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SustainabilityBased on 2 community discussions

What disposal or reuse options are available for spent brewing materials like juniper and grains when local anaerobic digestion plants refuse to accept them?

When standard anaerobic digestion routes close—as happened recently when two major local AD plants refused intake—members have identified several alternatives:

- **Animal feed** — Spent grains and similar brewing waste can be diverted to animal feed suppliers or farms as a feedstock. - **Specialty fertiliser projects** — Members have contacts developing waste-to-fertiliser conversion projects; reach out locally to see if your spent materials qualify as input feedstock. - **Food ingredient repurposing** — Spent berries and similar materials may have applications as marinades or other food products rather than waste.

**Caveat:** Traditional waste removal (e.g., tank cleaning via Biffa) is costly—one member reported a £3K charge for tank cleaning—so these reuse routes are preferable where feasible. The two major local anaerobic digesters have recently tightened intake due to increased household waste volumes, so backup plans are increasingly necessary.

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