Suchergebnisse

The study describes the intermediate uses of 53 petroleum and coal stream (PetCo) substances and assesses the potential for their constituents with properties of concern to transfer within the supply chain and into the environment. The study focuses on 15 marker constituents that have been shortlisted based on a screening of CMR (carcinogenic, mutagenic, reprotoxic), PBT (persistent, bioaccumulative and toxic) and ED (endocrine disrupting) properties. The study relies on a combination of five approaches. Approach 0 considers the reactivity of the relevant constituent groups to assess how likely they are to be converted in one of the relevant processes. Approach 1 relies on literature review to assess likelihood of the marker constituents being converted in the relevant process based on thermodynamic and other factors such as the presence of catalysts. Approach 2 modifies the results of Approach 1 by adding information collected through consultation for this study. Approach 3 further adds the dimension of supply chain interactions to screen out the products that are subject to high-temperature processes further downstream. Approach 4 takes an upstream perspective and includes a review of the literature on the presence of some of the relevant constituents in the relevant end-products. Each of these approaches has its advantages and disadvantages and, for this reason, the results of all five approaches are presented in the report. In addition, the report provides an overview of the potential for the constituents that are not converted to be emitted into the environment.