English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/16041
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Evaluation of extracted organic carbon and microbial biomass as stability parameters in ligno-cellulosic waste composts

AuthorsMondini, C.; Sánchez-Monedero, Miguel Ángel ; Sinicco, T.; Leita, L.
KeywordsWaste Management
Organic Carbon
Microbial Biomass
Issue Date27-Oct-2006
PublisherAmerican Society of Agronomy
CitationJournal of Environmental Quality 35: 2313-2320 (2006)
AbstractExtracted organic C and microbial biomass were evaluated as stability parameters in 3 different ligno-cellulosic waste composts. Organic C was extracted by both water and alkali and further separated in humic-like carbon (HLC) and nonhumic carbon (NHC). Conventional humification parameters, such as humification index and degree of humification were calculated from NHC and HLC. Microbial biomass carbon (BC) was determined as an indicator of the degree of biochemical transformation, whereas ninhydrin reactive N (BNIN) was measured to obtain the stability parameter BNIN/NTOT (NTOT, total N). The water-extracted organic C did not provide reliable information on the transformations underwent by the ligno-cellulosic wastes during composting, since its content remained almost unaltered during the whole process. In contrast, parameters based on the alkali-extracted organic C and microbial biomass clearly reflected organic matter (OM) changes during the process. There was an increase in the net amount of HLC in the alkali extracts throughout composting, especially in the first 7 to 12 wk of the process, as well as a relative enrichment of HLC with respect to NHC. Values of humification index and degree of humification in end products were consistent with an adequate level of compost stability. The stability parameter BNIN/NTOT showed to be a reliable indicator of stability in ligno-cellulosic wastes. Parameters based on the alkali-extracted C and microbial biomass clearly reflected the transformation of the OM during composting and can be used as stability parameters in ligno-cellulosic waste composts.
DescriptionTechnical Reports
Publisher version (URL)http://dx.doi.org/10.2134/jeq2006.0055
URIhttp://hdl.handle.net/10261/16041
DOI10.2134/jeq2006.0055
ISSN0047-2425
Appears in Collections:(CEBAS) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.