ADVANCED ULTRAVIOLET FLASH LAMPS FOR THE DESTRUCTION OF ORGANIC CONTAMINANTS IN AIR

被引：0

作者：

BLYSTONE, PG ^{[1
]}

JOHNSON, MD ^{[1
]}

HAAG, WR ^{[1
]}

DALEY, PF ^{[1
]}

机构：

[1] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

来源：

ACS SYMPOSIUM SERIES | 1993年 / 518卷

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This chapter describes a new process for photo-oxidation of volatile organic compounds (VOCs) in air using an advanced ultraviolet source, a xenon flashlamp. The flashlamps have greater output at 200 - 250 nm than medium-pressure mercury lamps at the same power and therefore cause much more rapid direct photolysis of VOCs. The observation of quantum efficiencies greater than unity indicate the involvement of chain reactions for trichloroethene (TCE), perchloroethene (PCE), 1,1-dichloroethene (DCE), chloroform, and methylene chloride. A full scale air emission control system (>95% removal) for TCE has been constructed, capable of continuous treatment of at least 300 scfm with a residence time of about 2 seconds. Further treatment of photo-oxidation products is likely to be needed for chloroethenes.

引用

页码：380 / 392

页数：13

共 20 条

[1]

ADAMS JQ, 1989, J AM WATER WORKS ASS, V81, P132

[2] KINETICS OF THE GAS-PHASE REACTIONS OF CL ATOMS WITH CHLOROETHENES AT 298+/-2-K AND ATMOSPHERIC-PRESSURE [J].