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Journal
2012 | 10 | 5 | 1183-1189
Article title

Application of BDD thin film electrode for electrochemical decomposition of heterogeneous aromatic compounds

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EN
Abstracts
EN
The aim of the presented study is to investigate the applicability of electrochemical oxidation of aromatic compounds containing heteroatoms, e.g. waste from production of pesticides or pharmaceutics, at a borondoped diamond (BDD) electrode. The BDD electrodes were synthesized by microwave plasma enhanced chemical vapour deposition (MW PE CVD). Investigation of the electrode surface by optical microscopy and scanning electron microscopy (SEM) confirmed that the synthesized layer was continuous and formed a densely packed grain structure with an average roughness of less than 0:5 μm. The influence of important electrochemical parameters: current density, kind of reactor, pH or mixing operation, on the efficiency of the oxidation was investigated. The fouling of electrode’s surface caused by the deposition of organic material was observed during CV and galvanostatic experiments. At low current density the oxidation rate constant k was low, but the current efficiency was relatively high. The BDD can be used successfully to remove heterogeneous aromatic compounds existing either as molecules or cations. During 4 h of electrolysis 95% of aromatic compounds were electrochemically decomposed to mineral forms. It was observed that the influence of the initial pH on mineralization was marginal.
Publisher

Journal
Year
Volume
10
Issue
5
Pages
1183-1189
Physical description
Dates
published
1 - 10 - 2012
online
21 - 11 - 2012
Contributors
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
  • Department of Metrology and Optoelectronics, Gdańsk University of Technology, 11/12 Narutowicza Str., 80-233, Gdańsk, Poland, rbogdan@eti.pg.gda.pl
author
  • Department of Metrology and Optoelectronics, Gdańsk University of Technology, 11/12 Narutowicza Str., 80-233, Gdańsk, Poland
author
  • Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, 18 Sobieskiego Str., 80-952, Gdańsk, Poland
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-012-0058-3
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