Page 159 - Materials Chemistry, Second Edition

3.7 Illustration of the Inventory Phase by an Example 143

Put into circulation: 100%
80% 20%

80%
Collection Litter bin
Sorting
12%
58% 27% 15%
1.4% 21.6% 6%
46.4% 6%
Re-sorting of mixed plastics fraction
15% 15% 70%
20%
Re-sorting
97% 3%

45% 3.45% 3.45% 16.1%

Material recovery Gasification to Blast furnace Cement plant Waste incineration
(PET-flakes) methanol (MSWI)

Figure 3.29 Material flow of PET bottles after use.

3.7.1.4 Recovery of Transport Packaging
For transport packaging, recovery is based on:

LDPE foil: 90% material recovery and 10% thermal recovery (MSWI, Municipal
Solid Waste Incineration)
Corrugated cardboard: 95% material recovery and 5% thermal recovery (Munic-
ipal Waste Incineration Plant, MWIP).
3.7.2
Analysis of Production, Recovery Technologies and Other Relevant Processes
of the Production System

3.7.2.1 Production Procedures of the Materials
For the definition of unit processes a differentiated analysis of production proce-
dures starting from the raw materials is necessary. In the course of this analysis
it is useful to check the data availability: are useful generic data available or is the
gathering of primary data necessary? It is clear from the examples that data records
that have been gathered in earlier studies as primary data can be used as generic
data in a subsequent study. For the production of materials, no primary data were
procured in this study. The quality of available generic data has been judged as
being applicable in the study.
In the following the data origins are summarised.