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Formaldehyde Detection and Removal in Direct Alcohol Fuel Cell Effluent

Formaldehyde Detection and Removal in Direct Alcohol Fuel Cell Effluent. Jenna Simandl, Civil Engineering, University of Alabama Cuong Diep , Chemical Engineering, University of Cincinnati Sidney Stacy, Biomedical Engineering, University of Cincinnati. NSF Grant ID No:DUE-0756921.

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Formaldehyde Detection and Removal in Direct Alcohol Fuel Cell Effluent

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  1. Formaldehyde Detection and Removal in Direct Alcohol Fuel Cell Effluent Jenna Simandl, Civil Engineering, University of Alabama CuongDiep, Chemical Engineering, University of Cincinnati Sidney Stacy, Biomedical Engineering, University of Cincinnati NSF Grant ID No:DUE-0756921

  2. Introduction • Formaldehyde and alcohol fuel cells • Effluent and efficiency loss • Acetone - surrogate http://www.sciencedirect.com/science/article/pii/S0039914013002014 http://www.machine-history.com/Direct%20Methanol%20Fuel%20Cell

  3. Optical Sensing • Spectroscopy and Perfluorosulfonic acid (PSA) membrane http://onlinelibrary.wiley.com/doi/10.1002/polb.21639/full http://www.chem.agilent.com/en-US/products-services/instruments-systems/molecular-spectroscopy/8453-uv-vis-diode-array-system/Pages/photodiode_array_benefits.aspx

  4. Water Interference • A membrane additive has been selected to potentially mitigate water interference http://onlinelibrary.wiley.com/doi/10.1002/polb.21639/full

  5. Reactions • Acetone Reaction Scheme • Formaldehyde Reaction Scheme http://www.sciencedirect.com/science/article/pii/S0039914013002014 http://link.springer.com/article/10.1007/BF01139044

  6. Goals • Determine if the membrane additive mitigates water interference for acetone • Determine how the membrane additive is functioning • Apply feasibility testing to the detection of formaldehyde in 100% relative humidity • Develop a calibration of the membrane catalyst to formaldehyde concentrations • Test direct alcohol fuel cell effluent for formaldehyde

  7. Methods

  8. Results- 4ppmv Acetone Exposure in 100% Relative Humidity With additive How come? No additive

  9. Results- 4ppmv Acetone and Cesium Exposure with Additive 5mM Cs 10mM Cs 50mM Cs 5mM Cs, no additive

  10. Results- Initial 500 ppmv Formaldehyde Exposure in 100% Relative Humidity With additive No additive

  11. Results- Formaldehyde Exposure Calibration Points 100 ppmv 50 ppmv 0 ppmv

  12. Results- Calibration Curve

  13. Results- Shifted Sensitivity

  14. Conclusions And Future Work • The membrane additive is successful at mitigating water interference • We are able to detect acetone and formaldehyde in the presence of water • The detection method is very sensitive within a small dynamic range, that can be tailored by varying the resorcinol concentration • Apply similar approach to water abundant environment of an alcohol fuel cell effluent to determine formaldehyde concentrations

  15. Questions?

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