Bactericidal and virucidal mechanisms in the alkaline disinfection of compost using calcium lime and ash.
J Environ Manage
; 181: 721-727, 2016 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-27562698
ABSTRACT
In the present study, the bactericidal and virucidal mechanisms in the alkaline disinfection of compost with calcium lime and ash were investigated. Two indicator microorganisms, Escherichia coli and MS2 coliphage, were used as surrogates for enteric pathogens. The alkaline-treated compost with calcium oxide (CaO) or ash resulted primarily in damage to the outer membrane and enzyme activities of E. coli. The alkaline treatment of compost also led to the infectivity loss of the coliphage because of the partial capsid damage and RNA exteriorization due to a raised pH, which is proportional to the amount of alkaline agents added. These results indicate that the alkaline treatment of compost using calcium oxide and ash is effective and can contribute to the safe usage of compost from a mixing type dry toilet.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óxidos
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Solo
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Microbiologia do Solo
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Desinfecção
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Colífagos
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Compostos de Cálcio
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Escherichia coli
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Cinza de Carvão
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article