Academic Journals Database
Disseminating quality controlled scientific knowledge

STUDIES ON THE ISOTHERMS, KINETICS AND THERMODYNAMICS OF ADSORPTION OF CRYSTAL VIOLET ON LOW COST MATERIALS

ADD TO MY LIST
 
Author(s): Abdo Taher | Mohd Mohsin | Mazahar Farooqui | Maqdoom Farooqui

Journal: Journal of Advanced Scientific Research
ISSN 0976-9595

Volume: 3;
Issue: 1;
Start page: 36;
Date: 2012;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

Keywords: Crystal violet dye | Adsorption | Isotherms | Kinetic and thermodynamic | Low cost material

ABSTRACT
The low cost adsorbent namely Cassia Siamea (CS), Albizia Labbeck (AL), Nerium Indicum (NI), Durauta Erecta (DE), and Potato Husk (PH) have been tested for the effectiveness in declourisation of wastewater containing a crystal violet dye (CV) by an adsorption technique. The various parameters such as contact time, dye concentration, temperature, adsorbent dosage, pH and ionic strength were applied for the study. The equilibrium was attained within 50 min, the adsorption of the dye on solution was studied in the pH range 2-7, the salt dosage was increased from 0.05 to 0.5 g. Adsorption was carried out at different temperature in the range of 293 to 333 K±0.5K It was observed that the adsorption increase with increasing in time, solution pH and dosage (g). It was also observed that adsorption decreases with increase in CV concentration and the addition of salt. The kinetic data were then fitted using both Pseudo –first order model and second order model, Langmuir and Freundlich models were often used to describe equilibrium adsorption isotherms and the thermodynamic parameters, change in enthalpy (ΔH) (KJ/mol) and change in entropy (ΔS) (J/mol) which related to the Gibbs free energy (ΔG).
Why do you need a reservation system?      Affiliate Program