Thermodynamic Characterization of Sorption of Copper(II) ions on Rice Husk
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 7
Abstract
This paper attempts to develop simple and easily understandable thermodynamic parameters related sorption process at the equilibrium. Batch kinetic studies were conducted for the adsorption of Cu(II) on SCRH (sodium carbonate treated rice husk). The removal were observed to increases from 92.9 to 96 % with the increase in temperature from 15° to 50° C. Equilibrium time was found to be 60 min. The overall scenario represented by thermodynamic parameters was found to be a better indicator of understanding the process mechanism. Sorption of Cu(II) on SCRH followed pseudo second-order kinetic equation. The Gibbs free energy ΔG° values for the adsorption processes of Cu(II) at 15° , 30° , 40° and 50 °C was obtained as – 6.16, – 6.84, – 8.01 and – 8.53 kJ/mol respectively. The negative value, ΔG° confirms the feasibility of the adsorption process and spontaneous nature of adsorption. The values of ΔH° and ΔS ° for Cu(II) were obtained as 14.37 kJ/mol and 70.92 J/mol respectively. The positive value of ΔH° indicates endothermic nature of adsorption, while positive ΔS ° value confirms the increased randomness at the solid-liquid interface during adsorption. The activation energy for the sorption of Cu(II) was found as 9.00 kJ/mol indicating chemisorptions.
Authors and Affiliations
Upendra Kumar
Keywords
Related Articles
- EP ID EP137856
- DOI -
- Views 84
- Downloads 0
Experimental Studies on Partial Replacement of Cement by Using Hypo Sludge Concrete
Over 300 million tones of industrial wastes are being produced per annum by chemical and agricultural process in India. These materials pose problems of disposal and health hazards. The wastes like phosphogypsum,...
Experimental Study on Performance of Condenser of Two Different Types Used In Window Air Conditioner: A Review
This review paper presents the work of various researchers on the performance of condenser, used in air conditioners with various refrigerants. In this research author used different type of condenser, single and multi...
Band Width and Gain Optimization of a Wide Band Gap Coupled Patch Antenna
Band Width and gain optimization of w presented. Using this novel technique the band width can be improved up to 85.21% covering the frequency range from 0.951-2.363 GHz and gain has been improved up to 5.8 dBi. This s...
HECC-CHAP BASED PRIVACY PRESERVATION IN DISTRIBUTED INFORMATION SHARING
Dept. of computer Science Security is an important issue during the transmission of data. Privacy Preservation enables various users to send their data to the server privately so that the external users can’t acce...
NEW-FANGLED ASSIMILATION OF A PV-WIND ENERGY SYSTEM WITH ENHANCED EFFICIENCY
A novel integration scheme of solar photovoltaic (PV) with a large capacity doubly excited induction generator-based wind energy system is described. The proposed scheme uses both the grid- and rotor-side power co...