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Recycling of Polymer Waste with Fluid Catalytic Cracking Catalysts.

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Title: Recycling of Polymer Waste with Fluid Catalytic Cracking Catalysts.
Authors: Ali, Salmiaton1 mie@eng.upm.edu.my, Garforth, Arthur2, Fakhru'l-Razi, A.1
Source: Journal of Environmental Science & Health. Part A. Toxic/Hazardous Substances & Environmental Engineering. Jun2006, Vol. 41 Issue 6, p1145-1154. 10p. 1 Diagram, 2 Charts, 4 Graphs.
Subjects: Polyethylene, Waste recycling, High density polyethylene, Catalytic cracking, Cracking process (Petroleum industry), Fluidized-bed furnaces, Polymers, Rare earth oxides, Metallic oxides
Abstract: Feedstock recycling of high-density polyethylene (HDPE) over fluid catalytic cracking (FCC) catalysts (1:6 ratio) was carried out using a laboratory fluidized bed reactor operating at 450°C. Fresh and steam deactivated commercial FCC catalysts with different levels of rare earth oxide (REO) were compared as well as used FCC catalysts (E-Cats) with different levels of metal poisoning. Fresh FCC catalysts gave the highest results of HDPE degradation in terms of yield of volatile hydrocarbon product. Meanwhile, steamed FCC catalysts and used FCC catalysts showed similar but lower yields. Overall, the product yields from HDPE cracking showed that the level of metal contamination (nickel and vanadium) did not affect the product stream generated from polymer cracking. This study gives promising results as an alternative technique for the cracking and recycling of polymer waste. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:Feedstock recycling of high-density polyethylene (HDPE) over fluid catalytic cracking (FCC) catalysts (1:6 ratio) was carried out using a laboratory fluidized bed reactor operating at 450°C. Fresh and steam deactivated commercial FCC catalysts with different levels of rare earth oxide (REO) were compared as well as used FCC catalysts (E-Cats) with different levels of metal poisoning. Fresh FCC catalysts gave the highest results of HDPE degradation in terms of yield of volatile hydrocarbon product. Meanwhile, steamed FCC catalysts and used FCC catalysts showed similar but lower yields. Overall, the product yields from HDPE cracking showed that the level of metal contamination (nickel and vanadium) did not affect the product stream generated from polymer cracking. This study gives promising results as an alternative technique for the cracking and recycling of polymer waste. [ABSTRACT FROM AUTHOR]
ISSN:10934529
DOI:10.1080/10934520600623042