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Research PapersNo Access

ADSORPTION AND KINETIC STUDY ON Sn²⁺ REMOVAL USING MODIFIED CARBON NANOTUBE AND MAGNETIC BIOCHAR

Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur 56000, Malaysia

Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia

Corresponding author.

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Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur 56000, Malaysia

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Department of Petroleum and Chemical Engineering, Faculty of Engineering, Institut Teknologi Brunei, Tungku Gadong, P. O. Box 2909, Brunei Darussalam

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Malaysia–Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Semarak, 54100 Kuala Lumpur, Malaysia

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N. S. JAYAKUMAR

Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia

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Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur 56000, Malaysia

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Department of Chemical and Petroleum Engineering, Faculty of Engineering, UCSI University, Kuala Lumpur 56000, Malaysia

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https://doi.org/10.1142/S0219581X13500440Cited by:18 (Source: Crossref)

Abstract

The effectiveness of stannum (Sn²⁺) removal from aqueous solution by using magnetic biochar and functionalized multiwalled carbon nanotube (FMWCNT) was investigated. The effect of various factors, namely pH, adsorbent dosage, agitation speed and contact time was statistically studied through analysis of variance (ANOVA). Statistical analysis revealed that the optimum conditions for the highest removal of Sn²⁺ are at pH 5, dosage 0.1 g with agitation speed and time of 100 rpm and 90 min, respectively. At the initial concentration of 0.1 mg/L, the removal efficiency of Sn²⁺ using FMWCNTs was 93% and 85% with magnetic biochar. The Langmuir and Freundlich constant for both FMWCNTs and magnetic biochar were 13.397 L/mg, 18.634 L/mg and 17.719 L/mg, 25.204 L/mg, respectively. Hence, results prove that FMWCNTs are a better adsorbent with a higher adsorption capacity compared to magnetic biochar. Adsorption kinetic obeyed pseudo-second-order.

Keywords:

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Vol. 12, No. 06

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History

Received 2 April 2013

Accepted 23 December 2013

Published: 5 February 2014

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