Volume 12 Issue 4 May - July 2017
Research Paper
Determination of
Adsorption Kinetics for Removal of Copper from Wastewater usingSpent Tea
Extract (STE)
S. V. A. R. Sastry*, Sarva Rao B**
*-** Faculty,
Department of Chemical Engineering, MVGR College of Engineering (Autonomous),
Vizianagaram, India.
Sastry, S.V.A.R.,
and Rao, B.S. (2017). Determination of Adsorption Kinetics for Removal of
Copper from Wastewater using Spent Tea Extract (STE).i-manager’s
Journal on Future Engineering and Technology, 12(4), 27-32.https://doi.org/10.26634/jfet.12.4.13629
Abstract
There are
many mineral processing industries generating huge amount of effluents
containing metals, such as Nickel, Zinc, Lead, Cadmium, Chromium, and Copper.
These metals stay over for millions of years and also pollute the water bodies.
This work presents the study of the capturing of copper ions from wastewater
using Spent Tea Extract (STE). Experiments were piloted to discover the factors
influencing adsorption kinetics. Based on the previous work, the following
optimum conditions were established: Adsorbent dosage of 0.5 g (in 50 ml
solution), pH of 5 and temperature of 30 °C. The adsorption capacity was
highest at solution pH 5. The kinetics and adsorption isotherms were studied
using pseudo-second order equation, and Langmuir, Freundlich isotherm models.
Adsorbent dosage, pH and temperature played a significant role in the rate of
adsorption. The percentage removal of Cu(II) was higher initially and reached
equilibrium after 30 min. The maximum removal rate for Cu(II) was 59.84%. The
examination of kinetics and adsorption isotherm revealed that the sorption
experiments fitted well with the pseudo-second order equation and Freundlich
isotherm model, respectively.
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