Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support

Ken Hosoya, Kazuhiro Kumata, Koushi Fukunishi, Nobuo Tanaka, Donald George Jr Patterson, Louis R. Alexander, Elizabeth R. Barnhart, John Barr

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We used a hydrophobic solid support, octadecylsilylated silica gel (C18) packed in a quartz column as a reaction medium for the photolysis of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) and 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). When we exposed the column to a 450 W UV lamp, the adsorbed 1,2,3,4-TCDD or 2,3,7,8-TCDD in 10% 2-propanol/water decomposed completely in 20 minutes and 5 minutes, respectively. The large estimated partition coefficient of 1,2,3,4-TCDD in 10% 2-propanol/water (>1000) indicates that on the C18 stationary phase, both the saturated hydrocarbon chains and the absorbed 2-propanol may act as proton donors and accelerate the photolysis. In direct sunlight, the adsorbed 1,2,3,4-TCDD in 10% 2-propanol/water decomposed much faster than in a nonaqueous solvent (50% 2-propanol/methanol). This solvent effect is advantageous for the practical use of the C18 photolysis process in aqueous waste treatment. We have demonstrated that complete C18 trapping with continuous photodecomposition of TCDD contained in an aqueous alcohol waste is possible.

Original languageEnglish (US)
Pages (from-to)3687-3698
Number of pages12
JournalChemosphere
Volume31
Issue number7
DOIs
StatePublished - Jan 1 1995

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Propanol
dioxin
alcohol
2-Propanol
Alcohols
Photolysis
Water
photolysis
water
Ultraviolet lamps
Waste treatment
Silica gel
Quartz
Protons
Methanol
Silica Gel
Hydrocarbons
1,4-dioxin
Polychlorinated Dibenzodioxins
Sunlight

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry
  • Environmental Science(all)

Cite this

Hosoya, K., Kumata, K., Fukunishi, K., Tanaka, N., Patterson, D. G. J., Alexander, L. R., ... Barr, J. (1995). Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support. Chemosphere, 31(7), 3687-3698. https://doi.org/10.1016/0045-6535(95)00218-W
Hosoya, Ken ; Kumata, Kazuhiro ; Fukunishi, Koushi ; Tanaka, Nobuo ; Patterson, Donald George Jr ; Alexander, Louis R. ; Barnhart, Elizabeth R. ; Barr, John. / Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support. In: Chemosphere. 1995 ; Vol. 31, No. 7. pp. 3687-3698.
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title = "Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support",
abstract = "We used a hydrophobic solid support, octadecylsilylated silica gel (C18) packed in a quartz column as a reaction medium for the photolysis of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) and 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). When we exposed the column to a 450 W UV lamp, the adsorbed 1,2,3,4-TCDD or 2,3,7,8-TCDD in 10{\%} 2-propanol/water decomposed completely in 20 minutes and 5 minutes, respectively. The large estimated partition coefficient of 1,2,3,4-TCDD in 10{\%} 2-propanol/water (>1000) indicates that on the C18 stationary phase, both the saturated hydrocarbon chains and the absorbed 2-propanol may act as proton donors and accelerate the photolysis. In direct sunlight, the adsorbed 1,2,3,4-TCDD in 10{\%} 2-propanol/water decomposed much faster than in a nonaqueous solvent (50{\%} 2-propanol/methanol). This solvent effect is advantageous for the practical use of the C18 photolysis process in aqueous waste treatment. We have demonstrated that complete C18 trapping with continuous photodecomposition of TCDD contained in an aqueous alcohol waste is possible.",
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Hosoya, K, Kumata, K, Fukunishi, K, Tanaka, N, Patterson, DGJ, Alexander, LR, Barnhart, ER & Barr, J 1995, 'Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support', Chemosphere, vol. 31, no. 7, pp. 3687-3698. https://doi.org/10.1016/0045-6535(95)00218-W

Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support. / Hosoya, Ken; Kumata, Kazuhiro; Fukunishi, Koushi; Tanaka, Nobuo; Patterson, Donald George Jr; Alexander, Louis R.; Barnhart, Elizabeth R.; Barr, John.

In: Chemosphere, Vol. 31, No. 7, 01.01.1995, p. 3687-3698.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Photodecomposition of 1,2,3,4- and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in water-alcohol media on a solid support

AU - Hosoya, Ken

AU - Kumata, Kazuhiro

AU - Fukunishi, Koushi

AU - Tanaka, Nobuo

AU - Patterson, Donald George Jr

AU - Alexander, Louis R.

AU - Barnhart, Elizabeth R.

AU - Barr, John

PY - 1995/1/1

Y1 - 1995/1/1

N2 - We used a hydrophobic solid support, octadecylsilylated silica gel (C18) packed in a quartz column as a reaction medium for the photolysis of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) and 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). When we exposed the column to a 450 W UV lamp, the adsorbed 1,2,3,4-TCDD or 2,3,7,8-TCDD in 10% 2-propanol/water decomposed completely in 20 minutes and 5 minutes, respectively. The large estimated partition coefficient of 1,2,3,4-TCDD in 10% 2-propanol/water (>1000) indicates that on the C18 stationary phase, both the saturated hydrocarbon chains and the absorbed 2-propanol may act as proton donors and accelerate the photolysis. In direct sunlight, the adsorbed 1,2,3,4-TCDD in 10% 2-propanol/water decomposed much faster than in a nonaqueous solvent (50% 2-propanol/methanol). This solvent effect is advantageous for the practical use of the C18 photolysis process in aqueous waste treatment. We have demonstrated that complete C18 trapping with continuous photodecomposition of TCDD contained in an aqueous alcohol waste is possible.

AB - We used a hydrophobic solid support, octadecylsilylated silica gel (C18) packed in a quartz column as a reaction medium for the photolysis of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) and 1,2,3,4-tetrachlorodibenzo-p-dioxin (1,2,3,4-TCDD). When we exposed the column to a 450 W UV lamp, the adsorbed 1,2,3,4-TCDD or 2,3,7,8-TCDD in 10% 2-propanol/water decomposed completely in 20 minutes and 5 minutes, respectively. The large estimated partition coefficient of 1,2,3,4-TCDD in 10% 2-propanol/water (>1000) indicates that on the C18 stationary phase, both the saturated hydrocarbon chains and the absorbed 2-propanol may act as proton donors and accelerate the photolysis. In direct sunlight, the adsorbed 1,2,3,4-TCDD in 10% 2-propanol/water decomposed much faster than in a nonaqueous solvent (50% 2-propanol/methanol). This solvent effect is advantageous for the practical use of the C18 photolysis process in aqueous waste treatment. We have demonstrated that complete C18 trapping with continuous photodecomposition of TCDD contained in an aqueous alcohol waste is possible.

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