Removal of malachite green from aqueous solution by adsorption using luffa sponge biomass

Ang, Ee Laine (2007) Removal of malachite green from aqueous solution by adsorption using luffa sponge biomass. Universiti Malaysia Sabah. (Unpublished)

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Abstract

The adsorption removal of malachite green from aqueous solution using luffa sponge biomass was determined by batch method under different contact time, initial dye concentration and adsorbent dosage. The residual dye concentration was analysed spectrophotometrically at ג,=692nm. The results showed that the adsorption process was rapid with significant removal of malachite green from solution after 5 minutes. Equilibrium was, however, attained after 60 minutes. The adsorption confirms to pseudo-second-order kinetic model (R²= 0.9996) as well as to both Freundlich and Langmuir isotherms (R²= 0.9638 and R²= 0.9789). The calculated maximum adsorption capacity was 10.46 mgg�¹. The effect of initial dye concentration and adsorbent dosage on removal of malachite green (more than 88% removal), was not very apparent for the range of concentrations and dosages studied. Overall, luff a sponge can potentially be used for the removal of cationic pollutants, including malachite green, from wastewater.

Item Type: Academic Exercise
Uncontrolled Keywords: luffa sponge biomass, dye concentration, removal of malachite green, adsorption, cationic pollutant, wastewater
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Depositing User: MDM SITI AZIZAH IDRIS
Date Deposited: 11 Feb 2014 03:01
Last Modified: 11 Oct 2017 05:23
URI: http://eprints.ums.edu.my/id/eprint/8173

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