The Stocks and Flows Model

A Stocks and Flows Model for WEEE, ELVs and batteries is being developed based on the conceptual model developed in CWIT – Countering WEEE Illegal Trade (FP7).

Different methods for characterising stocks and flows will be assessed in view of the levels of uncertainty and data quality and availability.  This will build on the UNU Multivariate Sales- Stocks- Lifespan Model. The model will provide data on how, where and when waste products accumulate and dissipate in the Urban Mine. The model developed will be tested and validated before the inclusion of product and waste composition data to produce an inventory of stocks and flows of CRMs in the Urban Mine.