Dutch Scientists Replace Toxic Chemicals with Electricity to Make Pharmaceutical Building Blocks
Wageningen, Wednesday, 25 March 2026.
Wageningen University researchers have created a breakthrough electrochemical process that produces 2(5H)-furanone, a crucial building block for medicines and plastics, using only electricity and harmless salts instead of dangerous liquid bromine. The innovation eliminates the need to store toxic chemicals while converting agricultural waste into valuable pharmaceutical components. Their simple reactor design consumes less than 0.5% of the electricity used by a kettle, offering a safer and more sustainable path for chemical manufacturing that could revolutionize how Europe produces essential materials for drugs and industrial applications.
Breakthrough Innovation in Pharmaceutical Chemistry
This development represents a significant advancement in pharmaceutical and chemical manufacturing technology [GPT]. The research, conducted by a team at Wageningen University & Research in collaboration with Utrecht University, focuses specifically on creating 2(5H)-furanone, a versatile chemical compound that serves as a foundation for manufacturing plastics, medicines, and flavor and fragrance ingredients [1][2]. Dmitri Pirgach, a PhD candidate at Wageningen, led the practical implementation of this electrochemical process, successfully producing the target compound from furfural, which is extracted from sugars found in plant-based agricultural waste [1][3]. Professor Harry Bitter of Biobased Chemistry and Technology at Wageningen served as the senior author of the study, which was published in the scientific journal ChemSusChem [2][3].
Revolutionary Safety Improvements
The traditional method for converting furfural into 2(5H)-furanone required the use of liquid bromine, a highly toxic red-brown substance that poses significant safety risks during storage and transportation [1][3]. The new electrochemical approach eliminates this hazard by using relatively harmless bromide salts, such as sodium bromide, instead of liquid bromine [1][2][3]. When electrical current passes through the reactor, the bromide is oxidized at the electrode to form bromine only when needed for the chemical reaction [3]. “The bromine forms only when required,” explains Professor Bitter, emphasizing how this on-demand generation significantly improves process safety [1][2][3]. This innovation means chemical plants would no longer need to maintain dangerous stockpiles of toxic bromine, substantially reducing workplace hazards and environmental risks [3].
Simplified and Energy-Efficient Design
The research team achieved remarkable efficiency by developing an undivided electrochemical cell reactor that operates without a separating membrane [1][2]. This design choice makes the reactor both cheaper and more energy-efficient compared to traditional divided cell reactors that require membranes [2]. Professor Bitter explains the energy advantage: “You can think of a membrane as a fine-meshed sieve through which ions must be forced, which requires additional electrical energy” [1][2]. The streamlined process requires only a small amount of sulfuric acid added to the reaction mixture to minimize unwanted byproducts and optimize furanone formation [1][2]. In laboratory experiments, researchers produced 0.3 milliliters of furanone while consuming less than 0.5% of the electricity needed by an electric kettle to boil water [1][2].
Sustainable Chemistry for European Industry
The innovation aligns perfectly with the growing emphasis on bio-based and circular chemistry principles [2]. Daan van Es, co-author and expert in applied, sustainable, and circular chemistry at Wageningen, describes the breakthrough as “a great combination of using renewable electricity with renewable raw materials to create building blocks for circular products” [2][3]. The starting material, furfural, derives from plant-based residual streams such as agricultural waste, while the electricity required for the reaction could potentially come from renewable energy sources [2][3]. Van Es acknowledges that “there is still a long way to go before we can apply this industrially, but it has a lot of potential,” particularly noting that “the mild reaction conditions and the possibility of local production in the Netherlands are particularly relevant for the future of the European chemical industry” [2][3]. The research team includes additional co-authors Wai-Yin Sim, Fedor Miloserdov, and Pieter Bruijnincx, and the next phase involves optimizing and scaling up the process for industrial application [2][3].