Cobalt removal from wastewater using pine sawdust
Journal article
Authors / Editors
Research Areas
Publication Details
Subtitle: Cobalt removal from wastewater using pine sawdust
Publisher: Global Science Books
Publication year: 2012
Volume number: 11
Issue number: 39
Start page: 9407
End page: 9415
Number of pages: 9
ISSN: 1752-3931
URL: http://www.academicjournals.org/AJB
Abstract
Agricultural wastes can cause environmental problems if not well managed, but there is a lot of potential to use these wastes as raw material in other processes. In this investigation, pine sawdust was evaluated as an adsorbent in the treatment of wastewater containing cobalt ions. A two-level three-factor full-factorial experimental design with centre points was used to study the interactive effect of the operating parameters in order to achieve the best conditions for the batch adsorption of cobalt ions. A response surface analysis was also conducted to further understand the interactions amongst the factors such as adsorbent dose, solution pH and initial concentration. In addition, adsorption isotherms, namely the Freundlich and Langmuir, were used to characterize the removal of cobalt from the wastewater. It was observed that the combined effect of low adsorbent dose, high pH and high initial concentration of wastewater resulted in the highest adsorption capacity. The Freundlich isotherm provided a better fit to the experimental data than the Langmuir isotherm. Moreover, pine sawdust showed adsorption capabilities for cobalt, and hence it could be an option in the quest to use waste to treat wastewater.
Keywords
No matching items found.
Documents
No matching items found.
