Feasibility study of the use of basic oxygen furnace sludge in a permeable reactive barrier
| Autor: | Paulo Ricardo Frade, Luiza Notini, Sara V. Santos, Mônica Maria Diniz Leão, Camila C. Amorim, Regina de Fátima Peralta Muniz Moreira |
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| Rok vydání: | 2018 |
| Předmět: |
Basic oxygen steelmaking
Environmental Engineering Chemistry Environmental remediation Health Toxicology and Mutagenesis 0208 environmental biotechnology chemistry.chemical_element Sorption 02 engineering and technology 010501 environmental sciences 01 natural sciences Pollution Chemical reaction 020801 environmental engineering Chromium Chemical engineering Permeable reactive barrier Environmental Chemistry Waste Management and Disposal Dissolution 0105 earth and related environmental sciences Reactive material |
| Zdroj: | Journal of Hazardous Materials. 351:188-195 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/j.jhazmat.2018.02.035 |
| Popis: | In this study, the steel manufacturing waste Basic Oxygen Furnace Sludge (BOFS) was tested as permeable reactive material for the remediation of soil contaminated with chromium. The material presents a high content of elemental iron and iron oxides typical of the steel manufacturing process. Here we propose a scheme of the chemical reactions responsible for remediation process including BOFS dissolution, Cr(VI) reduction and Cr(III) precipitation. Batch reactors showed that Cr(VI) removal increases as the pH decreases. Column tests demonstrated that the simulated PRB with BOFS as the reactive media was quite effective for removing Cr(VI) from groundwater, with a sorption capability of 0.213 mg Cr per gram of BOFS at an initial Cr(VI) concentration of 50 mg L−1 at pH 5.5. A long-term test lasting 71 days confirmed the proposed mechanisms and the suitability of using BOFS in a permeable reactive barrier. |
| Databáze: | OpenAIRE |
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