Scottish researchers are exploring a new process that could see fish-processing waste used to create one of the key components in the production of nylon. As much as 492,000 metric tons of waste is created by the United Kingdom’s fish-processing industry annually.
Plastic experts from Impact Solutions, biotechnology researchers from the University of Edinburgh, seafood producer Farne Salmon, and the Industrial Biotechnology Innovation Centre are employing biological enzymes to extract the fatty components of fish waste. Using advanced molecular biology, genetically-modified bacteria can then turn these into a mixture of adipic acid, a precursor to nylon and other useful byproducts.
According to the research team, the new process could allow for a more sustainable, circular approach to the production of adipic acid, instead of petrochemicals and processes that can be harmful to the environment. Adipic acid is also used in polyurethane-based items such as building insulation, furniture cushioning, cosmetics, lubricants, pharmaceuticals, food additives, and flavorings.
“The project marks the start of an exciting journey to find a sustainable alternative for a key component found in the fabric of our clothes. The initial feasibility study has led us to an exciting juncture where we can begin to see the potential of generating value from a material that would otherwise be discarded,” Impact Solutions Development Manager Simon Rathbone said.
In addition to creating adipic acid, the researchers want to maximize the overall value of the process by looking at other components that can be extracted from the fish waste, such as fatty acids and fish oils, says Rathbone.
Farne Salmon is providing the waste used in the feasibility study as part of its commitment to eliminating landfill waste.
“Our mission is to be a more sustainable business managing all aspects and impacts of our daily activities and in particular utilizing in full the scarce resources we impact upon on a daily basis,” Labeyrie Fine Foods Environment, and Projects Manager Angus Forbes said. “Our waste streams have been a major focus in recent years and wherever possible we have found routes to divert them to businesses who have the foresight and technology to utilize them as a raw material for further processing. We are therefore delighted to be involved in this project and look forward to providing further support in the future.”
