Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 46, Issue 14, Pages 2275-2282Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2011.594846
Keywords
adsorption; anionic surfactant; bamboo sawdust; isotherm; zinc (II) ion
Funding
- USM [304/PTEKIND/639062]
- University Sains Malaysia
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The present study explores the ability of surfactant modified bamboo sawdust in removing zinc (II) ions from aqueous solutions. The modified bamboo sawdust is characterized by surface area analysis, Scanning Electron Microscope, and Fourier Transform Infrared and X-ray fluorescence analysis. Adsorption isotherm and kinetic models were used to study the adsorption characteristics of zinc (II) ions onto modified bamboo sawdust. The equilibrium adsorption isotherm data were fitted into the Langmuir and Freundlich adsorption isotherms. It was found that modified bamboo sawdust yielded maximum adsorption capacity of 111.12 mg/g at 50 degrees C for zinc (II) ions. The kinetic data obtained at different initial concentrations were analyzed using first-order-reversible reaction, pseudo-first-order, and pseudo-second-order models. The results provide strong evidence to support the hypothesis of adsorption mechanism.
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