Used printed wiring boards (treatment of scrap printed wiring boards - shredding and separation)

The activity generating the emissions is treatment of scrap printed wiring boards, shredding and separation. The Reference Product is used printed wiring boards. Used printed wiring boards is a solid waste under the category of industrial wastes. It is primarily generated in end-of-life of warious electric devices. used printed wiring boards contain the following fractions: 100% electronics scrap. By the database default (and per unit of reference product),used printed wiring boards has 0% water on wet mass basis (100% dry matter) and Carbon present is of both fossil (19.37% on a dry matter basis), and non-fossil origin (0.1% on a dry matter basis). It has no heating value. This kind of by-product (recyclable or waste) is generated from ordinary transforming activities, and as such can be considered for modelling waste outputs of comparable composition. In the ecoinvent database, treatment option/s for this by-product include: mechanical (shredding). Based on the aforementioned treatments, this by-product receives, it is a hazardous waste. This by-product can be modelled on two levels: treatment activity and market activity. The former one refers to the specific technology treating the by-product while the latter level represents a mix of treatments. Users are encouraged to inspect the modelling assumptions of the treatment activities and when selecting the market to additionally inspect the treatment mix. Collection and transportation of this by-product is accounted in the respective market activity, users are advised to inspect and modify the average transportation distances for a case specific modelling. The Reference Product amount is -1. The cut-off classification is Waste. The activity type is ordinary transforming activity. Please refer to the ecoinvent documentation for full details: https://ecoquery.ecoinvent.org/3.12/cutoff/dataset/10993/documentation