(3.238.95.208)
Users online: 1295    [ij] [ij] [ij] 
Email id
 

Research Journal of Pharmacy and Technology
Year : 2018, Volume : 11, Issue : 5
First page : ( 2006) Last page : ( 2016)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2018.00373.6

Removal of methylene blue from an aqueous solution using Plumbago zeylanica Leaves-Optimisation using response surface methodology (RSM)

Pallavi P.1,*, King P.2, Kumar Y. Prasanna3

1Department of Civil Engineering, JBIT College of Engineering and Technology, Hyderabad-500085, (Telangana) India

2Department of Chemical Engineering, Andhra University College of Engineering, Visakhapatnam-530003, (Andhra Pradesh) India

3Visakha Institute of Engineering and Technology, Visakhapatnam, India

*Corresponding Author E-mail: pallavichemico@gmail.com

Online published on 21 August, 2018.

Abstract

Dyes are colour organic compounds which can colorize the substances usually present in the effluent water of many industries such as textiles, leather, paper, printing and cosmetics. The feasibility of removing dye from an aqueous solution using Plumbago zeylanica, a natural source was tested by biosorption process. The Plumbago zeylanica was characterized by Fourier Transform Infrared Spectroscopy (FTIR) analysis. FTIR results showed that complexation and ion exchange appears to be the principal mechanism for MB biosorption.. Batch biosorption technique was used to investigate the effects of various experimental parameters like contact time, solution pH, initial dye concentration, dosage of the biosorbent, average biosorbent size and temperature on biosorption. The biosorption data were well described by the Freundlich model, although they could be modeled by Langmuir, Temkin isotherm models. Three simplified kinetic models including pseudo-first order, pseudosecond order and Elovchi models were selected to follow the biosorption model. The pseudo-second order model agrees with experimental data well. The obtained thermodynamic parameters such as enthalpy, entropy and free energy indicated that the biosorption of methylene blue onto Plumbago zeylanica is exothermic and spontaneous process. RSM studies were conducted to optimize the biosorption process.

Top

Keywords

Biosorption, Plumbago zeylanica, Isotherms, Kinetics, Thermodynamics, RSM.

Top

  
║ Site map ║ Privacy Policy ║ Copyright ║ Terms & Conditions ║ Page Rank Tool
515,397,163 visitor(s) since 30th May, 2005.
All rights reserved. Site designed and maintained by DIVA ENTERPRISES PVT. LTD..
Note: Please use Internet Explorer (6.0 or above). Some functionalities may not work in other browsers.