Performance Evaluation of Electrochemical Process for the Removal of Syntan by using Vertical Rotating Aluminium Electrodes

IJEP 42(13): 1572-1577 : Vol. 42 Issue. 13 (Conference 2022)

A. Kumar and D. Basu*

Motilal Nehru National Institute of Technology Allahabad, Prayagraj – 211 004, Uttar Pradesh, India


The focus of the current study is on phenolic syntan removal from synthetic industrial effluent utilising a batch mode electrochemical (EC) technique with vertical rotating cylindrical aluminium electrodes. The impact of operating parameters, that is rotational speed of electrode (RSE), current intensity, electrolysis time and initial pH on the removal of phenolic syntan was investigated to compare the specific energy consumption (SEC) in each operating condition. It was found that when electrolysis time and current intensity increased, the COD, syntan removal and SEC value also increased. In contrast, COD and syntan removal decreased beyond the optimum pH value. In the case of RSE, it was noted that an increase in RSE resulted in increased COD and syntan removal. However, a rise in RSE above the optimal level revealed a fall in the elimination of COD and syntan. The optimum operating condition was obtained for the case of maximum COD removal efficiency (75%), corresponding to current: 4A, initial pH: 4, electrolysis time: 60 min and RSE: 70 rpm. In comparison to the absorbance value in the influent, the effluent absorbance at optimum conditions was found to decrease (-3.975), indicating syntan removal. The peak identified through the FTIR analysis of the influent sample was in the region between 1443 -1572 C/m and 1173 C/m, corresponding to the C=C stretching and C-H bending. This indicated presence of aromatic ring in syntan. Above mentioned peak was not identifiable in the treated sample showing the removal of syntan from synthetic wastewater. The FTIR analysis also indicated the conversion of syntan into the lower molecular weight by-product, that is quinone. The SEC calculated at the optimum working condition was found to be 24 KWh/m3.


Removal, Syntan, Electrochemical, Rotating aluminium electrode


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