Dechlorination Treatment of Polyvinyl Chloride

• ENOMOTO Heiji

  Tohoku University, Faculty of Engineering

• HATAKEYAMA Atsushi

  Tohoku University

• KATO Yoshishige

  National Institute for Resources and Environment

Bibliographic Information

Other Title

• 高温熱水によるポリ塩化ビニル廃棄物の脱塩素化処理

Abstract

As one of the new means of safe treatment of polyvinyl chloride wastes, reaction conditions of dechlorination in hot water at up to 400°C were investigated. Results may be summarized as follows.<BR>1) Dechlorination can be done by a one hour reaction in hot water at sub-critical conditions over 300°C, and by a 20 hour reaction at 250°C, with presence of metal iron, or in alkaline solution.<BR>2) With metal iron, the dechlorination reaction is dominant and decomposition reaction seems not to proceed, so that the residue is a dechlorinated solid.<BR>3) In alkaline solution, dechlorination and hydration reactions proceed simultaneously so that the main reaction products are water-soluble or in-soluble liquids, and little solid residue remains.<BR>4) With metal iron in alkaline solution, the dechlorination reaction is dominant, but at supercritical conditions decomposition reaction easily occurs.

Journal

• Journal of the Japan Society of Waste Management Experts

  Journal of the Japan Society of Waste Management Experts 6 (1), 16-22, 1995

  Japan Society of Material Cycles and Waste Management

Keywords

• polyvinyl chloride
• subcritical condition
• hydrothermal reaction
• disposal
• medical wastes

Details

• CRID: 1390282680273506176
• NII Article ID: 10002081974
• NII Book ID: AN10414685
• DOI: 10.3985/jswme.6.16
• ISSN: 1883163X
• ISSN: 18831648
• ISSN: http://id.crossref.org/issn/0956053X
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed