Figure 1. Stages of a composting system. Solution boundaries exclude activities upstream and downstream of centralized MSW composting such as waste collection and compost application. Modified from Kawai et al. (2020) and Manea et al. (2024).

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Diagram demonstrating process steps for landfill and compost materials.

Source: Kawai et al. (2020) and Manea et al. (2024).