Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/59993
Type: Artigo de periódico
Title: Incorporation of mineral phosphorus and potassium on leather waste (collagen): A new NcollagenPK-fertilizer with slow liberation
Author: Nogueira, FGE
do Prado, NT
Oliveira, LCA
Bastos, ARR
Lopes, JH
de Carvalho, JG
Abstract: The feasibility of using a solid waste (rich in nitrogen) from the leather industry, after chromium extraction, as adsorbent for P and K, for possible utilization as NPK fertilizer was evaluated. The materials, with and without the addition of P and K, were characterized by chemical analyses, infrared spectroscopy, EDS (energy dispersive X-ray spectrometry) and SEM (scanning electronic microscopy). Langmuir and Freundlich equations were used for analyzing the experimental data, which showed a better fit to the Freundlich model, thus suggesting a multilayer adsorption process on the surface of the adsorbent. A preliminary test in greenhouse demonstrates that the P and K incorporation on the matrix rich in nitrogen (collagen) is a interesting alternative to use such material as NPK fertilizer. The application of NcollagenPK formulations, as a source of nutrients for the growth of rice plants, showed promising agronomic results. (C) 2009 Elsevier B.V. All rights reserved.
Subject: Leather waste
Adsorption
Macronutrients
Chromium
NcollagenPK formulation
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.jhazmat.2009.11.040
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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