Bioavailability of heavy metals to urban agricultural food and biofuel crops and their remediation potential

Supervisor  

Dr Jill Edmondson, Department of Animal and Plant Sciences

Co-supervisors 

Dr Manoj Menon, Lecturer in Soil/Environmental Science

Dr Janice Lake, Department of Animal and Plant Sciences


Grantham Scholar

Marta Crispo

More than half the world’s population live in urban areas. Consequently, urban areas are drivers of global change and there is heavy reliance on imported food and energy. Increasing sustainable own-grown food and biofuel production in urban areas could reduce this environmental impact. Urban soils can contain high concentrations of heavy metals which may pose a risk to human health if used for food production. However, these heavy metals often co-occur with black carbon, a suite of molecules ranging from soots to biochar, reducing the pollutant bioavailability. Thus, this project will address two key questions:

Coppice willow has been proposed as a sustainable way to remediate contaminated soils as it naturally accumulates heavy metals. This presents the opportunity to simultaneously remediate urban land unsuitable for food production, whilst producing a biofuel. Moreover, biochar, which can be produced when short rotation coppice is used as a feedstock for energy production, has the potential to reduce pollutant bioavailability. This project will establish an own-growing and short rotation coppice experiment in an urban allotment site, working with our collaborative partners Leicester City Council.