1 / 19

Process phase separation for methane enrichment

Process phase separation for methane enrichment. using microorganisms abilities for biogas upgrading Flensburg, 12.09.2013 Torsten Stefan, B.Sc. Bioprocess Eng. Table of Contents. Motivation Idea and Theory Experiments Results Future aspects Summary. Motivation.

gaurav
Download Presentation

Process phase separation for methane enrichment

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Process phase separation for methane enrichment using microorganismsabilities for biogas upgrading Flensburg, 12.09.2013 Torsten Stefan, B.Sc. Bioprocess Eng.

  2. Table of Contents • Motivation • Idea and Theory • Experiments • Results • Future aspects • Summary

  3. Motivation

  4. Separation of CO2 and CH4 mixtures • Water or polyglycol scrubbers • Amine scrubbers • Membrane systems • Cryogenicprocesses Economicallyfeasable in large scale (>1 MWel)

  5. Polymericmolecules Biogas process Monomers CO2, H2 H2S, NH3, N2 Volatile fattyacids CO2, H2 Formic/aceticacid, CO2, H2 CO2, CH4 digestate

  6. Hydrolysis Pictures:chemienet.info

  7. Acidogenesis

  8. Acetogenesis

  9. Methanogenesis

  10. Polymericmolecules Biogas process Monomers CO2, H2 H2S, NH3, N2 Volatile fattyacids CO2, H2 Formic/aceticacid, CO2, H2 CO2, CH4 digestate

  11. CO2solubility in water physical chemical

  12. Polymericmolecules Biogas process Monomers CO2, H2 H2S, NH3, N2 Volatile fattyacids CO2, H2 Formic/aceticacid, CO2, H2 CO2, CH4 digestate

  13. Experiments

  14. Results Substrate: Sugar-Cellulose-Mixture

  15. Results Substrate: Sour cheese whey

  16. Results Substrate: Pig-Manure

  17. ResultsfromLiterature Substrate: Soybean Processing Wastewater Resource: Zhu, G.F. ; Li, J.Z. ; Wu, P. ; Jin, H.Z. ; Wang, Z.: The performanceandphaseseparatedcharacteristicsof an anaerobicbaffledreactortreatingsoybeanproteinprocessingwastewater. In:Bioresourcetechnology 99 (2008), Nr. 17, S. 8027–8033

  18. Next steps • Examinemixturesofmanureandsouringsubstrates • Investigate semi-aerobichydrolysis • Upscalingto 200 L / 2 m³ • Prooveapplicabilityto STR cascades

  19. Summary • Phase separationusesnaturalsequencedbiogasprocessformethaneenrichment • Methanefractionupto 85% • Relatively simple andcheaptechnology • Enhancesenergystoragecapacitythroughhighermethanecontent • Applicableto STR cascades • Problems: slowlyhydrolysiblesubstratesandsubstrateswithhighalkalinity in mono-fermentation

More Related