Lippert, Thomas

Presented at WEFTEC 2023.

Titles from this speaker

Description: Simultaneous Biogas Purification and Hydrogen Production Using a Novel...

Simultaneous Biogas Purification and Hydrogen Production Using a Novel Electrochemical Reactor

Abstract

Biomethanation is a power-to-gas technology that converts H2 and CO2 from biogas into renewable natural gas (i.e., CH4). In conventional biomethanation, H2 is produced via water electrolysis, while biogas is injected directly into the biomethanation reactor. Given that biogas contains about 65% CH4 and only about 35% CO2, the contained CH4 causes a dilution effect which limits the conversion efficiency of CO2. We propose a novel electrochemical reactor for simultaneous H2 production and CO2 capture. The captured CO2 is then routed to the downstream biomethanation reactor together with the H2, thus enabling for highly efficient biomethanation with reduced footprint.

Biomethanation converts H2 and CO2 into renewable natural gas (i.e., CH4). In conventional biomethanation, biogas is injected directly into the biomethanation reactor, which limits conversion efficiency due to the presence of inert CH4. We propose a novel electrochemical reactor which produces H2 and simultaneously separates CH4 from biogas so that only CO2 and H2 is routed to the biomethanation reactor, thus enabling efficient biomethanation with minimal footprint.

SpeakerLippert, Thomas

Presentation time

11:30:00

11:50:00

Session time

10:30:00

12:00:00

SessionBuilding A Hydrogen Future

Session locationRoom S501a - Level 5

TopicAdvanced Level, Energy Production, Conservation, and Management, Research and Innovation, Sustainability and Climate Change

Author(s)

Lippert, Thomas

Author(s)T. Lippert 1; Y. Lin 2 ; S. Masih 3; G. Wells 4; T. Lippert 1;

Author affiliation(s)Argonne National Laboratory, Applied Materials Division 2 ; Argonne National Laboratory, Applied Materials Division 3; Northwestern University, Dept. of Civil and Environmental Engineering 4; Northwestern University, Dept. of Civil and Environmental Engineering 1;

SourceProceedings of the Water Environment Federation

Document typeConference Paper

PublisherWater Environment Federation

Print publication date Oct 2023

DOI10.2175/193864718825159174

Volume / Issue

Content sourceWEFTEC

Word count12