Industrial composting of low carbon/nitrogen ratio mixtures of agri-food waste and impact on compost quality
The agri-food waste (AW) require amendments for composting to adjust nutritional and physicochemical deficiencies. The theoretical mixtures formulation is difficult to reach on an industrial scale. The main objective of this work was to evaluate to what extent the composition of AW-based mixtures d...
| Main Authors: | , , , , , , |
|---|---|
| Format: | info:eu-repo/semantics/article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10835/15021 https://doi.org/10.1016/j.biortech.2020.123946 |
| Summary: | The agri-food waste (AW) require amendments for composting to adjust nutritional and physicochemical deficiencies. The theoretical mixtures formulation is difficult to reach on an industrial scale. The main objective of
this work was to evaluate to what extent the composition of AW-based mixtures determines the quality of the
final compost produced at the industrial scale. Raw materials having the same AW share characteristics, irrespectively of the amendments added, but their compost were different. All the materials were biological stable at
the cooling phase, and mature enough at the end, although the degree of humification did not match with the
absence of phytotoxicity. The final compost had sufficient quality even though the AW-based raw materials have
a low C/N ratio (< 20) and other characteristics such as high electrical conductivity (13 mS·cm−1
) and pH
(< 8.5) that are unfavorable for composting. The management operations during industrial composting correct
the deficiencies of raw materials. |
|---|