Degradation of Selected Indoor Air Pollutants: Comparison Study of Photocatalytic, Ozone-Assisted Photocatalytic and  Amine Adsorption Processes

doi:10.1007/s12204-012-1224-x

Abstract

Abstract: Abstract: Indoor air pollutants impact human
health, comfort and productivity. The method of photocatalysis has
been applied mainly in flow reactors and little information is
available on indoor air pollutant removal in airtight reactors. In
the paper, experiments were carried out to remove formaldehyde
(HCHO), ammonia (NH_3) and volatile organic compounds (VOCs) in
the airtight and ventilated chambers. Results demonstrated that
90.4% of HCHO, 92.3% of NH_3 and 57.9% of VOCs were
removed in the amine adsorption process, while 67.5%
(hereinbefore, these are the mass fraction) of HCHO, 60.0% of
NH_3, and 61.2% of VOCs were removed in the photocatalytic
process. However, ozone-assisted photocatalytic process showed great
potential to degrade indoor air pollutants in the ventilated
chamber. Factors and mechanisms of the photocatalytic degradation of
HCHO, NH_3 and VOCs were also discussed.

Key words: TiO_2 photocatalysis| ozone-assisted photocatalysis|amine adsorption process| indoor air pollutants

摘要： Abstract: Indoor air pollutants impact human
health, comfort and productivity. The method of photocatalysis has
been applied mainly in flow reactors and little information is
available on indoor air pollutant removal in airtight reactors. In
the paper, experiments were carried out to remove formaldehyde
(HCHO), ammonia (NH_3) and volatile organic compounds (VOCs) in
the airtight and ventilated chambers. Results demonstrated that
90.4% of HCHO, 92.3% of NH_3 and 57.9% of VOCs were
removed in the amine adsorption process, while 67.5%
(hereinbefore, these are the mass fraction) of HCHO, 60.0% of
NH_3, and 61.2% of VOCs were removed in the photocatalytic
process. However, ozone-assisted photocatalytic process showed great
potential to degrade indoor air pollutants in the ventilated
chamber. Factors and mechanisms of the photocatalytic degradation of
HCHO, NH_3 and VOCs were also discussed.

关键词:

TiO_2 photocatalysis| ozone-assisted photocatalysis|amine adsorption process| indoor air pollutants

CLC Number:

X511

ZHAO Wen-chang (赵文昌), CHENG Jin-ping(程金平), CHEN Ying (陈颖), WANG Wen-hua (王文华). Degradation of Selected Indoor Air Pollutants: Comparison Study of Photocatalytic, Ozone-Assisted Photocatalytic and Amine Adsorption Processes[J]. Journal of shanghai Jiaotong University (Science), 2012, 17(1): 13-019.

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Degradation of Selected Indoor Air Pollutants: Comparison Study of Photocatalytic, Ozone-Assisted Photocatalytic and Amine Adsorption Processes

Degradation of Selected Indoor Air Pollutants: Comparison Study of Photocatalytic, Ozone-Assisted Photocatalytic and Amine Adsorption Processes

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