Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10400.5/5005
Título: | Efeito da digestão anaeróbia e da estabilização com cal na mineralização do carbono e do azoto de lamas de ETAR |
Outros títulos: | Effect of anaerobic digestion and lime stabilization on sewage sludge carbon and nitrogen mineralization |
Autor: | Bancessi, Aducabe Ribeiro, Henrique Manuel Fangueiro, David Duarte, Elisabeth Cabral, Fernanda Vasconcelos, Ernesto |
Palavras-chave: | nitrogen carbon stabilization sewage sludge mineralization |
Data: | 2011 |
Editora: | SCAP |
Citação: | "Revista de Ciências Agrárias". ISSN 0871-018x. 34 (2) (2011) 131-140 |
Resumo: | This work aims to evaluate the N and C mineralization in a Haplic Arenosol amended with 3 different sewage sludge: mixture of primary and secondary sewage sludge (MSS), anaerobically digested sewage sludge (DSS) and anaerobically digested sewage sludge treated with quicklime (LimeDSS). Two aerobic incubations, one to follow N mineralization and the other one to assess CO2 emissions, were performed during 140 days. MSS promoted soil N immobilization during the first days of incubation and higher CO2 emissions (46% of the applied C was lost), consequence of a high content of non-stabilized organic matter. In DSS there was nitrogen net mineralization but only 17% of the applied carbon was mineralized, showing that anaerobic digestion stabilized the sludge organic matter. Sewage sludge treatment with quicklime reduced its NH4+ content, but enhanced carbon (40%) and nitrogen (39.2%) mineralization after soil application. Anaerobic digested sewage sludge (DSS) seems to be the most interesting treatment, since it ensured a high level of available N to plants and a great contribution to C sequestra-tion in soil. |
Peer review: | yes |
URI: | http://hdl.handle.net/10400.5/5005 |
ISSN: | 0871-018x |
Aparece nas colecções: | DCEB - Artigos de Revistas |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
REP-F.cabra, E.Vasconcelos,E.Duarte-v34n2a12.pdf | 303,52 kB | Adobe PDF | Ver/Abrir |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.