Distribution of C and N mineralization of a sludge compost within particle-size fractions.
Bioresour Technol
; 101(4): 1254-62, 2010 Feb.
Article
en En
| MEDLINE
| ID: mdl-19819691
ABSTRACT
The contribution of particle-size fractions to carbon (C) and nitrogen (N) mineralization of sludge compost was investigated. Particle-size fractionation was performed using "dry" (sieving of total dry compost) and "wet" (dispersion of compost in water, followed by sieving) fractionation methods, then C and N mineralization of the separated fractions were measured during incubation in soil. The "dry" fractionation did not allow the actual particle-size distribution of compost to be estimated accurately. Out of all the "wet" fractions, the [0-50 microm] fraction was the most significant fraction in compost mass and contributed the most to the N mineralization of sludge compost in soil. Its low degradability, positive N mineralization and similarities with sludge OM suggest that the most humified sludge organic matter was located in this fraction, which would probably contribute to C storage and N availability after compost application in soil. Other fractions (>200 microm) were more readily biodegradable and induced N immobilization.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Tamaño de la Partícula
/
Aguas del Alcantarillado
/
Suelo
/
Carbono
/
Minerales
/
Nitrógeno
Idioma:
En
Revista:
Bioresour Technol
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2010
Tipo del documento:
Article
País de afiliación:
Francia