Regeneration of Granular Activated Carbon Using Dual-Frequency Ultrasound

Abstract:

The saturate granular activated carbon(GAC) which adsorbed Ni²⁺ is regenerated using dual-frequency ultrasound. The individual frequency is 45KHz, 80KHz and 100KHz respectively. The experimental results show that the regeneration efficiency using dual-frequency ultrasound is better than that using single- frequency ultrasound under the same experimental condition. When the two ultrasound’s frequency is 45KHz, the regeneration efficiency is 81.03%, comparing single- frequency ultrasound it increase by 40% and it is the best in six group dual-frequency ultrasound. In conclusion, the dual-frequency ultrasound regeneration showed a possibility as an alternative to chemical and thermal regeneration of GAC.

• Periodical: Advanced Materials Research (Volumes 616-618)
• Pages: 1707-1710
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.616-618.1707
• Online since: December 2012
• Authors: Jiong Yuan Lu, San Fan Wang, Jin Feng Zhu
• Keywords: Cavitation Activity, Dual-Frequency Ultrasound, Granular Activated Carbon (GAC), Regeneration

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