[논문]Mercury Ion Removal Using a Packed-Bed Column with Granular Aminated Chitosan

JEON, CHOONC

Mercury Ion Removal Using a Packed-Bed Column with Granular Aminated Chitosan 원문보기

Journal of microbiology and biotechnology, v.15 no.3, 2005년, pp.497 - 501

JEON, CHOONC (Department of Environmental & Applied Chemical Engineering, Kangnung National University)

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This study deals with the removal of mercury species using a packed-bed column with spherical aminated chitosan material. These adsorbents revealed a high adsorption capacity for mercury species. Experiments with feed solutions of 10 ppm Hg dissolved in distilled water showed an excellent removal with a sharp increase of the filter effluent concentration after a total throughput of 900 bed volumes of feed water. Up to $95\%$ desorption was reached by using 3 bed volumes of 0.01 N EDTA solution. EDTA could be recovered by means of sulfuric acid with about $75\%$ efficiency. Almost the same results were obtained in repeated sorption and desorption experiments at identical conditions. The experiments demonstrated that the sorbents possessed practically no sorption capacity for alkaline earth ions ($Ca^{2+}\;and\;Mg^{2+}$). Their influence on the sorption of mercury was negligible. In experiments with spiked tap water of the Karlsruhe Research Centre and a feed mercury concentration of 0.01 mg/l, the breakthrough of Hg was observed only after a total throughput of about 6,000 bed volumes of feed water.

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Mercury Ion Removal Using a Packed-Bed Column with Granular Aminated Chitosan 원문보기

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