Degradação eletroquímica de benzeno, tolueno e xileno via oxidação eletroquímica utilizando eletrodo Ti/Pt
This work is directed to the treatment of organic compounds present in produced water from oil using electrochemical technology. The water produced is a residue of the petroleum industry are difficult to treat , since this corresponds to 98 % effluent from the effluent generated in the exploration o...
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| Formato: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/17764 |
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| Resumo: | This work is directed to the treatment of organic compounds present in produced water
from oil using electrochemical technology. The water produced is a residue of the
petroleum industry are difficult to treat , since this corresponds to 98 % effluent from the
effluent generated in the exploration of oil and contains various compounds such as
volatile hydrocarbons (benzene, toluene, ethylbenzene and xylene), polycyclic aromatic
hydrocarbons (PAHs), phenols, carboxylic acids and inorganic compounds. There are
several types of treatment methodologies that residue being studied, among which are the
biological processes, advanced oxidation processes (AOPs), such as electrochemical
treatments electrooxidation, electrocoagulation, electrocoagulation and eletroredution. The
electrochemical method is a method of little environmental impact because instead of
chemical reagents uses electron through reactions of oxide-reducing transforms toxic
substances into substances with less environmental impact. Thus, this paper aims to study
the electrochemical behavior and elimination of the BTX (benzene, toluene and xylene)
using electrode of Ti/Pt. For the experiment an electrochemical batch system consists of a
continuous source, anode Ti/Pt was used, applying three densities of current (1 mA/cm2,
2,5 mA/cm2 and 5 mA/cm2). The synthetic wastewater was prepared by a solution of
benzene, toluene and xylene with a concentration of 5 ppm, to evaluate the electrochemical
behavior by cyclic voltammetry and polarization curves, even before assessing the removal
of these compounds in solution by electrochemical oxidation. The behavior of each of the
compounds was evaluated by the use of electrochemical techniques indicate that each of
the compounds when evaluated by cyclic voltammetry showed partial oxidation behavior
via adsorption to the surface of the Ti/Pt electrode. The adsorption of each of the present
compounds depends on the solution concentration but there is the strong adsorption of
xylene. However, the removal was confirmed by UV-Vis, and analysis of total organic
carbon (TOC), which showed a percentage of partial oxidation (19,8 % - 99,1 % TOC
removed), confirming the electrochemical behavior already observed in voltammetry and
cyclic polarization curves |
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