Evaluation of the mercaptobenzothiazole degradation by combined adsorption process and Fenton reaction using iron mining residue
The present study investigated the degradation of mercaptobenzothiazole (MBT), evaluating homogeneous and heterogeneous systems. An iron mineral residue from the desliming step of iron mining was used as a source in the Fenton-like reaction (advanced oxidation process). A granulometric analysis of t...
| Veröffentlicht in: | Environmental technology. - 1993. - 38(2017), 16 vom: 15. Aug., Seite 2032-2039 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2017
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| Zugriff auf das übergeordnete Werk: | Environmental technology |
| Schlagworte: | Journal Article AOP Degradation adsorption fenton-like mercaptobenzothiazole Ferric Compounds Sulfhydryl Compounds Hydrogen Peroxide BBX060AN9V mehr... |
| Zusammenfassung: | The present study investigated the degradation of mercaptobenzothiazole (MBT), evaluating homogeneous and heterogeneous systems. An iron mineral residue from the desliming step of iron mining was used as a source in the Fenton-like reaction (advanced oxidation process). A granulometric analysis of the residue was performed and yielded fractions with high hematite (Fe2O3) and low quartz content in sieves from 74 to below 44 mm. In this particle size range, the hematite content from 58.9% to 67.4% and the Brunauer-Emmett-Teller area from 0.1345 to 1.3137 m2 g-1 were obtained. The zeta potential curves as a function of pH were obtained for the residue, the MBT solution and mixtures thereof. The adsorption of MBT in the residue and its degradation through the Fenton-like reaction were investigated. Adsorption tests and the Fenton-like reaction were carried out, where the MBT species and the residue are oppositely charged, yielding, respectively, 10% MBT adsorption on the surface of the residue and 100% MBT degradation by the Fenton-like reaction at pH 3, hydrogen peroxide concentration of 25 mg L-1, residue concentration of 3 g L-1, 200 rpm and 25°C, from a 100 mg L-1 MBT solution. MBT degradation was found to occur mainly by the heterogeneous Fenton-like process |
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| Beschreibung: | Date Completed 26.07.2017 Date Revised 02.12.2018 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1479-487X |
| DOI: | 10.1080/09593330.2016.1244571 |