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Keeping good separation properties of spiral wound membrane module for carbon dioxide separation from raw biogas
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SYSNO ASEP 0576819 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Keeping good separation properties of spiral wound membrane module for carbon dioxide separation from raw biogas Tvůrce(i) Morávková, Lenka (UCHP-M) RID, SAI
Šnajdaufová, Hana (UCHP-M) RID, SAI
Petrusová, Zuzana (UCHP-M) RID, ORCID, SAI
Kaštánek, František (UCHP-M) RID, SAI, ORCID
Šolcová, Olga (UCHP-M) RID, ORCID, SAIVyd. údaje Padova: EUROWASTE, 2023 Číslo článku F03 Zdroj.dok. Symposium Proceedings. - Padova : EUROWASTE Srl, 2023 - ISSN 2282-0027 - ISBN 9788862650335 Poč.str. 7 s. Forma vydání Nosič - C Akce International Symposium on Waste Management and Suustainable Landfilling SARDINIA 2023 Datum konání 09.10.2023 - 13.10.2023 Místo konání Cagliari Země IT - Itálie Typ akce EUR Jazyk dok. eng - angličtina Země vyd. IT - Itálie Klíč. slova biogas ; carbon dioxide ; membrane separation Obor OECD Chemical process engineering CEP TN02000044 GA TA ČR - Technologická agentura ČR Institucionální podpora UCHP-M - RVO:67985858 Anotace Concerning current energetic situation all over the word, renewable energy sources are demanded. Raw biogas is the product of biochemical process of biomass and can be obtained for example from sewage plant or agro processes. Biogas is one interesting candidate as a gaseous biofuel that can partially replace fossil fuels. Except membrane separation process, biogas upgrading can be realised via various methods such as water scrubbing, polyethylene glycol scrubbing, absorption of contaminants using molecular sieves, or pressure-swing absorption. The heating value of biofuel is improved when the carbon dioxide is removed successfully from raw biogas. Bio-methane is utilized then as CNG car fuel or for heating of a greenhouse or a farm. Another important fact is various possibility for using separated carbon dioxide in various applications such as supercritical extraction of biological materials or growing algae. Therefore, the biogas upgrading is almost zero-waste process when membrane separation is applied. Carbon dioxide can be removed from a raw biogas via membrane separation based on the commercially available spiral wound membrane module. The selective layer is usually polyamide thin film on the top of porous support in the membrane module. The selective layer is swollen by water presented in raw biogas as well as water-controlled amount of water vapour from humidifier. Carbon dioxide is then preferentially transported through the membrane thanks to a significantly higher solubility in water than that of methane. The key factor is continuous refreshing of selective layer by water from a feed stream and diffusing to the permeate stream. In time, water over-saturation can happen by a sorbed molecules of carbon dioxide. Another process complication is a partly drying of a membrane during continuous running of the
separation with time. Therefore, the separation properties of the membrane modules can be lost. However, such a problem was easily solved by a membrane module refreshing by a flush out the water over-saturated by carbon dioxide. Therefore, biogas purification can be a continuous process when at least two membrane modules are used: one separates raw biogas while another one is refreshed.Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2024 Elektronická adresa https://hdl.handle.net/11104/0346216
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