Chinese scientists convert farm waste into high-value biochar in green tech breakthrough

Chinese researchers have developed a new technology for the efficient large-scale production of biochar from agricultural and forestry biomass. This advancement, recognized by an expert panel, was reported by Science and Technology Daily. The technology was developed by the Institute of Environment under the Hefei Comprehensive National Science Center after more than a decade of research.

The process enables the conversion of biomass into high-value biochar through a one-step catalytic dry process. This development represents a significant step in transforming agricultural waste into a valuable resource, supporting environmental sustainability and industrial advancement.

Xing Xianjun, project leader and deputy director of the institute, stated that China, as a major agricultural country with abundant biomass resources, aims to upgrade these resources into high-value applications. This initiative supports the nation's carbon peaking and carbon neutrality goals.

The new technology addresses key challenges in traditional biochar production, such as low yield, poor quality, high energy consumption, and environmental pollution. A single high-pressure carbonization unit can now produce over 50,000 tonnes of biochar annually. The technology has been deployed in multiple cities, generating substantial economic, social, and environmental benefits.

Biochar, a carbon-rich material produced by heating biomass in an oxygen-limited environment, has multiple applications with significant economic value. In agriculture, it enhances soil by improving nutrient retention and soil structure, thereby boosting crop yields.

The research team has also developed functional biochar-based materials for applications in energy storage, environmental adsorption, and catalysis. A project to produce green aviation fuel from biochar is advancing rapidly in Bozhou, Anhui Province.