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
Depositing User: Prof Malay Chaudhuri
Date Deposited: 22 Jun 2012 07:05
Last Modified: 19 Jan 2017 08:21

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