slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Effect of Atmospheric SO x on Aminosilica Adsorbents for Air Capture PowerPoint Presentation
Download Presentation
Effect of Atmospheric SO x on Aminosilica Adsorbents for Air Capture

Loading in 2 Seconds...

play fullscreen
1 / 11

Effect of Atmospheric SO x on Aminosilica Adsorbents for Air Capture - PowerPoint PPT Presentation


  • 198 Views
  • Uploaded on

Effect of Atmospheric SO x on Aminosilica Adsorbents for Air Capture. Steph Didas EAS 6410 April 26, 2012. Air Capture Technologies & CO 2 Adsorption Mechanism. Solid Adsorbents. CO 2 rich air. amine-oxide. Regeneration. Sorbent regen & CO 2 recovery. CO 2 lean air.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Effect of Atmospheric SO x on Aminosilica Adsorbents for Air Capture' - viet


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Effect of Atmospheric SOx on Aminosilica Adsorbents for Air Capture

  • Steph Didas
  • EAS 6410
  • April 26, 2012
air capture technologies co 2 adsorption mechanism
Air Capture Technologies & CO2 Adsorption Mechanism

Solid Adsorbents

CO2 rich air

amine-oxide

Regeneration

Sorbent regen &

CO2 recovery

CO2 lean air

CO2-amine-oxide

CO2

CO2 removal from air

Caplow, J. Am. Chem. Soc., 1968.

Donaldson & Nguyen, Ind. Eng. Chem. Fundam., 1980.

supported amine adsorbents
Supported Amine Adsorbents

Class 1:

High amine content

Not stable

Class 2:

Low amine content

Stable

Class 3:

High amine content

Stable

Class 1: Physical impregnation

Class 2: Covalent tethering

Class 3: In situ polymerization

Li et al., ChemSusChem, 2010.

Bollini et al., J. Mater. Chem., 2011.

sorbent degradation from so x in flue gas streams
Sorbent Degradation from SOx in Flue Gas Streams

DRIFTS absorbance spectra during SO2 adsorption

DRIFTS absorbance spectra during SO2 temperature programmed desorption

SO2 irreversibly adsorbs forming heat stable corrosive salts

Flue gas SO2 concentrations 500-2000 ppm  What happens at air capture concentrations?

Khatri et al., Energy Fuels, 2006.

objective of study
Objective of Study

Estimate adsorbent deactivation due to SOx concentrations in the atmosphere based on reported data for flue gas degradation

6

adsorption mechanism proposed model
Adsorption Mechanism & Proposed Model

K

RNH2 + SO2

RNH2+ + SO2-

  • Assumptions:
  • [SO2] is equal to feed concentration due to constant supply
  • [RNH2+] = [SO2-] due to 1:1 stoichiometric ratio

Belmabkhout & Sayari, Energy Fuels, 2010.

Diaf et al., J. Appl. Polym. Sci., 1994.

so 2 trends atlanta
[SO2] Trends: Atlanta

Upper limit: 45 ppb

Lower limit: 5 ppb

so 2 trends pittsburgh
[SO2] Trends: Pittsburgh

Upper limit: 250 ppb

Lower limit: 5 ppb

atmospheric so 2 adsorption results
Atmospheric SO2 Adsorption Results

SO2 adsorption/degradation potential very low at harshest atmospheric conditions

Can set up capture stations at locations with less extreme variation

summary future work
Summary & Future Work
  • Atmospheric SOx degradation location dependent
    • Should set up air capture station in low pollution area
    • NOx degradation studies needed
      • Flue gas streams 2500-1500 ppm vs. atmospheric levels of 80-5 ppb
      • More complicated mechanism  data needed for additional products