Electro-photochemical conversion of furfural to hydroxybutenolide
Publieke samenvatting / Public summary
Aanleiding
Circolide is accelerating the transition toward a circular and low-carbon chemical sector. The company has developed a novel production route for bio-based butenolides, a key building block for next-generation resins and coatings. The compound is produced via photochemical oxidation of furfural using visible light generated by high-efficiency LEDs powered entirely by renewable electricity, a direct application of green electrons, converting electrical energy into chemical energy through light. The fossil-free process is highly selective, scalable, and compatible with existing production routes. Circolide has demonstrated production at pilot scale (capacity 10 kg/day), with supplying kg-scale quantities to customers for product development, supported by multiple application patents. Industrial interest is growing: AkzoNobel has issued a Letter of Intent (see Appendix 1) for further industrial validation. The next step is scaling to a demonstration plant (200-500kg/day production capacity). This study will support decision-making on CO2 emission reduction options and integration into the Northern Netherlands' renewable-based chemical cluster.
Doelstelling
The objective of this study is to support decision-making on the demonstration-scale implementation of Circolide's novel photochemical oxidation of furfural to butenolide enabled by renewable electricity, eliminating fossil feedstocks, heat, and oxidants. The study will design a continuous flow LED-based photoreactor optimized for photon flux, oxygen (and air) transfer, safety, and integration with downstream condensation. It will deliver a complete design concept, techno-economic assessment, and screening life cycle assessment (LCA) to evaluate cost, energy use, and CO2 performance versus conventional acrylate routes. In line with the objectives of the TSE industry, this study advances electrification of chemical production by replacing a fossil-based acrylate production route with a renewable electricity driven photochemical process. It reduces technical and economic uncertainties required to progress to TLR 7-8 and defines a roadmap towards industrial demonstration plant in the Netherlands, supporting progression to TRL 7–8 and contributing to the decarbonization and electrification of the Dutch chemical industry.
Korte omschrijving
The project consists of an environmental study to support the scale-up of Circolide's photochemical process. Activities include literature and patent reviews, consultations with technology suppliers and industrial partners, and structured use of data from the existing pilot plant. Testing at existing pilot-scale installation is carried out to validate key assumptions related to reaction performance, light delivery, oxygen handling, heat management, and continuous operation. Expert sessions are used to review technical choices, safety aspects, and energy integration. Front-end engineering activities cover the development of mass and energy balances, process flow diagrams, and preliminary equipment specifications for the core process and supporting systems. The work is organised in a phased FEL approach, progressing from preliminary design bases such as definition to conceptual design of the process, utilities, and infrastructure, and concluding with an environmental impact scan and the preparation of a consolidated concept, business case, and project execution strategy.
Resultaat
The study will deliver a comprehensive assessment of the technical, economic and environmental impacts of scaling a photochemical oxidation process to demonstration scale to produce bio-based butenolide. The main result will be an evidence-based conclusion on the impact of implementing this process in an industrial demonstration plant. Key results include a complete conceptual design for a continuous-flow photochemical process integrated with downstream condensation at a target capacity of approximately 200 kg/day. Moreover, the study will provide detailed techno-economic insights, including CAPEX and OPEX estimates, sensitivity to key cost drivers, and a comparison with conventional fossil-based acrylate production routes. An environmental assessment via screening LCA will quantify CO2-reduction potential and broader sustainability benefits. Finally, the study will deliver a roadmap towards a TRL 7 demonstration, defining required development steps, site conditions, partners, funding needs and generate transferable insights into the scalability of LED driven photochemistry as a low-emission alternative for the chemical industry.
Circolide is accelerating the transition toward a circular and low-carbon chemical sector. The company has developed a novel production route for bio-based butenolides, a key building block for next-generation resins and coatings. The compound is produced via photochemical oxidation of furfural using visible light generated by high-efficiency LEDs powered entirely by renewable electricity, a direct application of green electrons, converting electrical energy into chemical energy through light. The fossil-free process is highly selective, scalable, and compatible with existing production routes. Circolide has demonstrated production at pilot scale (capacity 10 kg/day), with supplying kg-scale quantities to customers for product development, supported by multiple application patents. Industrial interest is growing: AkzoNobel has issued a Letter of Intent (see Appendix 1) for further industrial validation. The next step is scaling to a demonstration plant (200-500kg/day production capacity). This study will support decision-making on CO2 emission reduction options and integration into the Northern Netherlands' renewable-based chemical cluster.
Doelstelling
The objective of this study is to support decision-making on the demonstration-scale implementation of Circolide's novel photochemical oxidation of furfural to butenolide enabled by renewable electricity, eliminating fossil feedstocks, heat, and oxidants. The study will design a continuous flow LED-based photoreactor optimized for photon flux, oxygen (and air) transfer, safety, and integration with downstream condensation. It will deliver a complete design concept, techno-economic assessment, and screening life cycle assessment (LCA) to evaluate cost, energy use, and CO2 performance versus conventional acrylate routes. In line with the objectives of the TSE industry, this study advances electrification of chemical production by replacing a fossil-based acrylate production route with a renewable electricity driven photochemical process. It reduces technical and economic uncertainties required to progress to TLR 7-8 and defines a roadmap towards industrial demonstration plant in the Netherlands, supporting progression to TRL 7–8 and contributing to the decarbonization and electrification of the Dutch chemical industry.
Korte omschrijving
The project consists of an environmental study to support the scale-up of Circolide's photochemical process. Activities include literature and patent reviews, consultations with technology suppliers and industrial partners, and structured use of data from the existing pilot plant. Testing at existing pilot-scale installation is carried out to validate key assumptions related to reaction performance, light delivery, oxygen handling, heat management, and continuous operation. Expert sessions are used to review technical choices, safety aspects, and energy integration. Front-end engineering activities cover the development of mass and energy balances, process flow diagrams, and preliminary equipment specifications for the core process and supporting systems. The work is organised in a phased FEL approach, progressing from preliminary design bases such as definition to conceptual design of the process, utilities, and infrastructure, and concluding with an environmental impact scan and the preparation of a consolidated concept, business case, and project execution strategy.
Resultaat
The study will deliver a comprehensive assessment of the technical, economic and environmental impacts of scaling a photochemical oxidation process to demonstration scale to produce bio-based butenolide. The main result will be an evidence-based conclusion on the impact of implementing this process in an industrial demonstration plant. Key results include a complete conceptual design for a continuous-flow photochemical process integrated with downstream condensation at a target capacity of approximately 200 kg/day. Moreover, the study will provide detailed techno-economic insights, including CAPEX and OPEX estimates, sensitivity to key cost drivers, and a comparison with conventional fossil-based acrylate production routes. An environmental assessment via screening LCA will quantify CO2-reduction potential and broader sustainability benefits. Finally, the study will deliver a roadmap towards a TRL 7 demonstration, defining required development steps, site conditions, partners, funding needs and generate transferable insights into the scalability of LED driven photochemistry as a low-emission alternative for the chemical industry.
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