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Toluene and naphthalene sorption by iron oxide/clay composites |
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| Authors: | Marilda M G R Vianna Jo Dweck Frank H Quina Flavio M S Carvalho Claudio A O Nascimento |
| Institution: | 1. Chemical Engineering Department, Polytechnic School, University of S?o Paulo, Sao Paulo, SP, Brazil 2. School of Chemistry, Rio de Janeiro Federal University, Rio de Janeiro, RJ, Brazil 3. Chemical Institute, University of S?o Paulo, Sao Paulo, SP, Brazil 4. Geosciences Institute, University of S?o Paulo, Sao Paulo, SP, Brazil |
| Abstract: | Commercial bentonite (BFN) and organoclay (WS35), as well as iron oxide/clay composite (Mag_BFN) and iron/oxide organoclay composite (Mag_S35) were prepared for toluene and naphthalene sorption. Mag_BFN and Mag_S35 were obtained, respectively, by the precipitation of iron oxide hydrates onto sodium BFN and S35 clay particles. The materials were characterized by powder X-ray diffraction (XRD), X-ray Fluorescence (XRF), and TG and DTA. From XRF results and TG data on calcined mass basis, a quantitative method was developed to estimate the iron compound contents of the composites, as well as the organic matter content present in WS35 and Mag_S35. |
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