Veratric acid removal from water by electrochemical oxidation on BDD anode

2nd International Conference on Advanced Materials

Jum'H, Inshad^1 ; Abdelhay, Arwa^1 ; Telfah, Ahmad^2 ; Al-Akhras, M-Ali^3 ; Al-Kazwini, Akeel^1 ; Rosiwal, Stefan^4

German-Jordanian University, Amman

11180, Jordan^1

Leibniz-Institut für Analytische, Wissenschaften-ISAS-e.V, Dortmund

44139, Germany^2

Jordan University of Science and Technology (JUST), Irbid

22110, Jordan^3

Institute of Metals Science and Technology (WTM), Friedrich-Alexander University, Erlangen

91058, Germany^4

关键词: Advanced Oxidation Processes;    Boron doped diamond electrodes;    Chemical oxygen demand measurements;    Electrochemical treatments;    Hot-filament chemical vapor deposition;    Initial concentration;    Supporting electrolyte;    Veratric acid;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/305/1/012021/pdf
DOI  :  10.1088/1757-899X/305/1/012021

来源: IOP

【 摘 要 】

The efficiency of boron doped diamond (BDD) in the electrochemical treatment of synthetically contaminated water with veratric acid (VA), one kind of polyphenolic type compounds, is investigated in this work. A BDD electrode was practically fabricated using hot filament chemical vapor deposition (HFCVD). Later on, the BDD electrode was implemented as an anode in a batch electrolytic reactor. The effect of operating factors such as the initial concentration of VA, NaCl addition, and supporting electrolyte type (H2SO4, H3PO4and Na2SO4) was studied. The chemical oxygen demand (COD) measurements were conducted to study the VA electrolysis kinetics. The experimental data suggested that sodium sulfate was the best supporting electrolyte as the COD removal reached a percentage of 100% using 1 mmol/dm3as VA concentration. The kinetics of the COD decay of the VA electrolysis were found to obey the pseudo-first order model. Remarkably, the electrolysis process is significantly speeded up once chloride is added to the reaction. The complete COD removal was achieved in 60 minutes of treatment.