Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Current Research in Chemistry
  Year: 2012 | Volume: 4 | Issue: 2 | Page No.: 26-40
DOI: 10.3923/crc.2012.26.40
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Kinetics and Thermodynamic Adsorption of Pb(II) and Cd(II) Ions from Used Oil onto Thevetia neriifolia Nutshell Active Carbon

Friday O. Nwosu, Bamidele I. Olu-Owolabi and Kayode O. Adebowale

Abstract:
Active carbon was prepared from Thevetia neriifolia nutshell by carbonization at 480°C in N2 and activation with CO2 at 840°C for 3 h. The values of 822.2 mg g-1, 0.113 cm3 g-1 and 551 m2 g-1 were obtained for iodine number, micropore volume and BET surface area, respectively. First, second and Pseudo-second orders kinetic models described kinetic data at various temperatures for adsorption of Pb(II) and Cd(II) ions from used oil onto the carbon. Pseudo-second order kinetic model fitted better and was controlled by film diffusion. Enthalpy and entropy were found to be negative for Pb(II) and positive for Cd(II). Adsorption process was non-spontaneous for Pb(II) and spontaneous for Cd(II) metal ions. However, low enthalpy value makes the adsorption process energetically stable. Thus, the active carbon could be adopted as a potential adsorbent for remediation of environment.
PDF Fulltext XML References Citation Report Citation
 RELATED ARTICLES:
  •    COD and BOD Reduction of Domestic Wastewater using Activated Sludge, Sand Filters and Activated Carbon in Saudi Arabia
  •    Utilization of Cocoa Pod Husk for the Removal of Remazol Black B Reactive Dye from Aqueous Solutions: Kinetic, Equilibrium and Thermodynamic Studies
  •    Comparative Study of the Removal of Cadmium from Aqueous Solution by using Low-cost Adsorbents
  •    Removal of Selected Organic Compounds in Aqueous Solutions by Activated Carbon
How to cite this article:

Friday O. Nwosu, Bamidele I. Olu-Owolabi and Kayode O. Adebowale, 2012. Kinetics and Thermodynamic Adsorption of Pb(II) and Cd(II) Ions from Used Oil onto Thevetia neriifolia Nutshell Active Carbon. Current Research in Chemistry, 4: 26-40.

DOI: 10.3923/crc.2012.26.40

URL: https://scialert.net/abstract/?doi=crc.2012.26.40

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom