| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 608673 | Journal of Colloid and Interface Science | 2011 | 6 Pages |
Magnetic carbonaceous materials were produced by carbonization of a cation exchange resin loaded with ferrous or ferric iron and activation using sieved oyster shell as the activation agent. The magnetic carbonaceous material with the maximum magnetic flux density on every axis (ESS-1) was obtained from the ferric-loaded resin by carbonization at 700 °C, followed by activation with the oyster shell at 900 °C, and magnetization. A separate step of carbonization and activation appears to cause more of a reduction reaction of Fe to form γ-Fe2O3. The Fe compound in the magnetic carbonaceous material was identified from the XRD pattern as mainly γ-Fe2O3. The magnetic flux density on every axis increased linearly as the amount of the oyster shell increased. Moreover, the adsorption ability of the products was evaluated for pesticides and metal ions. Both ESS-1 and a carbonaceous material obtained from the resin without ferric ion (RC) appear to have the highest adsorption ability for lead. Furthermore, the adsorption ability of ESS-1 might decrease by blockages of the pores with the loaded Fe compounds.
Graphical abstractNew magnetic carbonaceous materials were produced by carbonization of a ferric-loaded resin and activation using sieved oyster shell; the maximum magnetic flux density of the products was 1.4 mT.Figure optionsDownload full-size imageDownload high-quality image (57 K)Download as PowerPoint slideHighlights► New magnetic carbonaceous materials were produced from a ferric-loaded resin and oyster shell. ► The maximum magnetic flux density of the products was 1.4 mT. ► The Fe compound of the product was mainly identified as γ-Fe2O3. ► The products are anticipated as an easily collected adsorbent for pesticides and metal ions.
