HCl emission during co-pyrolysis of demolition wood with a small amount of PVC film and the effect of wood constituents on HCl emission reduction |
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| Authors: | Hidetoshi Kuramochi Daisuke Nakajima Sumio Goto Kazutoshi Sugita Wei Wu Katsuya Kawamoto |
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| Affiliation: | 1. Research Center for Material Cycles and Waste Management, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan;2. Research Center for Environmental Risk, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan;3. Azabu University, 1-17-71 Fuchinobe, Sagamihara, Kanagawa 229-8501, Japan;4. Dia Analysis Services Inc., 8-5-1 Thu-o, Ami, Ibaraki 300-0332, Japan;5. Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110004, PR China |
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| Abstract: | In this study, HCl emission during the co-pyrolysis of demolition wood and a small amount of polyvinyl chloride (PVC) film (the Cl content of which ranged from 0.5% to 6% by weight) in an N2 atmosphere at elevated temperatures of up to 600 °C was measured using a laboratory-scale cylindrical batch reactor. In the pyrolysis experiments, HCl emission was reduced by the presence of wood. The effect of the primary constituents of wood (cellulose, hemicellulose, and lignin) on HCl emission was investigated by not only measuring HCl emission and Cl distribution to various phases during the co-pyrolysis of each constituent with PVC film but also by conducting thermogravimetric analysis of the constituents. This investigation first revealed that hemicellulose significantly reduced HCl emission by fixing most of the Cl molecules in a sample into pyrolyzed residue. |
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