High-value chemicals from household waste

The biological portion of municipal and commercial solid waste (BioSW) is one of the most abundant feedstocks in the UK with over 50 mT produced each year. Beyond volume, the existing infrastructure and year-round availability make this “waste” an attractive resource for the production of biorenewable fuels and chemicals, not least because of its current economic and environmental burdens.

Developing effective systems to turn BioSW into useful products, such as high-value chemicals and biofuels, is a challenge that Wilson Bio-Chemical is now tackling with the help of researchers at the Centre for Novel Agricultural Products (CNAP) in the Biology Department, University of York; and scale-up specialists at the Biorenewables Development Centre (BDC).  This work has the potential to be a game-changing approach to mixed waste that will not only divert waste from landfill, but also displace fossil fuels and their associated carbon emissions.

“These collaborations are crucial to taking our process to the next level.  With this support, we will be able to better explore what high-value applications this material has and improve our process to make the most out of this waste stream,” says Peter Metcalf, Research & Development Director at Wilson Bio-Chemical.

Creating value from this challenging feedstock will need a multidisciplinary approach, involving systems biology to adapt fermentation organisms for growth on the fibre as well as process engineering and life-cycle analysis to understand the techno-economic and environmental aspects of its use. 

Building on Wilson’s expertise in steam-treatment for the initial breakdown of biogenic materials, their collaborations with the experts in York have to date involved multiple funded* initiatives:

  • Various lab-based process engineering and systems biology projects to hone the initial autoclaving process and optimise enzymes for use in the fermentation stage
  • Commissioning a new pilot-scale autoclave situated in the BDC’s plug and play facility that supports two initial activities that demonstrate the potential of the fibre as a coal substitute, as well as to produce biobutanol, ethanol, acetone and hydrogen
  • Multidisciplinary studentship to underpin advances for Wilson and expand the science base at the University of York

“Our teams in CNAP and the BDC bring a wealth of knowledge and experience in the production of sustainable biofuels, marrying these with the innovative work of Wilson will help us to realise the potential of converting a national liability, such as household waste, into everyday chemicals – without growing crops for fuel instead of food” says CNAP Director, Simon McQueen-Mason.

*Funding includes:  Business assist and capital grants through the European Regional Development Funding; Small Innovation Project (SIP) from Yorkshire Innovation Fund; Innovate UK, and BBSRC CASE Studentship.

** Image courtesy of Untha UK (2014). Untitled. Available from: http://www.untha.co.uk/wp-content/uploads/2014/07/RDF.jpg [Accessed on 16 December 2014]

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