Destruction of malodorous compounds using heterogeneous photocatalysis

被引：57

作者：

Canela, MC ^{[1
]}

Alberici, RM ^{[1
]}

Sofia, RCR ^{[1
]}

Eberlin, MN ^{[1
]}

Jardim, WF ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1999年 / 33卷 / 16期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1021/es980404f

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photocatalytic oxidation of the sulfur-containing compounds, trimethylene sulfide (C3H6S), propylene sulfide (C3H6S), thiophene (C4H4S), and methyl disulfide (C2H6S2), was carried out using an annular plug flow reactor with TiO2 in a supported form. Formation of products and byproducts was monitored in realtime using a mass spectrometry online system. Mineralization of the sulfur-containing compounds was confirmed by mass balance of CO2 and SO42-. Dilute contaminated atmospheres of trimethylene sulfide and propylene sulfide were completely mineralized. For thiophene and methyl disulfide, however, partial oxidation was observed, generating sulfur dioxide (SO2) and sulfur oxide (SO) as byproducts, which were confirmed by parent ion MS/MS spectra as well as by chemical ionization. Sensory analysis showed that for trimethylene sulfide and propylene sulfide, odor intensity after TiO2/UV treatment was below the olfactive threshold limit of the panel.

引用

页码：2788 / 2792

页数：5

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