Promoting sustainable agriculture through circular hydrogen production, storage and utilization

The current dependence on fossil fuels has led to excessive resource depletion and a surge in greenhouse gas emissions, precipitating an energy crisis and exacerbating climate change. Hydrogen, characterized by its high energy density, sustainability, and environmentally benign combustion, is gaining prominence as a pivotal alternative for transitioning to non-polluting, renewable energy sources. Within the agricultural domain, hydrogen plays a significant role in fostering progress through its production, storage, and utilization. The conversion of agricultural waste into biohydrogen not only mitigates the energy crisis but also curbs waste accumulation during the production phase. In the realm of storage, research on hydrogen carriers that stimulate crop growth, ensure controlled release, and enhance stress resistance offers innovative pathways for improving hydrogen storage efficiency. During application, hydrogen, as an energy carrier and stress-relieving agent, significantly benefits soil microorganisms, crop growth, and livestock reproduction. Furthermore, the organic waste generated in this process can be reused for hydrogen generation, establishing a self-sustaining low-carbon circular agricultural ecosystem. This paper explores the latest research on hydrogen production, storage, and utilization in agriculture, aiming to provide new perspectives and practical guidance for achieving carbon neutrality and promoting the development of sustainable agriculture through the hydrogen cycle.