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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/6297

Title: The influence of Cu, Fe, Ni, Pb and Zn on gum formation in the Brazilian automotive gasoline
Other Titles: Fuel Processing Technology
Authors: Teixeira, Leonardo Sena Gomes
Souza, Jurema de Castro
Santos, Hilda Costa dos
Pontes, Luiz Antônio Magalhães
Guimarães, Paulo R. B.
Vitor Sobrinho, Eledir
Vianna, Regina Ferreira
Keywords: Metal ions;Gasoline;Gum;Variance analysis
Issue Date: 2006
Publisher: Fuel Processing Technology
Abstract: In this research work, the effect of different concentrations of copper, iron, lead, zinc and nickel ions on the tendency for gum formation in gasohol fuel is investigated. For that purpose, a gasohol sample has been doped with these five metals ions at concentration levels of 0.25, 1.0, 2.0 and 3.0 μg ml−1. Washed gum content tests have been carried out using ASTM D 381 on samples stored for 7, 14, and 28 days. The results show that gum formation is strongly affected by Cu and Fe, with a much weaker effect from Ni and Zn, and an almost negligible effect from Pb. A variance analysis (ANOVA) of the experimental results shows that an increase in metal concentration strongly increases the rate of gum formation for all metal ions investigated, particularly Cu and Fe, while an increase in storage time has only a much weaker effect, being negligible for Zn.
Description: RESTRITO
URI: http://www.repositorio.ufba.br/ri/handle/ri/6297
ISSN: 0378-3820
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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