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SE—Structure and Environment: Performance Characteristics of Three Aeration Systems in the Composting of Sheep Manure and Straw

✍ Scribed by M.L. Solano; F. Iriarte; P. Ciria; M.J. Negro

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
393 KB
Volume
79
Category
Article
ISSN
0021-8634

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✦ Synopsis

Composting of sheep manure mixed with straw was carried out in a pilot plant using three di!erent systems of aeration: pile turning; forced aeration of static pile; and passive aeration of static pile. The aim was to investigate which of these three systems was the most appropriate for the management of the manure and straw. The e!ects of the such composting systems on the e!ectiveness of composting were examined by measuring parameters such as temperature, pH, organic matter content, moisture content, changes in polysaccharide, carbon and nitrogen content. Di!erent hydrolases activities of agricultural interest (urease, phosphatase, -glucosidase and cellulase) which are involved in the nitrogen, phosphorous and carbon cycles were also determined. The analysis of all three composts obtained showed similar characteristics. In the passive aeration system, much of the capital and operating costs are reduced since neither the heap needs turning nor is a forced aeration system required. Besides, this system has the lowest nitrogen loss, so it could be considered as the most advisable system for small farms.

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