Biosorption of cadmium from water using surfactant impregnated eggshell
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EARET
Abstract
Cadmium (Cd) is regarded as one of the most toxic
elements and it causes water pollution when it exceeds the
permissible limit. It is currently present in the Mooi River above
these permitted levels, and must therefore be removed using
effective methods. In this study, egg shell adsorbent was prepared
through physico-chemical treatment including impregnation with
an anionic surfactant, namely sodium dodecyl sulphate; the
resulting adsorbents were characterized using FTIR spectroscopy.
The prepared adsorbents were then used for the removal of
cadmium from solution. The results showed that there were
additional binding groups on the egg shell following impregnation,
this contributed to increase the adsorption capacity of the
adsorbent. The adsorption of cadmium by the pristine egg shell
membrane (ESM) and the impregnated egg shell membrane
(SDS-ESM) fitted the pseudo second order kinetic model which
allowed to predict adsorption capacities of 16.56 mg/g and 20.4
mg/g, respectively. In can therefore be concluded that the
impregnation of the ESM is a suitable approach to improve its
adsorption capacity
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Fosso-Kankeu, E. et al. 2018. Biosorption of cadmium from water using surfactant impregnated eggshell. 10th International Conference on Advances in Science, Engineering, Technology & Healthcare (ASETH-18), 19-20 Nov 2018, Cape Town, South Africa: 183-189. [https://doi.org/10.17758/EARES4.EAP1118246]