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Título

Compost properties related to particle size

Autor López Núñez, Rafael ; Hurtado, María Dolores; Cabrera, Francisco
Fecha de publicación 2002
EditorWIT Press
Citación Waste Management and the Environment 509-516 (2002)
ResumenSeveral properties (pH, electrical conductivity, contents of organic matter, nutrients, heavy metals, glass and impurities) were determined in different particle size fractions (0-0.5, 0.5-2, 2-5, 5-10, 10-25 and >25 mm) of various MSW composts produced in two composting facilities located at SW Spain (Montemarta-Sevilla and Villarrasa-Huelva). Mean percentages of the first five fractions were 9.6, 22.7, 29.2, 23.4 and 15.1 respectively. The MSW compost properties depended on particle size. Fine fractions (<2 mm) shown better quality than the mean compost: lower EC, Na content, C/N ratio, less glass and impurities indicated higher maturity and cleanness. Though this fine fraction had lower nutrient contents and the 0.5-2 mm fraction accumulated heavy metals, separation of the fine fraction would produce a compost more suitable for applications which require high stability compost, such as component for pot substrates. On the other hand, the >2 mm fractions tended to be richer in fertilizing elements, probably in relation with OM mineralization.
Descripción 8 páginas, 1 figura, 4 tablas, 7 referencias.-- Proceedings of First International Conference on Waste Management, held in 4-6 september 2002, Cádiz, Spain.
URI http://hdl.handle.net/10261/89579
ISBN 978-1-85312-919-3
1-85312-919-4
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