Adsorption kinetics and equilibrium of cooper and zinc on sponge gourd fibre

Ng, Suk Ying (2008) Adsorption kinetics and equilibrium of cooper and zinc on sponge gourd fibre. Universiti Malaysia Sabah. (Unpublished)

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Abstract

The kinetics and equilibrium of Cu and Zn adsorption by sponge gourd fibre were investigated according to batch method. The final concentration of Cu and Zn in solution was determined using atomic adsorption spectrophotometer. The experimental results showed that the adsorption of both metals was rapid during the first 10 minutes and thereafter slowed down until equilibrium was attained after 60 minutes. The adsorption can be well described ( R²~1.0000) by pseudo-second order kinetic model. The adsorbed amount of Cu and Zn increased while the percentage decreased with increase in initial metal concentration. The adsorption conforms (R2 >0.96) to both Freundlich and Langmuir isotherms. The maximum adsorption capacity, qmax, of sponge gourd fibre for Cu and Zn was 5000.0 μgg⁻¹ and 2000.0 ggg⁻¹, respectively. At fixed initial concentration, percentage removal of the metals showed an increasing trend with increase in adsorbent dosage.

Item Type: Academic Exercise
Uncontrolled Keywords: adsorption, kinetics, equilibrium, sponge gourd fibre, atomic adsorption spectrophotometer
Subjects: Q Science > QD Chemistry
Divisions: FACULTY > Faculty of Science and Natural Resources
Depositing User: Munira
Date Deposited: 08 Aug 2018 02:49
Last Modified: 08 Aug 2018 02:49
URI: http://eprints.ums.edu.my/id/eprint/20691

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