Cadmium (Cd) removal from aqueous solution using microwave incinerated rice husk ash (MIRHA)
Presence of heavy metals in aquatic systems has become a serious problem. Heavy metals can have adverse effects on environment as well as human health. As a result, much attention has been given to new technologies for removal of heavy metal ions from contaminated waters. This study uses Microwave I...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://scholars.utp.edu.my/id/eprint/2685/ http://scholars.utp.edu.my/id/eprint/2685/1/Cadmium_%28Cd%29_removal_from_aqueous_solution_using_microwave_incinerated_rice_husk_ash_%28MIRHA%29.pdf |
| Summary: | Presence of heavy metals in aquatic systems has become a serious problem. Heavy metals can have adverse effects on environment as well as human health. As a result, much attention has been given to new technologies for removal of heavy metal ions from contaminated waters. This study uses Microwave Incinerated Rice Husk Ash (MIRHA), a locally available agricultural waste, for the removal of Cd (as a representative heavy metal) from synthetic wastewater by batch adsorption process. Influence of pH, initial metal concentration and contact time on Cd removal efficiency was studied. pH 4 was found to be optimum. The removal efficiency correlated with the initial metal concentration and contact time between adsorbent and adsorbate. Cd adsorption kinetics followed the pseudo-second-order model and implied chemisorption. Adsorption equilibrium of Cd can be well described by the Freunclich isotherm model. |
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