Potential Low-Cost Biosorbent for Copper Removal: Pineapple Leaf Powder
Publication: Journal of Environmental Engineering
Volume 138, Issue 3
Abstract
The present study investigates the adsorption characteristics of Cu(II) onto a low-cost biosorbent, pineapple leaf powder (PLP). Results of batch adsorption experiments showed that PLP could effectively remove Cu(II) from aqueous solution. Functional groups of PLP responsible for binding the were identified. The uptake of by PLP was very rapid, and 90% of Cu could be removed within the first 20 min. A pseudo-second-order equation could describe the kinetic data well. Copper adsorption was highly dependent on solution pH, and the removal efficiency was greater at a higher pH and low ionic strength. The apparent activation energy was calculated to be . The adsorption increased with temperature, suggesting an endothermic reaction. The maximum adsorption capacities calculated from Langmuir isotherms was at pH 5.0. From the perspective of waste utilization, high copper adsorption capacity, and freely abundant availability of this low-cost adsorbent, PLP is potentially useful for future practical applications.
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Acknowledgments
This research was supported by the National Science Council of R.O.C. (Grant No. NSC NRC96-2221-E-214-013-MY3). The authors express their thanks to the fellows of MANALAB at I-Shou University for supporting the Field-SEM analysis.
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Information
Published In
Journal of Environmental Engineering
Volume 138 • Issue 3 • March 2012
Pages: 286 - 292
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Oct 31, 2010
Accepted: May 2, 2011
Published online: May 4, 2011
Published in print: Mar 1, 2012
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