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Effect of ultrasound pre-treatment on adsorbent in dye adsorption compared with ultrasound simultaneous adsorption


Citation

Low, Suk Khe and Tan, Mei Ching and Chin, Nyuk Ling (2018) Effect of ultrasound pre-treatment on adsorbent in dye adsorption compared with ultrasound simultaneous adsorption. Ultrasonics Sonochemistry, 48. 64 - 70. ISSN 1350-4177; ESSN: 1873-2828

Abstract

Ultrasound was applied simultaneously with adsorption process in most of the previous studies. However, this method is not practical to treat huge amounts of coloured wastewater effluent. In this study, the efficiency of ultrasound pre-treated peanut husk powder at different power levels (1.5–3.5 W) in dye adsorption with several conditions of initial dye concentration (20–100 mg/L), contact time (0.5–5 h), solution pH (2–8), and dosage (0.1–0.3 g) was studied and compared with ultrasound simultaneous adsorption process and the control. Adsorption efficiency of indirect ultrasound pre-treated peanut husk powder has increased 25.78%, 13.64% and 1.5% compared with the control, ultrasound simultaneous adsorption and direct ultrasound pre-treated sample respectively at 60 mg/L of initial dye concentration. Indirect ultrasound pre-treated sample at 3.5 W has achieved the highest adsorption efficiency of 89.96% at solution pH 8 and 94.83% at 0.3 g dose for 3 h. The surface feature and textural properties of samples were characterized by using scanning electron microscopy and surface characterization analyser. The result indicated that more porous structure was created on the ultrasound pre-treated sample at increasing power levels.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.1016/j.ultsonch.2018.05.024
Publisher: Elsevier
Keywords: Ultrasound; Adsorption; Peanut husk powder; Dye
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 16 Jun 2020 04:07
Last Modified: 16 Jun 2020 04:07
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1063/1.481883410.1016/j.ultsonch.2018.05.024
URI: http://psasir.upm.edu.my/id/eprint/72461
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