Sono-photocatalysis for continuous-flow intensification: A disruptive strategy for lignocellulose valorization

The valorization of lignocellulosic biomass represents a significant frontier in scientific research, promising a sustainable source of renewable energy and valuable chemical compounds. Traditional methods for converting lignocellulose often suffer from challenges such as low selectivity, suboptimal yield, and high energy consumption. To address these issues, innovative approaches that blend different catalytic processes are gaining traction. One such approach is the combination of sonication with photocatalysis in continuous-flow systems. This method offers the potential to revolutionize lignocellulose valorization by enhancing process efficiency and selectivity, thus opening new pathways for producing high-value chemicals and energy sources. This paper delves into the potential of integrating sonication and photocatalysis for lignocellulose conversion within continuous-flow systems. It discusses the opportunities that arise from this synergistic approach, as well as the associated challenges, such as the need for precise control of reaction conditions and the integration of scalable technologies. Moreover, a critical review of the current state of the art in this domain is provided to highlight recent advancements and identify avenues for future exploration. This paper is particularly relevant to researchers, engineers, and professionals in chemical engineering, renewable energy, and environmental science who are focused on sustainable technologies and biomass conversion. It is also valuable for academic and industrial stakeholders seeking innovative solutions to enhance the efficiency and sustainability of biomass processing. © 2024 The Authors. Published by Elsevier B.V.