Advances in environmental research

  • 제1권4호
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  • Pages.289-304
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  • 2012
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  • 2234-1722(pISSN)
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  • 2234-1730(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Performance assessment of {tris (2-methyl-1-aziridinyl) phosphine oxide} photocatalytic mineralization in a falling film reactor, using response surface methodology

  • Saien, J. (Department of Applied Chemistry, Bu-Ali Sina University) ;
  • Raeisi, A. (Department of Applied Chemistry, Bu-Ali Sina University) ;
  • Soleymani, A.R. (Department of Applied Chemistry, Malayer University) ;
  • Norouzi, M. (Department of Applied Chemistry, Bu-Ali Sina University)
  • 투고 : 2012.06.30
  • 심사 : 2012.12.12
  • 발행 : 2012.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Tris (2-methyl-1-aziridinyl) phosphine oxide (MAPO) is extremely poisonous and persistent in aqueous media. An efficient UV/nano$TiO_2$ process was employed for its mineralization in a high duty falling film photo-reactor based on an experimental design scheme that considers interactions between the main variables. The influencing variables and their range were determined with preliminary studies. The results show substrate mineralization to some extent under mild conditions of: T = $30^{\circ}C$, pH = 8.5, $[MAPO]_0=60\;mg\;L^{-1}$ and $[TiO_2]=110\;mg\;L^{-1}$. The relative importance of the influencing parameters were initial pH > temperature > $[MAPO]_0$ > [$TiO_2$]; while the interdependence of all the parameters was significant. Accordingly, a reduced quadratic expression was developed. Meanwhile, mineralization kinetic studies, based on chemical oxygen demand, revealed a power law model with order of 2.6 during process time until 150 min.

키워드

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