Adsorption of Direct Red 80 Dye from Solution by Sugarcane Bagasse and Modified Sugarcane Bagasse as Adsorbents

Abstract:

The sugarcane bagasse and modified sugarcane bagasse with 1.0 M H₂SO₄ were used as adsorbents for removal of the direct red 80 in batch adsorption process. The effect on the initial concentration of the direct red 80, at 215.8 - 1028.9 mg/L, was thoroughly investigated in batch adsorption system. It was fount that the point of zero charge of sugarcane bagasse and modified sugarcane bagasse were pH 4.9 and 2.0, respectively. The adsorption capacity increased with initial concentration of direct red 80. The experimental results showed that adsorption capacity onto 1.0 g of sugarcane bagasse and modified sugarcane bagasse for direct red 80 initial concentration 1,028.9 mg/L were 4.2 and 28.9 mg/g, respectively. The Langmuir and Freundlich adsorption isotherms were applied to describe the direct red 80 uptake, which could be described by Langmuir isotherm onto both adsorbents.

• Periodical: Materials Science Forum (Volume 872)
• Pages: 175-180
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.872.175
• Online since: September 2016
• Authors: Phatthraporn En-Oon, Ponsuparat Sansunon, Kowit Piyamongkala*
• Keywords: Adsorption, Direct Red 80, Modified Sugarcane Bagasse

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