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

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

doi:10.4028/www.scientific.net/AMM.754-755.950

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 754-755Adsorptive Removal of Ni2+ from Aqueous Solution...

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

Abstract:

An attempt was made to study the potential of rice husk as an alternative cheap precursor for activated carbon to remove Ni²⁺ from aqueous solution. Rice husk was treated chemically (with NaOH) and physically (carbonization) to prepare rice husk based activated carbon (RHAC). The textural properties of RHAC, i.e. surface area (255 m²/g) and pore volume (0.17 cm²/g), were determined by N₂ adsorption using Brunauer-Emmett-Teller (BET) surface analyzer. RHAC was also characterized for its morphology and its elemental compositions. The adsorption studies for the removal of Ni²⁺ from aqueous solution were carried out using different dosage of RHAC as adsorbent as a function of varied contact time. The concentration of Ni²⁺ was determined by atomic absorption spectrometer (AAS). The results obtained from adsorption studies indicate good potential of rice husk as a cheap precursor to produce activated carbon for the removal of Ni²⁺ from aqueous solution. The equilibrium data from adsorption studies fitted well the of Langmuir and Freundlich isotherm models.

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Periodical:

Applied Mechanics and Materials (Volumes 754-755)

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950-954

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.754-755.950

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Online since:

April 2015

Authors:

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

Keywords:

Activated Carbon, Metal Adsorption, Porous Carbon, Rice Husk, Wastewater

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