Biogenic carbon accounting in LCAmodelling: comparison of different criteria

14 different waste management scenarios were defined under a range of boundary conditions and a constant consumption of C-product (here assumed to be paper) and energy production within the combined system. For each of them, the load of C to the atmosphere was calculated under ideal conditions (i.e. efficiencies where not taken into account). The five sets of criteria were then
applied to these 14 scenarios and tested for their ability to predict the resulting CO2 load to the atmosphere.

A criterion was considered correct when it could rank the 14 waste scenarios consistently with the ranking defined by real C loads to atmosphere and the differences between scenarios (with respect to GWP) were similar to differences observed in C-loads to atmosphere for the same scenarios.

Two complete criteria sets were identified yielding fully consistent results: one set considers biogenic CO2 as neutral, the other one accounting it as contributing to global warming. The study showed that criteria for assigning global warming contributions are partly linked to the boundary conditions, which are assumed for the waste management system when performing the LCA study. While the boundary to the energy industry and the paper industry is typically specified in LCA studies, the boundary to the forestry industry and the interaction between the forestry and the energy industry should also be specified and consequently accounted for.

 

 

Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau der Wasserstoffinfrastruktur in Deutschland

Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens - ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.

Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit

 

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