Enzymatic profiles associated with the evolution of the lignocellulosic fraction during industrial-scale composting of anthropogenic waste: Comparative analysis
Identificadores
URI: http://hdl.handle.net/10835/15020
ISSN: 0301-4797
DOI: https://doi.org/10.1016/j.jenvman.2019.109312
ISSN: 0301-4797
DOI: https://doi.org/10.1016/j.jenvman.2019.109312
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Estrella González, Maria José; Jurado Rodríguez, Macarena Del Mar; Suárez Estrella, Francisca; López López, María José; López González, Juan Antonio; [et al.]Fecha
2019-07-24Resumen
In the new European Waste Law, composting is proposed as one of the best options to properly manage organic
waste of anthropogenic origin. Currently, the massive generation of this type of waste, as well as its heterogeneity, makes difficult in many cases control this process of degradation on an industrial scale.
In this work, 15 facilities were selected based on 5 types of organic waste: Urban Solid Waste, Vegetable
Waste, Sewage Sludges, Agrifood Waste and “Alpeorujo”. The samples were collected in different thermal
phases. The results revealed very different physicochemical and enzymatic profiles, as well as different degrees
of humification depending on the process and the raw materials. However, parameters such as β-glucosidase,
amylase, lignin/holocellulose ratio and humification rate showed similar trends in all cases. All of them could act
as important indicators to evaluate the quality of a composting process, despite the heterogeneity of the starting
materials.
Palabra/s clave
Industrial-scale composting
Lignocellulose
Humification
Carbon cycle-related enzymes
Compost quality