Kinetic and Isotherm Adsorption Studies of Methylene Blue on Sulfuric Acid Treated Spent Grated Coconut (Cocos nucifera)

Khadijah Khalid; Megat Ahmad Kamal Megat Hanafiah

doi:10.4028/www.scientific.net/AMR.970.192

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Kinetic and Isotherm Adsorption Studies of Methylene Blue on Sulfuric Acid Treated Spent Grated Coconut (Cocos nucifera)

Abstract:

A new biosorbent, sulfuric acid (H₂SO₄) treated spent grated coconut (Cocus nucifera) (SSGC) showed a good ability to remove methylene blue (MB) from aqueous solutions. Equilibrium time was achieved within 300 min for all MB concentrations, and the kinetic data was best modeled by pseudo second-order. The adsorption data fitted the Langmuir isotherm model, suggesting monolayer coverage of MB over a homogeneous adsorbent surface. The experimental maximum adsorption capacity was 366.50 mg/g, obtained at 318 K, adsorbent dosage of 0.6 g/L and at pH 6. The attachment of MB on SSGC was confirmed by Fourier Transform Infrared (FTIR) spectroscopy.

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Advanced Materials Research (Volume 970)

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192-197

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https://doi.org/10.4028/www.scientific.net/AMR.970.192

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Online since:

June 2014

Authors:

Khadijah Khalid*, Megat Ahmad Kamal Megat Hanafiah

Keywords:

Adsorption, Isotherm, Kinetic, Methylene Blue, Spent Grated Coconut

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