TY - JOUR
T1 - Toward effective design and adoption of catalyst-based filter for indoor hazards
T2 - Formaldehyde abatement under realistic conditions
AU - Han, Kwang Hoon
AU - Zhang, Jensen S.
AU - Guo, Bing
N1 - Funding Information:
The authors gratefully acknowledge the financial support for the present study from New York State Energy Research and Development Authority (NYSERDA), Carrier Corporation and Syracuse University. We also thank you for their efforts to Chuan He in making the prototype filter and to Dr. Zhi Gao in setting up the initial full-scale chamber experiments.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Catalytic oxidation at ambient temperature has drawn wide attention as a new promising method of air cleaning, converting hazardous materials into non-hazardous ones. However, limited information is available regarding catalytic filter performance/characteristics under real operating conditions, especially on service efficiency and byproducts. Also, no practical scale-up method/evidence for filter performance evaluation is currently available to scale-up laboratory results to real application conditions. These limitations and knowledge gaps prevent building owners/designers from adopting this new promising technique in their commercial/industrial applications. The present study conducted experiments from small-scale to full-scale chamber tests which challenged a developed catalytic filter under realistic conditions. Formaldehyde was selected for approach demonstration due to its indoor ubiquitousness and criticality for human health even at low-levels. Results showed that the competition level for reaction sites in filter media had a crucial role in the performance for formaldehyde abatement, a high initial (77%; under no competing pollutants) to a typical stable level (23–32%), depending on the coexistence of other pollutants and moisture in the air, that the employment of this type of filter might generate byproducts (opposite to previous literature reports), and that small-scale column tests represented a good indication for large-scale filter performance as a practical screening method.
AB - Catalytic oxidation at ambient temperature has drawn wide attention as a new promising method of air cleaning, converting hazardous materials into non-hazardous ones. However, limited information is available regarding catalytic filter performance/characteristics under real operating conditions, especially on service efficiency and byproducts. Also, no practical scale-up method/evidence for filter performance evaluation is currently available to scale-up laboratory results to real application conditions. These limitations and knowledge gaps prevent building owners/designers from adopting this new promising technique in their commercial/industrial applications. The present study conducted experiments from small-scale to full-scale chamber tests which challenged a developed catalytic filter under realistic conditions. Formaldehyde was selected for approach demonstration due to its indoor ubiquitousness and criticality for human health even at low-levels. Results showed that the competition level for reaction sites in filter media had a crucial role in the performance for formaldehyde abatement, a high initial (77%; under no competing pollutants) to a typical stable level (23–32%), depending on the coexistence of other pollutants and moisture in the air, that the employment of this type of filter might generate byproducts (opposite to previous literature reports), and that small-scale column tests represented a good indication for large-scale filter performance as a practical screening method.
KW - Formaldehyde abatement
KW - Full-scale chamber test
KW - Manganese oxide catalyst
KW - PTR-MS
KW - Room-temperature oxidation
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U2 - 10.1016/j.jhazmat.2017.02.021
DO - 10.1016/j.jhazmat.2017.02.021
M3 - Article
C2 - 28257921
AN - SCOPUS:85014027077
SN - 0304-3894
VL - 331
SP - 161
EP - 170
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -