BSI PAS 110: Producing Quality Anaerobic Digestate

10th January 2017

‘PAS110’ was developed by WRAP to help create a market for the use of anaerobic digestate as a renewable fertiliser.

Key points:
Controls on input materials and the management system for the process of anaerobic digestion and associated technologies
Minimum quality of whole digestate, separated fibre and separated liquor
Information that is required to be supplied to the digestate recipient



Processing food waste and other organic materials such as livestock manures and slurries in an anaerobic digester (also known as a biogas plant) produces biomethane, which can be used as a source of renewable energy, and digestate. Digestate is a slurry like liquid that is rich in nutrients and used as a renewable fertiliser.

The British Standard Institution’s Publically Available Specification (BSI PAS 110) provides a baseline quality specification for digestate, ensuring that it is safe and reliable to use. PAS110 includes requirements about how food waste and other materials can be processed, and is one of the fundamental pillars of the Biofertiliser Certification Scheme.

Close to 2 million tonnes of digestate accredited under the Biofertiliser Certification Scheme are produced in the UK every year. They are used as renewable fertilisers in agriculture, field-grown horticulture, forestry and land restoration.

PAS110 came into effect on 31 July 2014.

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Terms of use

Terms of use

The Publicly Available Specifications (PAS) which are available for download from this website are made available to the public with the permission of the British Standards Institution (BSI) under licence. Copyright in all BSI publications is owned by the BSI. Please respect this copyright.

The PAS are available to download on the condition that they are not reproduced, duplicated, copied, sold, resold or exploited for any commercial purposes.

Downloads from this website are subject to WRAP’s Terms and Conditions.

Before downloading the PAS document please provide the information required below (marked with an asterisk). This will be used by WRAP to monitor usage of its PAS download facility. Your personal information will never be supplied by WRAP to third parties without first obtaining your consent, unless WRAP is obliged by law to disclose such information.

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Where next?

Want to know more about anaerobic digestion? Take a look at our reports, guides, tools and case studies for further information:

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