Mass and energy balances

Abstract

This chapter examines mass and energy balances for the composting process. It begins by discussing the complexity of organic solid matrices, and how their heterogeneous nature influences mass and energy flows. Key requirements for effective composting are then outlined, including the importance of maintaining sufficient water content, adequate air space, appropriate air permeability, and resistance to compaction to ensure optimal aerobic conditions. This chapter also provides a detailed analysis of various balances-mass, water, carbon, nitrogen, other nutrients, and energy-that are crucial for optimizing the composting process. Practical recommendations are offered to help maintain efficient and sustainable mass and energy flows in composting systems.