書誌事項
- タイトル別名
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- Decompression and Recovery of Chlorinated Ethylene Solvent Treated by Activated Carbon Adsorption-Supercritical CO2 Extraction.
- 有機塩素系溶剤の活性炭吸着--超臨界二酸化炭素抽出処理における減圧,回収方法
- ユウキ エンソケイ ヨウザイ ノ カッセイタン キュウチャク チョウリンカイ 2サンカタンソ チュウシュツ ショリ ニ オケル ゲンアツ カイシュウ ホウホウ
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抄録
When a chlorinated ethylene solvent such as trichloroethylene (TCE) or tetrachloroethylene (PCE) in aqueous solution is adsorbed on activated carbon and then extracted with supercritical carbon dioxide, unlike steam desorption, the recovered solvent may not contain hydrolyzates or water which lead to problems during recycling. However a solvent with high volatility becomes a problem regarding recovery at low pressure of supercritical carbon dioxide. The recovery of solvent by decompressing and cooling was thus studied. Optimal conditions for extraction were 100kg · cm-2 pressure at 35°C, and for recovery, 10kg · cm-2 pressure at -30°C. In the case of TCE, slight dispersion was observed, but carbon dioxide with little dispersed TCE could be compressed and reused for extraction of TCE from activated carbon. For PCE, there was little dispersion. Solvent recovered from activated carbon in aqueous solution contained water. On decompressing the supercritical fluid being passed through a zeolite layer immediately after extraction, solvent having the same IR spectrum as the original solvent spectrum was recovered.
収録刊行物
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- 水環境学会誌
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水環境学会誌 23 (1), 41-45, 2000
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390282680058988544
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- NII論文ID
- 10007660431
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- NII書誌ID
- AN10372439
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- COI
- 1:CAS:528:DC%2BD3cXhvVWqs7g%3D
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- ISSN
- 18813690
- 09168958
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- NDL書誌ID
- 4960628
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可