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KMID : 1156220110370020150
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Journal of Environmental Health Sciences
2011 Volume.37 No. 2 p.150 ~ p.158
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Physicochemical Characteristics of Waste Catalyst and Their In-Process Products from Recycling
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Park Joon-Seok
Jeun Byung-do
Kim Joung-Dae
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Abstract
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This research was conducted to estimate the physicochemical characteristics of waste catalyst and its in-process product from recycling and to suggest fundamental data for religious systems such as quality standards. Mo and V contents were increased from the waste catalyst to calcinated material and oxidized material. In the results of a heavy metals leaching test, Pb was not detected in any catalyst, calcinated and oxidized materials. Cu was not detected in the catalyst. However, it was detected in 1.16 mg/l for calcinated material and in 1.34~13.73 mg/l for oxidezed material. Concentrations in recycling in-process products (calcinated and oxidized materials) were higher than those of waste catalyst. Oil content of catalyst waste ranged from 0.01-14.03 wt%. Oil contents of calcinated and oxidized materials were greatly decreased compared to the catalyst waste. Carbon and sulfur contents as chemical poisoning material of catalyst waste ranged from 0.33-76.08 wt% and 5.00-22.00 wt%, respectively. The carbon contents of calcinated and oxidized materials showed below 20 wt%. The sulfur content showed below 8wt% for calcinated material and below 0.22 wt% for oxidized material.
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KEYWORD
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Waste catalyst, Calcinated material, Oxidized material, Recycling in-process product
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