Abstract
The present work is an attempt to determine the feasibility and reliability of fish bones utilized as an adsorbent for the removal of zinc (II) from aqueous solution. The effects of solution pH, adsorbent dose and contact time on the adsorption process with respect to the zinc (II) removal were investigated via batch techniques at room temperature. The reaction kinetics of the zinc (II) removal from the aqueous solution were identified and correlated to the pseudofirst- and second-order kinetic models. The results obtained from the experimental work showed that fish bone can be transformed into adsorbent for removing metal ions from the aqueous solution. The results revealed that 98% of zinc (II) able to be sequestered under best adsorption conditions: pH 5.0, adsorbent dose = 1.80g/100mL, and 12hours reaction time. The kinetic data was fitted to pseudo-first order and pseudo-second order, and was identified follow closely to pseudo-second-order kinetic model. Fish bones show promising results in removing zinc (II) from aqueous solution, thus this material could be used as low cost adsorbent to replace the expensive commercial activated carbon during adsorption process.
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