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CO2-H2S separation

Suitable materials for an efficient method for carbon dioxide (CO2) cleanup for hydrogen sulfide (H2S) have been identified. The technology is based on selective adsorption/regeneration of H2S. The working principle of the sorbents has been demonstrated and a potential enrichment from 500 ppm to >20% has been indicated. The focus is on optimization of the process conditions. The CO2-H2S separation under development within the project has the potential to outperform alternative (semi-) commercial processes for H2S enrichment, especially considering low H2S containing streams (as is the case for CO2 purification). Spin-off concerns for example Claus tail gas treatment, NG treatment and biogas treatment.

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Rien Herber (University of Groningen)