Determination and Sorting of Asbestos-Containing Material by Visual Observation
American Journal of Environmental Protection
Volume 3, Issue 5, October 2014, Pages: 275-282
Received: Oct. 31, 2014; Accepted: Nov. 5, 2014; Published: Nov. 20, 2014
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Authors
Hiroshi Asakura, Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, Nagasaki, Japan
Mikio Kawasaki, Center for Environmental Science in Saitama, Saitama, Japan
Kazuyuki Suzuki, Center for Environmental Science in Saitama, Saitama, Japan
Kei Nakagawa, Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, Nagasaki, Japan
Yoichi Watanabe, Center for Environmental Science in Saitama, Saitama, Japan
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Abstract
A rapid method for the determination of asbestos fiber at an intermediate treatment facility for construction and demolition waste (CDW) is required. Although the rapid method which involves visual observation has been developed, the determination accuracy and time are unknown. The purpose of this study was to determine the identification rate of asbestos-containing material (ACM: > 0.1w%), the time required for asbestos fiber determination by visual observation, and the asbestos content in CDW. After participating in a short training course for ACM determination, persons who did not have any knowledge of asbestos fiber determination were able to determine ACM in CDW by visual observation. Using the results of visual observation, an ACM sorting model was formulated. The model enabled simulation of asbestos content after sorting by inputting asbestos content distribution into CDW before sorting. However, 0.35 w% of asbestos still remained in the non-ACM fraction, i.e., the content was > 0.1 w%. The relationship between the number of sorters and the total sorting time for disaster waste from the Great East Japan Earthquake was presented. It was found that a very long time and a large number of people were required for sorting.
Keywords
Asbestos, Construction and Demolition Waste, Visual Observation, Sorting
To cite this article
Hiroshi Asakura, Mikio Kawasaki, Kazuyuki Suzuki, Kei Nakagawa, Yoichi Watanabe, Determination and Sorting of Asbestos-Containing Material by Visual Observation, American Journal of Environmental Protection. Vol. 3, No. 5, 2014, pp. 275-282. doi: 10.11648/j.ajep.20140305.21
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