Ultrasonically enhanced electrochemical oxidation of ibuprofen

Binota Thokchom; Kyungho Kim; Jeonghyuk Park; Jeehyeong Khim

doi:10.1016/j.ultsonch.2014.04.019

Ultrasonically enhanced electrochemical oxidation of ibuprofen

Ultrason Sonochem. 2015 Jan:22:429-36. doi: 10.1016/j.ultsonch.2014.04.019. Epub 2014 May 11.

Authors

Binota Thokchom¹, Kyungho Kim¹, Jeonghyuk Park¹, Jeehyeong Khim²

Affiliations

¹ School of Civil, Environmental and Architectural Engineering, Korea University, 5-ga, Anam-dong, Seongbuk-gu, Seoul 136-701, South Korea.
² School of Civil, Environmental and Architectural Engineering, Korea University, 5-ga, Anam-dong, Seongbuk-gu, Seoul 136-701, South Korea. Electronic address: hyeong@korea.ac.kr.

PMID: 24844440
DOI: 10.1016/j.ultsonch.2014.04.019

Abstract

A hybrid advanced oxidation process combining sonochemistry (US) and electrochemistry (EC) for the batch scale degradation of ibuprofen was developed. The performance of this hybrid reactor system was evaluated by quantifying on the degradation of ibuprofen under the variation in electrolytes, frequency, applied voltage, ultrasonic power density and temperature in aqueous solutions with a platinum electrode. Among the methods examined (US, EC and US/EC), the hybrid method US/EC resulted 89.32%, 81.85% and 88.7% degradations while using NaOH, H2SO4 and deionized water (DI), respectively, with a constant electrical voltages of 30V, an ultrasound frequency of 1000kHz, and a power density of 100WL(-1) at 298K in 1h. The degradation was established to follow pseudo first order kinetics. In addition, energy consumption and energy efficiencies were also calculated. The probable mechanism for the anodic oxidation of ibuprofen at a platinum electrode was also postulated.

Keywords: Electrolysis; Ibuprofen; Pseudo first-order kinetics; Sonoelectrolysis; Sonolysis.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Electrochemistry
Ibuprofen / chemistry*
Temperature
Ultrasonics*

Substances

Ibuprofen