Recent Developments in Biomass-Derived Hydrochar Patents for Enhanced Environmental Applications

Abstract Growing environmental concerns have spurred extensive research and innovation in sustainable materials. Hydrochar, produced from biomass through hydrothermal carbonization, has emerged as a versatile solution with potential for various environmental applications. This study examines the role, challenges, and global research perspectives on hydrochar patents derived from biomass. Despite increasing interest, significant knowledge gaps remain in understanding the full landscape and impact of hydrochar patents. We analysed 211 patent documents and 116 simple families, primarily within the Chemistry and metallurgy categories, sourced from lens.org. Our findings reveal that hydrochar patent activity is concentrated in four key regions: The United States, WIPO, China, and Europe. These patents showcase innovations in hydrochar production techniques, applications, and environmental benefits. Several notable trends and challenges emerged. First, there is considerable focus on enhancing the efficiency and scalability of hydrochar production from diverse biomass sources. Second, hydrochar’s multifunctional applications are emphasized, spanning soil enhancement, water purification, and renewable energy. However, challenges remain regarding the economic viability and standardization of hydrochar production and application processes. This research offers a comprehensive analysis of the current patent landscape, providing insights into global efforts and advancements in biomass-derived hydrochar technologies. It underscores the need for continued innovation and collaboration to address current limitations. Future research should aim to optimize production techniques, reduce costs, and explore new applications, ultimately enhancing the sustainability and environmental impact of hydrochar technologies.