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Details van artikel 102 van 114 gevonden artikelen
| Titel: |
Stabilization Treatment for Reutilization of Spent Refinery Catalyst into Value-Added Product |
| Auteur: |
Sun, Darren Delai |
| Verschenen in: |
Energy sources. Part A, Recovery utilization and environmental effects |
| Paginering: | Jaargang 25 (2003) nr. 6 pagina's 607-615 |
| Jaar: |
2003-06 |
| Inhoud: |
This study attempts to stabilize the heavy metals present on spent fluid catalytic cracking (FCC) catalysts in the marine clay matrix and produce value-added high strength bricks through a sintering process. Experimental results showed that the resulting bricks had high unconfined compressive strength ranging between 20.0 N/mm2 and 92.0 N/mm2 for marine clay-spent FCC catalyst samples and low-water absorption values ranging between 4.8 wt% and 18.5 wt%, as well as low metal leaching rates with metal concentrations ranging between 0.1 mg/l and 6.6 mg/l for vanadium and between 9.5 μg/l and 52.8 μg/l for nickel. It is believed that the stabilization process can be achieved in 2 ways: incorporation, in which the heavy metals form chemical bonds with the surrounding matrix to become part of its crystal structure, and encapsulation, in which a physical barrier is formed around the heavy metals, preventing them from leaching into the environment. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 102 van 114 gevonden artikelen
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