Adsorption of anionic methyl orange dye on hybrid spherical silica in fixed-bed column

Salah Hassan Boushara, R. and Johari, K. and Musfirah Mustafa, N. (2024) Adsorption of anionic methyl orange dye on hybrid spherical silica in fixed-bed column. In: UNSPECIFIED.

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Abstract

The textile sector is recognized for contributing the most dye residue, which is one of today's environmental challenges. It is a risky technique since wastewater includes toxins that can damage water sources and endanger human health and aquatic life. As a result, wastewater must be treated before disposal. There are numerous methods for removing dyes from wastewater, which categorized into chemical treatments, physical and biological procedures. This study chose the continuous adsorption approach, which falls under the physical method since it is simple and effective. The oil-in-water emulsion was used to synthesize spherical silica (SSi) adsorbent in order to effectively remove and remediate one of the water-soluble anionic dyes, methyl orange dye (MO). The effect of influent concentration (10 to 50 ppm) and bed height (1.0 to 2.0 cm) on the continuous process was investigated. The breakthrough time exhibited an increase as the dye concentration decreased for all solutions that were examined. The removal efficiency of MO increased as the bed height increased, which can be attributed to the longer contact time between the MO dye and the adsorbent. The Thomas model exhibited a more favorable level of conformity to the data than Adams-Bohart and Yoon-Nelson. According to Thomas ' model, the maximum adsorption capacity (qo) increased as bed height decreased, and concentration increased. Moreover, Correlation values ranged from 0.882 to 0.979. Therefore, spherical silica adsorbent has the highest methyl orange dye adsorption capability at a bed height of 2.0 cm and concentration of 50 ppm. © 2024 Elsevier Ltd. All rights reserved.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 0; Conference of 2nd International Symposium on Advanced Functional Materials, ISAFM 2023 ; Conference Date: 16 February 2023; Conference Code:198000
Uncontrolled Keywords: Azo dyes; Citrus fruits; Emulsification; Emulsions; Silica; Spheres; Wastewater disposal; Wastewater treatment, Anionic dye; Bed height; Environmental challenges; Fixed bed columns; Methyl Orange; Methyl orange dyes; Silica adsorbent; Spherical silica; Textile sector; Thomas models, Adsorption
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 04 Jun 2024 14:19
Last Modified: 04 Jun 2024 14:19
URI: https://khub.utp.edu.my/scholars/id/eprint/20119

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