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Contamination in organic products: An industry update. (26/08/20)

Physical contamination of organic products including composts and digestates is a prominent issue in the organic waste treatment sector.  The suite of PAS standards, Quality Compost, and Biofertiliser certification schemes are to be reviewed, and a revision to biowaste permits presents the prospect of feedstock contamination limits being introduced at processing sites.  These changes to end of waste standards and environmental permit conditions will clearly impact organic waste recyclers, yet will also have a profound impact on the wider organics supply chain.

As part of a work placement with the University of Leeds, WRM has sponsored research on the topic of physical contamination in organics and the impacts it will have on the wider industry.  William Grant, currently studying for an MSc in Sustainability and Consulting, has interviewed a range of stakeholders including local authorities, compost and AD operators, regulators, agricultural contractors and trade associations to identify the consequences of the reforms, and to understand how segments within the supply chain can respond.  The findings from the research form part of Will’s thesis which will be submitted for assessment in late August.

Will will also be making his finding available to the wider industry through an online presentation on August 26th at 12:30.  The presentation will be followed by a Q&A session with Will and members of the WRM team.

To register for the presentation, or to find out more about the research, please email


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