Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/37903
Título : Electrochemical attributes of soils influenced by sugarcane vinasse
Título(s) alternativo(s): Atributos eletroquímicos de solos influenciados pela vinhaça
Autor: Ribeiro, Bruno Teixeira
Lima, José Maria de
Curi, Nilton
Oliveira, Geraldo César de
Palavras-chave: Soil chemistry
Zeta potential
Soil pH
Publicador: Universidade Federal de Uberlândia
Data da publicação: Mar-2012
Referência: RIBEIRO, B. T. et al. Electrochemical attributes of soils influenced by sugarcane vinasse. Bioscience Journal, Uberlândia, v. 28, p. 25-32, Mar. 2012. Suplemento 1.
Abstract: The electrochemistry at the surface of colloidal particles in soils is related to important physical and chemical phenomena, such as flocculation and dispersion of soil particles, cation-exchange-capacity, anion adsorption, pesticides and heavy metals adsorption. Sorption of organic compounds on the surface of soil components may cause important changes on their electrochemical attributes. The vinasse has been applied in soils, mainly in sugarcane crops, as organic fertilizer. Its effects on physical, chemical and biological attributes of soils are well documented; however, little is known about the effects on electrochemical attributes. This work aimed to evaluate the effects of sugarcane vinasse on soil pH and zeta potential of the clay fraction of two Latosols (Oxisols) and an Argisol (Ultisol). The pH of soils amended with vinasse was measured in water and 1M KCl solution (ratio soil:water 1:2.5), and estimated the ∆pH (pH 1M KCl – pH in water). The zeta potential (ζ) of the clay fraction was determined by electrophoretic mobility in 0,01M NaCl solution adjusted to different pH values (2, 3, 5, 6, 7, 9 and 11), and estimated the point of zero charge (PZC) (ζ = 0). The soil pH and net charge of soils were clearly influenced by vinasse. These changes may influence important chemical and physical phenomena in soils and also help future studies involving vinasse in soils.
URI: http://www.seer.ufu.br/index.php/biosciencejournal/article/view/12499
http://repositorio.ufla.br/jspui/handle/1/37903
Idioma: en_US
Aparece nas coleções:DCS - Artigos publicados em periódicos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.