Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes

N. Bensalah, B. Louhichi, Ahmed Abdel-Wahab

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this work, the electrochemical oxidation of succinic acid on boron-doped diamond (BDD) anodes was investigated. Voltammetric study had shown that no peaks appeared in the region of electrolyte stability which indicates that succinic acid oxidation can take place at a potential close to the potential region of electrolyte oxidation. Galvanostatic electrolyses achieved total chemical oxygen demand (COD) removals and high mineralization yields under different operating conditions (initial COD, current density and nature of supporting electrolyte). Oxalic, glycolic and formic acids were the main intermediates detected during anodic oxidation of succinic acid on BDD electrode and carbon dioxide as the final product. The mean oxidation state of carbon reached the value of 4 at the end of electrolysis which is indicative of mineralization of almost all organics present in aqueous solution. The exponential profile of COD versus specific electrical charge has shown that mass transfer is the limiting factor for the kinetics of electrochemical process. A simple mechanism was proposed for the mineralization of succinic acid. First, hydroxyl radicals attack of succinic acid leading to formation of glycolic, glyoxylic, fumaric and maleic acids. Then, theses acids undergo rapid and non-selective oxidation by hydroxyl radicals to be transformed into oxalic and formic acids which leads to further oxidation steps to mineralize these acids into carbon dioxide and water.

Original languageEnglish
Pages (from-to)135-143
Number of pages9
JournalInternational Journal of Environmental Science and Technology
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2012
Externally publishedYes

Fingerprint

Diamond
Boron
Electrochemical oxidation
Succinic Acid
succinic acid
boron
diamond
aqueous solutions
Diamonds
Anodes
Electrodes
Biological Oxygen Demand Analysis
aqueous solution
oxidation
Chemical oxygen demand
Formates
Oxidation
Acids
acid
Electrolytes

Keywords

  • Anodic oxidation
  • Carboxylic acids
  • Chemical oxygen demand
  • Hydroxyl radicals
  • Mineralization
  • Total organic carbon

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes. / Bensalah, N.; Louhichi, B.; Abdel-Wahab, Ahmed.

In: International Journal of Environmental Science and Technology, Vol. 9, No. 1, 01.01.2012, p. 135-143.

Research output: Contribution to journalArticle

@article{32c74aa4e8de48ddbdd27b8c8dcbc416,
title = "Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes",
abstract = "In this work, the electrochemical oxidation of succinic acid on boron-doped diamond (BDD) anodes was investigated. Voltammetric study had shown that no peaks appeared in the region of electrolyte stability which indicates that succinic acid oxidation can take place at a potential close to the potential region of electrolyte oxidation. Galvanostatic electrolyses achieved total chemical oxygen demand (COD) removals and high mineralization yields under different operating conditions (initial COD, current density and nature of supporting electrolyte). Oxalic, glycolic and formic acids were the main intermediates detected during anodic oxidation of succinic acid on BDD electrode and carbon dioxide as the final product. The mean oxidation state of carbon reached the value of 4 at the end of electrolysis which is indicative of mineralization of almost all organics present in aqueous solution. The exponential profile of COD versus specific electrical charge has shown that mass transfer is the limiting factor for the kinetics of electrochemical process. A simple mechanism was proposed for the mineralization of succinic acid. First, hydroxyl radicals attack of succinic acid leading to formation of glycolic, glyoxylic, fumaric and maleic acids. Then, theses acids undergo rapid and non-selective oxidation by hydroxyl radicals to be transformed into oxalic and formic acids which leads to further oxidation steps to mineralize these acids into carbon dioxide and water.",
keywords = "Anodic oxidation, Carboxylic acids, Chemical oxygen demand, Hydroxyl radicals, Mineralization, Total organic carbon",
author = "N. Bensalah and B. Louhichi and Ahmed Abdel-Wahab",
year = "2012",
month = "1",
day = "1",
doi = "10.1007/s13762-011-0007-5",
language = "English",
volume = "9",
pages = "135--143",
journal = "International Journal of Environmental Science and Technology",
issn = "1735-1472",
publisher = "CEERS",
number = "1",

}

TY - JOUR

T1 - Electrochemical oxidation of succinic acid in aqueous solutions using boron doped diamond anodes

AU - Bensalah, N.

AU - Louhichi, B.

AU - Abdel-Wahab, Ahmed

PY - 2012/1/1

Y1 - 2012/1/1

N2 - In this work, the electrochemical oxidation of succinic acid on boron-doped diamond (BDD) anodes was investigated. Voltammetric study had shown that no peaks appeared in the region of electrolyte stability which indicates that succinic acid oxidation can take place at a potential close to the potential region of electrolyte oxidation. Galvanostatic electrolyses achieved total chemical oxygen demand (COD) removals and high mineralization yields under different operating conditions (initial COD, current density and nature of supporting electrolyte). Oxalic, glycolic and formic acids were the main intermediates detected during anodic oxidation of succinic acid on BDD electrode and carbon dioxide as the final product. The mean oxidation state of carbon reached the value of 4 at the end of electrolysis which is indicative of mineralization of almost all organics present in aqueous solution. The exponential profile of COD versus specific electrical charge has shown that mass transfer is the limiting factor for the kinetics of electrochemical process. A simple mechanism was proposed for the mineralization of succinic acid. First, hydroxyl radicals attack of succinic acid leading to formation of glycolic, glyoxylic, fumaric and maleic acids. Then, theses acids undergo rapid and non-selective oxidation by hydroxyl radicals to be transformed into oxalic and formic acids which leads to further oxidation steps to mineralize these acids into carbon dioxide and water.

AB - In this work, the electrochemical oxidation of succinic acid on boron-doped diamond (BDD) anodes was investigated. Voltammetric study had shown that no peaks appeared in the region of electrolyte stability which indicates that succinic acid oxidation can take place at a potential close to the potential region of electrolyte oxidation. Galvanostatic electrolyses achieved total chemical oxygen demand (COD) removals and high mineralization yields under different operating conditions (initial COD, current density and nature of supporting electrolyte). Oxalic, glycolic and formic acids were the main intermediates detected during anodic oxidation of succinic acid on BDD electrode and carbon dioxide as the final product. The mean oxidation state of carbon reached the value of 4 at the end of electrolysis which is indicative of mineralization of almost all organics present in aqueous solution. The exponential profile of COD versus specific electrical charge has shown that mass transfer is the limiting factor for the kinetics of electrochemical process. A simple mechanism was proposed for the mineralization of succinic acid. First, hydroxyl radicals attack of succinic acid leading to formation of glycolic, glyoxylic, fumaric and maleic acids. Then, theses acids undergo rapid and non-selective oxidation by hydroxyl radicals to be transformed into oxalic and formic acids which leads to further oxidation steps to mineralize these acids into carbon dioxide and water.

KW - Anodic oxidation

KW - Carboxylic acids

KW - Chemical oxygen demand

KW - Hydroxyl radicals

KW - Mineralization

KW - Total organic carbon

UR - http://www.scopus.com/inward/record.url?scp=84857260111&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84857260111&partnerID=8YFLogxK

U2 - 10.1007/s13762-011-0007-5

DO - 10.1007/s13762-011-0007-5

M3 - Article

VL - 9

SP - 135

EP - 143

JO - International Journal of Environmental Science and Technology

JF - International Journal of Environmental Science and Technology

SN - 1735-1472

IS - 1

ER -