Comparative analysis of phytotoxicity and compost quality in industrial composting facilities processing different organic wastes
Identifiers
URI: http://hdl.handle.net/10835/15018
ISSN: 0959-6526
DOI: https://doi.org/10.1016/j.jclepro.2019.119820
ISSN: 0959-6526
DOI: https://doi.org/10.1016/j.jclepro.2019.119820
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Siles Castellano, Ana Belén; López López, María José![University of Almería authority University of Almería authority](/themes/Mirage2/images/autoridades/autoridad.png)
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Date
2019-12-19Abstract
A comparative analysis of industrial composting facilities processing Vegetal Residues, Sewage Sludge,
Municipal Solid Waste, Agri-food Waste or Olive Mill Waste was performed. The evolution of phytotoxicity during composting was analyzed by measuring the germination index. Physico-chemical parameters (pH, electrical conductivity, organic matter, reducing sugars, phenolic compounds, humic
substances, soluble organic carbon, NeNH4
þ and NeNO3
-
) and heavy metals content were evaluated in
final products. The material became non-phytotoxic at the cooling phase or at the end of composting in
facilities processing Olive Mill Waste, Sewage Sludge, and Agri-food Waste. In facilities processing
Municipal Solid Waste and Vegetal Residues, the material never lost phytotoxicity. All composts, except
Municipal Solid Waste, fulfill requirements of the Spanish legislation for heavy metals content. Phytotoxicity was attributed to the high electrical conductivity and pH of the Vegetal Residu...
Palabra/s clave
Vegetal residues
Agri-food waste
Olive mill waste
Sewage sludge
Municipal solid waste
Germination index