| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Crude glycerin in co-composting with laying hen manure reduces N losses
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| Autores: |
Orrico Junior,Marco Antonio Previdelli
Orrico,Ana Carolina Amorim
Fava,Aldo Felipe
Sunada,Natália da Silva
Schwingel,Alice Watte
Garcia,Rodrigo Garófallo
Borquis,Rusbel Raul Aspilcueta
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| Data: |
2018-09-01
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| Ano: |
2018
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| Palavras-chave: |
Windrows
Total solids
Volatile solids
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| Resumo: |
ABSTRACT: The composting of laying hen manure is an efficient way of treating waste and producing an organic fertilizer with excellent characteristics; however, the high N losses reduce its concentration in the resulting fertilizer. Associating this residue with crude glycerin (CG) promotes a better C:N ratio and contributes to higher N retention during composting, with improvements in solids reduction and production of organic fertilizer with higher concentration of this nutrient. We carried out this research considering the hypothesis that adding CG – a byproduct of biodiesel production – to laying hen waste composting provides better N retention in the fertilizer generated. Increasing CG doses (0, 3, 6, 9, and 12 % in relation to the fresh mass in the windrows) were added to the laying hen manure with windrows composted for 70 days. A reduction by 100 % in total and thermotolerant coliforms occurred at all levels of CG addition. The maximum reductions in total (TS) and volatile (VS) solids were 64 and 76 %, respectively, and occurred with the addition of 6 % CG. The windrows that did not receive CG had higher N losses during the process (32 %) while the highest N concentration in the compost was 5 % at 6 % CG. We identified that adding 6 % CG to the laying hen manure in co-composting increases the reductions in TS and VS and provides higher N retention, which improves the quality of the organic fertilizer.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162018000500361
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/1678-992x-2016-0478
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.75 n.5 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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