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Organic dye adsorption on activated carbon derived from solid waste

Ahmad, Ashfaq A. and Idris, Azni and Hameed, Bassim H. (2013) Organic dye adsorption on activated carbon derived from solid waste. Desalination and Water Treatment, 51 (13-15). pp. 2554-2563. ISSN 1944-3994; ESSN: 1944-3986

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Activated carbon was prepared through a chemical activation of bamboo waste precursor (BMAC) using phosphoric acid as the activating agent at 500°C for 2 h. Batch adsorption studies were carried out for the adsorption of C.I. Reactive Black 5 (RB5) onto the BMAC. The effect of various experimental parameters such as initial dye concentration (50–500 mg/L), contact time (0–32 h), pH (2–12), and temperature (30–50°C) were investigated. Equilibrium data were found to be very well represented by the Freundlich isotherm and a pseudo-second-order model was found to explain the kinetics of RB5 adsorption more effectively. The mechanism of the adsorption process was determined by the intraparticle diffusion model. Thermodynamic parameters such as standard enthalpy (ΔH°), standard entropy (ΔS°), standard free energy (ΔG°), and activation energy were determined. The results indicated that BMAC is a suitable adsorbent material for adsorption of reactive dye from aqueous solutions.

Item Type:Article
Keyword:Bamboo waste; Activated carbon; C.I. Reactive Black 5; Isotherm; Kinetics
Faculty or Institute:Faculty of Engineering
Publisher:Taylor & Francis
DOI Number:10.1080/19443994.2012.749019
ID Code:28799
Deposited By: Nabilah Mustapa
Deposited On:27 Apr 2015 14:24
Last Modified:17 Sep 2015 15:22

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