DARPA Program to Turn Waste into Chemicals

The Fleetwood program is managed by Dr. William Mounfield in DARPA's Biological Technologies Office, which aims to revolutionize the valorization of lignin. Lignin is the second most abundant natural polymer and is a major waste product of the paper and agricultural industries, with gigatons discarded annually. The program will focus on developing novel catalysts to convert this waste into valuable aromatic compounds, which are otherwise difficult to produce. Fleetwood will explore multiple catalytic pathways, including cell-free biocatalysis, thermocatalysis, and electrocatalysis, to achieve complete delignification and depolymerization of biomass. The 24-month program is structured in two 12-month phases and builds on scientific breakthroughs like reductive catalytic fractionation, a technique that can selectively break down lignin into stable chemical building blocks. The program targets the production of high-value platform chemicals from lignin, such as vanillin, syringaldehyde, guaiacol, and catechol. These chemicals are crucial precursors for a range of products including plastics, adhesives, composites, fragrances, and pharmaceuticals. A key technical challenge is overcoming the recalcitrance of lignin, which is often just burned for low-value heat. This initiative directly addresses supply chain vulnerabilities. For example, the U.S. is the world's largest importer of vanilla and vanillin, with the North American market valued at $1.41 billion in 2024. Creating bio-based vanillin from domestic waste could reduce this import reliance. Similarly, China is the largest exporter of guaiacol, another potential Fleetwood product, highlighting an opportunity to onshore production. The market for these bio-based chemicals is substantial and growing. The U.S. syringaldehyde market alone was valued at $2.03 billion in 2024 and is projected to reach $3.87 billion by 2034. The global market for catechol, another target chemical, was estimated at $170.3 million in 2025 and is forecasted to grow, driven by demand in agrochemicals and electronics. This program follows previous DARPA efforts like the ReSource program, which focused on converting mixed waste, including plastics, into strategic materials and chemicals. Success in the Fleetwood program aims to enable smaller, modular biorefineries that can bolster domestic manufacturing and reduce dependence on foreign oil. An industry day was scheduled for March 12, 2026, to engage with researchers from academia and the private sector.