Adsorptive Removal of Ni2+ from Aqueous Solution onto Rice Husk-Based Activated Carbon

Mohd Faisal Taha; Anis Shuib; Maizatul Shima Shaharun; Azry Borhan

doi:10.4028/www.scientific.net/AMM.625.893

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 625Adsorptive Removal of Ni2+ from Aqueous Solution...

Adsorptive Removal of Ni²⁺ from Aqueous Solution onto Rice Husk-Based Activated Carbon

Abstract:

The potential of rice husk-based activated carbon (RHAC) as an alternative low-cost adsorbent for the removal of Ni²⁺ from aqueous solution was studied. RHAC was prepared via chemical treatment using NaOH followed by the carbonization process. The textural properties of rice husk-based activated carbon, i.e. surface area (253 m²/g) and pore volume (0.17 cm²/g), were determined by N₂ adsorption. The adsorption studies to remove Ni²⁺ from aqueous solution using RHAC were carried out at a fixed initial concentration of Ni²⁺ (150 ppm) with varying RHAC as a function of contact time at room temperature. The concentration of Ni²⁺ was determined by atomic absorption spectrophotometer (AAS). The maximum removal of Ni²⁺ was increased from 40% to 89% when the amount of RHAC was increased from 0.1 g to 0.5 g. The isotherm and kinetic analyses showed that equilibrium data of adsorption studies fitted well Langmuir, Freundlich and second order kinetic models.

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Periodical:

Applied Mechanics and Materials (Volume 625)

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893-896

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.625.893

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Online since:

September 2014

Authors:

Mohd Faisal Taha, Anis Shuib*, Maizatul Shima Shaharun, Azry Borhan

Keywords:

Activated Carbon, Metal Ion Adsorption, Rice Husk, Wastewater

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