waste. The authors assess the practical applications of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More in catalytic pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More and advanced oxidation technologies, also considering life-cycle and techno-economic factors. The application of machine learning in designing high-performance biochar catalysts and optimizing plastic upcycling systems is also discussed.  

The accumulation of plastic waste poses a significant threat to both fresh and marine ecosystems. Plastics can persist in the environment for extended periods, harming wildlife and causing substantial environmental challenges. Microplastics, in particular, are a growing concern, as they are now found in various parts of the environment and can accumulate in living organisms.  

Current methods of plastic waste treatment, such as recycling, incineration, and landfill disposal, have limitations. These methods can be inefficient, costly, and may even lead to secondary pollution, such as the release of microplastics. Therefore, there is a need for better technologies to convert plastic waste into valuable energy resources.  

Catalytic conversion, using catalysts to break down plastic polymers, is a promising approach. Biochar, derived from biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More, is emerging as a “green” catalyst due to its low cost, sustainability, reusability, and environmental friendliness. Biochar catalysts offer a sustainable way to produce biofuels while also addressing plastic waste pollution.  

Source: Li, F., Wang, N., He, X., Deng, M., Yuan, X., Zhang, H., … & Ok, Y. S. (2025). Biochar-based catalytic upgrading of plastic waste into liquid fuels towards sustainability. Communications Earth & Environment, 6(1), 329.