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Sorption behaviour of bifenthrin on cork.
V Domingues1, A Alves, M Cabral
1REQUIMTE, Departamento de Química, Instituto Superior de Engenharia do Instituto Politécnico do Porto, Rua Dr. Antdnio Bernardino de Almeida, no. 431, 4200-072 Porto, Portugal.
Journal of Chromatography. A
|April 23, 2005
Summary
Granulated cork effectively removes bifenthrin, a pyrethroid pesticide, from wastewater. This study shows cork waste is a viable, low-cost alternative to activated carbon for water purification.
Area of Science:
- Environmental Chemistry
- Materials Science
Background:
- Pyrethroid pesticides like bifenthrin pose risks to aquatic ecosystems.
- Effective removal of contaminants from wastewater is crucial for environmental protection.
Purpose of the Study:
- To investigate the efficacy of granulated cork as a sorbent for bifenthrin removal from aqueous solutions.
- To compare cork's performance with activated carbon for bifenthrin sorption.
Main Methods:
- Batch sorption experiments were conducted using two sizes of granulated cork.
- Adsorption isotherms (Langmuir and Freundlich) were analyzed.
- Bifenthrin desorption kinetics were evaluated for different cork granule sizes.
Main Results:
- Both Langmuir and Freundlich models showed high linear correlations, indicating favorable adsorption.
- Cork demonstrated effective bifenthrin removal, with performance varying by granule size.
- Desorption results also depended on the cork granule size.
Conclusions:
- Cork wastes can serve as an economical and natural sorbent for removing bifenthrin and similar pollutants from wastewater.
- Granulated cork presents a sustainable alternative to conventional sorbents like activated carbon.