Jurnal Rekayasa Kimia & Lingkungan
Vol 10, No 1 (2014): Jurnal Rekayasa Kimia & Lingkungan

Kinetics of Phenol Degradation in Aqueous Solution Oxidized under Low Frequency Ultrasonic Irradiation

Marwan Marwan (Reaction Engineering and Catalysis Laboratory, Chemical Engineering Department, Syiah Kuala University, Darussalam, Banda Aceh 23111)

Article Info

Publish Date
01 Jun 2014

Abstract

Phenol is categorized as a refractory pollutant and its presence in water stream is strictly limited according to the government regulation. The present study investigated the degra-dation of phenol in aqueous solution by the effect of ultrasound. The process took place in a 500 ml glass reactor equipped with magnetic stirring and irradiated by low frequency (28 kHz) ultrasound from a horn type probe. Ultrasonic irradiation was found to enhance oxidation rates at ambient conditions, compared to other approaches. Optimum conditions were observed at a stirring speed of 400 rpm and temperature of 30 C in acidic solution. It was revealed that the phenol degradation was the first order kinetics with respect to phenol. A low value of the activation energy 6.04 kcal/mol suggested that diffusional steps were rate determining during the phenol decomposition. It also confirmed that phenol was mostly degraded in the film region and less occurred in the bulk solution.

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Journal Info
Jurnal Rekayasa Kimia & Lingkungan
Website

Abbrev

RKL

Publisher

Universitas Syiah Kuala

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Description

The Journal of Chemical Engineering and Environment is an open access journal that publishes papers on chemical engineering and environmental engineering. The following topics are included in these sciences: a. Food and biochemical engineering b. Catalytic reaction engineering c. Clean energy ...