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Research shows one-step process can remove bio-gas impurities


March 9, 2008
By Manure Manager

Results from recent research
conducted by Guild Associates show the company’s pressure swing
absorption (PSA) system can remove water, carbon dioxide (CO2) and
hydrogen sulfide (H2S) impurities in a single processing step.

Results from recent research conducted by Guild Associates show the company’s pressure swing absorption (PSA) system can remove water, carbon dioxide (CO2) and hydrogen sulfide (H2S) impurities in a single processing step.

The Ohio based technology consulting company conducted the field trial
using a digester facility on a large dairy. During the trial, 3000ppm of hydrogen sulfide was removed from the generated methane, resulting in
the bio-gas meeting pipeline specifications. In an earlier trial, the company showed that water and carbon dioxide could also be removed through a single step process.

The process works by compressing the bio-gas to 100psig at which point
the PSA system removes the water, CO2 and H2S. A major feature of the process is the ability to meet pipeline specifications regardless of the feed composition.

www.guildassociates.com


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