Adsorption of Acid Azo Dyes from Aqueous Solution by Neem (Azadirachta indica) Leaf Powder

Chaudhuri, M. and Chan, Xuan Hui (2012) Adsorption of Acid Azo Dyes from Aqueous Solution by Neem (Azadirachta indica) Leaf Powder. In: Proceedings 2012 International Conference on Civil, Offshore and Environmental Engineering. Universiti teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia. ISBN 978-983-2271-77-2

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A novel adsorbent was prepared from Neem (Azadirachta indica) leaf and its effectiveness in adsorbing two textile acid azo dyes, Acid Red 18 and Acid Orange 7, from aqueous solution was examined. Batch adsorption test showed that extent of dye adsorption by Neem leaf powder was dependent on contact time, pH and adsorbent dose. Equilibrium adsorption was attained in 5 h and maximum adsorption occurred at pH 2. Dye adsorption followed pseudo second-order kinetics. Equilibrium adsorption data were described by the Langmuir and Freundlich adsorption isotherm models. Acid dye adsorption capacity of the Neem leaf powder was compared with that of other plant-based adsorbents and activated carbons. Neem leaf powder is effective in adsorptive removal of acid dyes from aqueous solution.

Item Type:Book Section
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:7736
Deposited By: Prof Malay Chaudhuri
Deposited On:22 Jun 2012 07:05
Last Modified:19 Jan 2017 08:21

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