Data/hora: 10/06/2024 02:59:29

Biblioteca(s): | Embrapa Solos.
Data corrente: | 01/04/2014
Data da última atualização: | 23/05/2014
Autoria: | INACIO, C. de T.; MAGALHÃES, A. M. T.; SOUSA, P. O.; CHALK, M.
Afiliação: | CAIO DE TEVES INACIO, CNPS; Alberto Menezes Taveira Magalhães; Paulo Oliveira Sousa; Michael Chalk.
Título: | The isotopic composition (d15N, d13C) of agricultural wastes and derived composts.
Ano de publicação: | 2013
Fonte/Imprenta: | In: SYMPOSIUM ON AGRICULTURAL AND AGROINDUSTRIAL WASTE MANAGEMENT, 3., 2013, São Pedro, SP.Resumos...Woburn, MA: Sbera, 2013.
Idioma: | Português
Conteúdo: | The aim of this study was to measure variations in the isotopic composition (d13C and d15N) during the composting of different agricultural wastes using bench-scale bioreactors. Four different feedstocks of agricultural wastes (Horse bedding manure + legumes residues; Dairy manure + Jatropha mill cake; Dairy manure + sugarcane residues; Dairy manure) were used for aerobic-thermophilic composting. During composting no significant differences were found between the d13C values of the source material and the compost, except for Dairy manure + sugarcane residues. d15N values increased significantly in composts of Horse bedding manure + legumes residues and Dairy manure + Jatropha mill cake. d15N values of composts may be related to NH3 volatilization during the composting process. Isotopic signatures (d13C, d15N) can be used to differentiate composts from different feedstock sources and d15N values may be a quantitative indicator of NH3 volatilization during composting. Use of bench-scale bioreactors is a promising apparatus to study the dynamics of C and N and stable isotopes signatures during composting, but future adjustments regarding sampling methodology are necessary.
Palavras-Chave: | Bioreactor; D13C; D15N.
Thesaurus Nal: | composting; organic fertilizers; organic wastes.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/100378/1/CompostingStableIsotopes-Inacio.pdf
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (18109-1) - UPC - RA - DD - 14.00217 -  - 14.00217 - DIS