The authors are solely responsible for the content of this technical presentation. The technical presentation does not necessarily reflect the official position of the American Society of Agricultural and Biological Engineers (ASABE), and its printing and distribution does not constitute an endorsement of views which may be expressed. Technical presentations are not subject to the formal peer review process by ASABE editorial committees; therefore, they are not to be presented as refereed publications. Citation of this work should state that it is from an ASABE meeting paper. EXAMPLE: Author's Last Name, Initials. 2010. Title of Presentation. ASABE Paper No. 10----. St. Joseph, Mich.: ASABE. For information about securing permission to reprint or reproduce a technical presentation, please contact ASABE at rutter@asabe.org or 269-429-0300 (2950 Niles Road, St. Joseph, MI 49085-9659 USA). An ASABE Meeting Presentation Paper Number: 1009782 Purification of Hydrogen from a Thermo-chemical Process using a Single-Column Pressure Swing Adsorption System with Compound Adsorbent. E. Teiseh and S. Capareda Written for presentation at the 2010 ASABE Annual International Meeting Sponsored by ASABE David L. Lawrence Convention Center Pittsburgh, Pennsylvania June 20 – June 23, 2010 Abstract The thermo-chemical conversion of industrial sludge at atmospheric pressure and temperatures as a high as 750 degrees Celsius generates synthesis gas with the approximate per cent composition (volume basis): hydrogen, 45; carbon monoxide, 35; methane, 20. With these three gases as adsorbates, a single-bed pressure swing adsorption (PSA) system with activated carbon and molecular sieve 5Å as adsorbents has been used to purify hydrogen to a per cent purity of 99.9999 %. This purity was the same for feed rates of 7 and 10 liters per minute at operating pressures of 45, 90 and 103 psi. The per cent recovery (productivity) varied from 22.7±0.6 at a pressure of 45 psi and a feed flow rate of 10 L/minute to 85.4±0.3 at a pressure of 103 psi for a feed flow rate of 10 L/minute. The maximum throughput (rate of hydrogen produced) was 3.84±0.01 when the pressure was 103 psi at a federate of 10 L/min. This work shows that with effective regeneration an alternation between two adsorbent beds can be used to separate methane and carbon monoxide from a mixture containing hydrogen with a volumetric concentration as low as 45 versus 60 volume per cent using PSA units with multiple beds. Key words: thermo-chemical, single-bed, adsorbent, adsorbates, PSA, purity, recovery, throughput. ------------------------------------------------------------------------------------------------------------