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Alkali and Magnetite-Modified Fly Ash for Adsorption of Naphthol Blue Black Dye: Characterization, Performance, Isothermal and Kinetic Studies

Aprilina Purbasari1, Restu Kusumawardani1, Dessy Ariyanti1, Noer Abyor Handayani1
Affiliation: 
1 Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Jl. Prof. Jacub Rais, Kampus Tembalang, Semarang 50275, Indonesia aprilina.purbasari@che.undip.ac.id
DOI: 
https://doi.org/
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Keywords:

Abstract: 
Wastewater containing dyes at certain levels can be harmful to the environment. Removal of dye pollutants in wastewater can be done by the adsorption method. Fly ash, solid waste from coal combustion, can be utilized as a dye adsorbent. Modification of fly ash with alkali (NaOH solution) and magnetite (Fe3O4) can increase the adsorption capacity and facilitate separation. In this paper, fly ash was modified with alkali and magnetite and then applied as an adsorbent for naphthol blue black (NBB) dye. The highest efficiency of NBB dye adsorption by alkali and magnetite-modified fly ash was 99.17%. Adsorption followed the Freundlich isotherm model and the pseudo-second-order kinetics model.
References: 

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