Avda. de Elvas
Avda. de Elvas
Dominguez J.R.,Avda. de Elvas |
Munoz M.J.,Avda. de Elvas |
Palo P.,Avda. de Elvas |
Gonzalez T.,Avda. de Elvas |
And 2 more authors.
International Journal of Energy and Environmental Engineering | Year: 2014
Degradation rates and removal efficiencies of different parabens, namely, methylparaben, ethylparaben, propylparaben, and butylparaben using H2O2/Fe2+ advanced oxidation process are studied in this work. With the aim of optimizing the removal of parabens from waters through the Fenton process, a factorial central composite orthogonal and rotatable design (FCCORD) was used. H2O2 and Fe2+ ion initial concentrations were selected as independent variables. The experimental procedure planned according to the FCCORD makes it possible to optimize the removal. The occurrence of interactions between these two variables can also be analyzed with the aid of the experimental design. Fenton process provides conversion efficiencies comprising between 85 and 94 % after a reaction time of 48 h, which reveals the appropriateness of this procedure for the removal of parabens from aqueous matrices. © 2014 The Author(s).
Miranda F.J.,Avda. de Elvas |
Chamorro A.,Avda. de Elvas |
Rubio S.,Avda. de Elvas |
Morgado V.,Avda. de Elvas
Journal of Internet Banking and Commerce | Year: 2013
Social networks have become an interesting marketing tool for the banking sector to manage contact and interaction with their actual and potential customers. The purpose of this study was to evaluate the use of Facebook by the top 200 international banks. Our paper proposes a new instrument called Facebook Assessment Index (FAI), which uses three categories to evaluate the essential information on a firm's Facebook page: popularity, interactivity, and content. Only 60% of the banks tested had official Facebook page. The results show large differences between them in the three dimensions of FAI and a great improvement opportunity in the use of Facebook as a marketing tool in the sector. These results not only serve to create a ranking of banks, but also can be used by bank manager as a benchmarking analysis of best Facebook pages, suggesting improvements to their current Facebook pages. © F. J. Miranda, A. Chamorro, S. Rubio & V. Morgado, 2013.