Adsorption of Heavy Metals from Aqueous Solution onto Sawdust Activated Carbon

Authors

  • Marah W. Khalid Department of Biochemical Engineering/ Al-khwarizmi College of Engineering/ University of Baghdad/ Iraq
  • Sami D. Salman Department of Biochemical Engineering/ Al-khwarizmi College of Engineering/ University of Baghdad/ Iraq

Abstract

In this study, sawdust as a cheap method and abundant raw material was utilized to produce active carbon (SDAC). Physiochemical activation was utilized where potassium hydroxide   used as a chemical activating agent and carbon dioxide was used as a physical activating agent. Taguchi method of experimental design was used to find the optimum conditions of SDAC production. The produced SDAC was characterized using SEM to investigate surface morphology and BET to estimate the specific surface area. SDAC was used in aqueous lead ions adsorption. Adsorption process was modeled statistically and represented by an empirical model. The highest specific surface area of SDAC was 688.3 m2/gm. Langmuir and Freundlich isotherms were used to fit the adsorption process, where equilibrium data was best represented by Langmuir isotherm model.  Pseudo-first order and pseudo-second order equations were used to study adsorption kinetics, lead adsorption on SDAC fitted pseudo- second order more adequately. Best removal efficiency was found to be 99.63% with highest adsorption capacity of 19.92 mg/g.

 

Downloads

Download data is not yet available.

Downloads

Published

2019-09-01

How to Cite

Khalid, M. W., & Salman, S. D. (2019). Adsorption of Heavy Metals from Aqueous Solution onto Sawdust Activated Carbon. Al-Khwarizmi Engineering Journal (Alkej), 15(3), 60–69. Retrieved from https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/650

Issue

Vol. 15 No. 3 (2019): Al-Khwarizmi Engineering Journal

Section

Articles

License

Copyright: Open Access authors retain the copyrights of their papers, and all open access articles are distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations. While the advice and information in this journal are believed to be true and accurate on the date of its going to press, neither the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may be made. The publisher makes no warranty, express or implied, with respect to the material contained herein.