Data/hora: 03/06/2024 02:16:06

Biblioteca(s): | Embrapa Solos.
Data corrente: | 10/09/2021
Data da última atualização: | 10/09/2021
Autoria: | COUTO, R. S. de P.; OLIVEIRA, A. F.; GUARINO, A. W. S.; PEREZ, D. V.; MARQUES, M. R. da C.
Afiliação: | RAFAEL SCHIRMER DE PAULA COUTO, UERJ; ALINE FARIA OLIVEIRA, UERJ; ALCIDES WAGNER SERPA GUARINO, UNIRIO; DANIEL VIDAL PEREZ, CNPS; MONICA REGINA DA COSTA MARQUES, UERJ.
Título: | Removal of ammonia nitrogen from distilled old landfill leachate by adsorption on raw and modified aluminosilicate.
Ano de publicação: | 2017
Fonte/Imprenta: | Environmental Technology, v. 38, n. 7, p. 816-826, 2017.
DOI: | https://doi.org/10.1080/09593330.2016.1212935
Idioma: | Inglês
Conteúdo: | This study aimed to evaluate the ammonia-nitrogen removal by aluminosilicates, using both standard solutions as pretreated landfill leachate. Three types of commercial clays and one commercial zeolite were initially tested using standard solution; however, only one clay with the best removability and the zeolite were tested with pretreated leachate. The chosen clay sorption capacity with the standard solution reached 83%, while with the pretreated leachate solution has reached 95% and zeolites have reached, respectively, a removal of 73% and 81%. For this two adsorbents? studies of equilibrium and kinetic of the sorption were also performed. The Langmuir model was more adequate to describe the ion exchange equilibrium and the sorption mechanism fit the pseudo-second-order kinetic model. Moreover, the pretreatment used on leachate proved to be essential not only for ammonium detection in solution, but also to facilitate its sorption in aluminosilicates. This alternative of ammonia?nitrogen removal also generates a product derived from treatment that can be used as agricultural feedstock in the form of fertilizer.
Palavras-Chave: | Aluminosilicates; Ammonia-nitrogen; Ion chromatography; Landfill leachate.
Thesaurus Nal: | Adsorbents.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (20727-1) - UPC - AP - DD -  -  -  - DIS