Abstract
With the increasing incidence of accidental oil spills, there is now a growing worldwide concern about the urgent need to purify oil-polluted sea water and conserve the marine ecosystem. Carbonized rice hull (CRH) prepared in the open air has been studied as adsorbent for purification of oil-polluted sea water. The adsorption effects of CRH and CRH absorption bag were both investigated. The results showed that under the dosage of 20 g/L and initial oil concentration of 746, 520 and 380 μg/L, the obtained oil removal efficiencies were 59.0%，78.8% and 67.1%, respectively. The adsorption bag counterpart indicated that under the initial oil concentration of 546 μg/L, an equilibrium state was reached for all the three kinds of package bags. The obtained adsorption amounts were 21.7, 25.5, 22.8 μg/g and the corresponding removal efficiencies were 59.7%, 70.0% and 62.6%, respectively.
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