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›› 2003, Vol. 3 ›› Issue (4): 0-0.

• 4 •    

双氧水超临界氧化对氨基苯酚模拟废水

葛红光,陈开勋,张志杰,郑岚   

  1. 1. 西安建筑科技大学环境与市政工程学院,陕西 西安 710055;2. 西北大学化工学院,陕西 西安 710069;3. 陕西理工学院化学系,陕西 汉中 723000
  • 出版日期:2003-08-20 发布日期:2003-08-20

Preparation of Organic-Inorganic Multifunctional Nanocomposite Coatings

CHEN Yun-fa, WANG Rui-ming, WU Zhen-jiang, XIE Yu-sheng   

  1. 1. Sch. Environ. & Munic. Eng., Xi¢an Univ. Architecture & Technol., Xi¢an, Shanxi 710055, China; 2. Dept. Chem. Eng., Northwest Univ., Xi¢an, Shanxi 710069, China;3. Dept. Chem., Shanxi Col. Sci. & Technol., Hanzhong, Shanxi 723000, China
  • Online:2003-08-20 Published:2003-08-20

摘要: 在连续流管式反应器中,以H2O2为氧化剂,在温度480~550℃、压力32~38 MPa及H2O2过量100%~270%的条件下,用超临界水氧化(Supercritical water oxidation,简称SCWO)对含对氨基苯酚的模拟废水进行了实验研究.结果表明,采用SCWO法能有效去除废水中的含氮有机物对氨基苯酚. 升高温度、升高压力和延长停留时间使COD去除率显著提高. 在550℃, 38 MPa, H2O2过量190%和停留时间229 s时,COD去除率高达98.5%. 在此条件下,SCWO总动力学对COD是2.13级,反应的活化能为29.3 kJ/mol.

关键词: 双氧水, 超临界水氧化, 对氨基苯酚, 废水处理, 动力学

Abstract: Oxidation of para-aminophenol in supercritical water was investigated at 480~550oC, 32~38 MPa with 100%~270% H2O2 in excess. Experiments were performed in a tubular continuous flow reactor with effective volume of 13 ml. Results indicate that para-aminophenol is easily oxidized in supercritical water. The COD elimination efficiency is significantly improved as reaction temperature, pressure or residence time is increased. 98.5% COD removal was obtained in 229 s at 550oC, 38 MPa with 190% H2O2 in excess. In this case, the global kinetics for COD was 2.13 order. The activation energy was 29.3 kJ/mol.

Key words: organic-inorganic nanocomposite, nanosized particles, multifunctional, coating

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