ALTERAÇÕES NAS CARACTERÍSTICAS FÍSICAS DO MATERIAL ORGÂNICO SUBMETIDO AO PROCESSO DE COMPOSTAGEM/CHANGES IN PHYSICAL CHARACTERISTICS OF ORGANIC MATERIAL SUBMITTED TO THE COMPOSTING PROCESS

This study aimed to evaluate the physical changes of organic material provided by the compost process for aerated static piles. The wastes used were from mixture of the bulking agent sugarcane bagasse and coffee straw with chicken litter, in order to obtain the initial C/N ratio of 25/1. The materia...

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Bibliographic Details
Published in:Engenharia na agricultura 2016-01, Vol.24 (1), p.41
Main Authors: Teixeira, Denis Leocádio, de Matos, Antonio Teixeira, Melo, Evandro de Castro
Format: Article
Language:Portuguese
Subjects:
Coffee
Composting
Sugarcane
Yard waste
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Summary:This study aimed to evaluate the physical changes of organic material provided by the compost process for aerated static piles. The wastes used were from mixture of the bulking agent sugarcane bagasse and coffee straw with chicken litter, in order to obtain the initial C/N ratio of 25/1. The material using the aerated static piles system was composted, for 30 days, at which time it was observed the end of thermophilic phase. The composting process contributed to increase the dry bulk density of the material in approximately 12 and 13%, respectively for the mixture which the sugarcane bagasse and coffee straw were the bulking agents. The initial volume decreased 60% in the mixture which the bulking agent was sugarcane bagasse and 36% when used the coffee straw. The power demanded by the fan to overcome the air static pressure drop imposed by material layer, decrease with the composting process, due the higher granulation of the material.
ISSN:1414-3984
1414-3984