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Single-Step Purification of Raw Biogas to Biomethane Quality by Hollow Fiber Membranes without Any Pretreatment - a Radical Innovation in Biogas Upgrading.

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    0498647 - ÚCHP 2019 RIV GB eng J - Článek v odborném periodiku
    Žák, Michal - Bendová, H. - Friess, K. - Bara, J. E. - Izák, Pavel
    Single-Step Purification of Raw Biogas to Biomethane Quality by Hollow Fiber Membranes without Any Pretreatment - a Radical Innovation in Biogas Upgrading.
    Separation and Purification Technology. Roč. 203, SEP 12 (2018), s. 36-40. ISSN 1383-5866
    Grant CEP: GA TA ČR TE01020080
    Institucionální podpora: RVO:67985858
    Klíčová slova: biogas purification * biomethane * hollow fiber membranes
    Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
    Obor OECD: Chemical process engineering
    Impakt faktor: 5.107, rok: 2018

    Herein, a radical innovation in biogas production is presented using a single-step membrane purification technology without any necessary pretreatment steps for contaminant removal and with the usage of low feed pressure. Asymmetric hollow fiber membranes with a thin, selective, non-porous layer made from polyester carbonate on the bore side were successfully used in a single-step raw biogas upgrading process at biogas plant Choťovice in the Czech Republic. A double-stage arrangement operated at 17 °C exhibited the best CO2/CH4 separation factor with 96 vol.% CH4 purity. This single-step biogas upgrading technology with highly H2S and water-resistant membrane modules allows reductions in capital expenditures of ~20% and in operational expenditures of ~50% compared to highpressure water scrubbing (HPWS) and ~70% compared to pressure swing adsorption (PSA). Due to the small energy consumption required merely for biogas compression, our units consumed around only ~2 MJ/Nm3 CH4. Thus, our approach with significantly improved performance and robustness of the membrane separation process can be seen as a major breakthrough of membrane gas separation for inexpensive biogas production.
    Trvalý link: http://hdl.handle.net/11104/0290946
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