Journal
DESALINATION AND WATER TREATMENT
Volume 260, Issue -, Pages 161-168Publisher
DESALINATION PUBL
DOI: 10.5004/dwt.2022.28425
Keywords
Methylene blue; Dye removal; Adsorption; Activated carbon; Low-cost adsorbent
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Funding
- Universiti Malaysia Perlis (UniMAP) [9001-00630]
- Centre of Excellence, Water Research and Environmental Sustainability Growth (WAREG), UniMAP
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In this study, orange peel was used as a low-cost adsorbent for the adsorption of methylene blue from aqueous solution. The results showed that a high level of color removal from dye wastewater could be achieved within a short time using orange peel as an adsorbent, suggesting its potential application in industrial wastewater treatment.
A vast amount of dye effluent is continually released into the water, posing a significant hazard to the natural environment and human health. This study aims to investigate the adsorption of methylene blue from an aqueous solution using orange peel as activated carbon. To comprehend the adsorption behavior, the influences of adsorbent dose (0.1-0.8 g), starting dye concentration (10-80 mg/L), and contact duration (10-80 min) were investigated. Fourier-transform infrared spectroscopy was used to recognize the functional group in orange peel. A non-linear pseudo-first-order reaction could describe the adsorption process. The process was best fitted with the Langmuir isotherm than the Freundlich isotherm. The results obtained were a high level of color removal achieved within a short time which was 50 min, and orange peel held as a potential low-cost adsorbent for dye removal from industrial wastewater.
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