Modified sequential extraction for biochar and petroleum coke: Metal release potential and its environmental implications
| Autor: | Md. Samrat Alam, Yong Sik Ok, Magdalena Hubmann, Daniel S. Alessi, Konstantin von Gunten, Kurt O. Konhauser |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
010504 meteorology & atmospheric sciences Bioengineering 010501 environmental sciences 01 natural sciences 12. Responsible consumption Metal Transition metal Metals Heavy Biochar Oil and Gas Fields Coke Waste Management and Disposal 0105 earth and related environmental sciences Alkaline earth metal Sewage Waste management Renewable Energy Sustainability and the Environment Chemistry Petroleum coke General Medicine Contamination 6. Clean water Petroleum 13. Climate action visual_art Environmental chemistry visual_art.visual_art_medium Oil sands Leaching (metallurgy) |
| Zdroj: | Bioresource Technology. 236:106-110 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2017.03.162 |
| Popis: | A modified Community Bureau of Reference (CBR) sequential extraction method was tested to assess the composition of untreated pyrogenic carbon (biochar) and oil sands petroleum coke. Wood biochar samples were found to contain lower concentrations of metals, but had higher fractions of easily mobilized alkaline earth and transition metals. Sewage sludge biochar was determined to be less recalcitrant and had higher total metal concentrations, with most of the metals found in the more resilient extraction fractions (oxidizable, residual). Petroleum coke was the most stable material, with a similar metal distribution pattern as the sewage sludge biochar. The applied sequential extraction method represents a suitable technique to recover metals from these materials, and is a valuable tool in understanding the metal retaining and leaching capability of various biochar types and carbonaceous petroleum coke samples. |
| Databáze: | OpenAIRE |
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