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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 3    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 3,March 2012
Coconut leaves as a low cost adsorbent for the removal of Nickel from Electroplating effluents
Full Text(PDF, )  PP.445-449  
Author(s)
Rudre Gowda, A.G.Nataraj and N.Manamohan Rao
KEYWORDS
s: Adsorption, Coconut leaves, Nickel(II).
ABSTRACT
This study was focused on coconut leaves as an alternative adsorbent for the removal of Ni(II) from wastewater. Batch experiments were conducted at room temperature 270C to determine the factors affecting adsorption of Ni(II). The adsorption process is affected by various parameters such as contact time, solution pH, adsorbent dose and initial concentration. The maximum removal efficiency of Ni(II) was 93.18% for 2.0g/50ml of coconut leaves at pH 8.0 in optimum time of 4 hours. The experimental data was tested using Langmuir and Freundlich equations. The data fitted well to both Langmuir and Freundlich isotherms. The adsorption kinetics were best described by the pseudo second order model. The cost of removal is expected to be quite low, as the adsorbent is cheap and easily available in large quantities. The present study showed that coconut leaves was capable of removing Ni(II) from aqueous solution.
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