Yusuf, L. A. , Ertekin, Z. , Fletcher, S. and Symes, M. D. (2024) Enhanced ultrasonic degradation of methylene blue using a catalyst-free dual-frequency treatment. Ultrasonics Sonochemistry, (doi: 10.1016/j.ultsonch.2024.106792) (In Press)
![[img]](https://eprints.gla.ac.uk/style/images/fileicons/text.png) |
Text
317932.pdf - Accepted Version Available under License Creative Commons Attribution. 895kB |
Abstract
Methylene blue is one of the most common pollutants found in wastewater, primarily due to its widespread use in the dye industry. Consequently, it is imperative to explore environmentally friendly and efficient methods for degrading this pollutant into non-toxic byproducts. While ultrasonic degradation methods in combination with additives or catalysts have proven effective, the added additives or catalysts may inadvertently contribute to secondary pollution. Moreover, the preparation of these catalysts imposes an additional burden in terms of effort and cost. To address these issues, this paper introduces a catalyst-free dual-frequency ultrasound degradation approach for methylene blue. The sonochemical quality of the cavitation bubbles is improved using this technique because the bulk solution is populated with two types of bubbles, whose mean sizes are determined by the dual ultrasound frequencies. The findings demonstrate that, under identical acoustic power density conditions, dual-frequency ultrasound consistently outperforms single-frequency modes across all investigated parameters. Furthermore, the larger the difference between the dual frequencies used, the more effective the degradation of methylene blue. Finally, after just 20 min of sonication, a degradation efficiency of 91 % was achieved with dual frequencies of 20 and 80 kHz at an acoustic power density of 209.63 ± 6.94 W/L. Consequently, this technique offers an environmentally friendly, catalyst-free, and highly effective method for degrading methylene blue.
| Item Type: | Articles |
|---|---|
| Keywords: | Methylene blue, ultrasonic degradation, sonication, cavitation, acoustic devices. |
| Status: | In Press |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Ertekin, Dr Zeliha and Symes, Professor Mark and Yusuf, Dr Lukman and Fletcher, Shaun |
| Creator Roles: | Yusuf, L. A.Conceptualization, Data curation, Investigation, Methodology, Writing – original draft Ertekin, Z.Investigation, Methodology, Writing – review and editing Fletcher, S.Investigation, Methodology Symes, M. D.Conceptualization, Supervision, Writing – review and editing |
| Authors: | Yusuf, L. A., Ertekin, Z., Fletcher, S., and Symes, M. D. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Ultrasonics Sonochemistry |
| Publisher: | Elsevier |
| ISSN: | 1350-4177 |
| ISSN (Online): | 1873-2828 |
| Published Online: | 03 February 2024 |
| Copyright Holders: | Copyright © 2024 The Authors |
| First Published: | First published in Ultrasonics Sonochemistry 2024 |
| Publisher Policy: | Reproduced under a Creative Commons License |
University Staff: Request a correction | Enlighten Editors: Update this record
Funder and Project Information
Funder and Project Information