Keeping good separation properties of spiral wound membrane module for carbon dioxide separation from raw biogas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F23%3A00576819" target="_blank" >RIV/67985858:_____/23:00576819 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0346216" target="_blank" >https://hdl.handle.net/11104/0346216</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Keeping good separation properties of spiral wound membrane module for carbon dioxide separation from raw biogas

Popis výsledku v původním jazyce

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 thenseparation 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.

Název v anglickém jazyce

Keeping good separation properties of spiral wound membrane module for carbon dioxide separation from raw biogas

Popis výsledku anglicky

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 thenseparation 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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/TN02000044" target="_blank" >TN02000044: Biorafinace a cirkulární ekonomika pro udržitelnost</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Symposium Proceedings

ISBN

9788862650335

ISSN

2282-0027

e-ISSN

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Počet stran výsledku

7

Strana od-do

F03

Název nakladatele

EUROWASTE Srl

Místo vydání

Padova

Místo konání akce

Cagliari

Datum konání akce

9. 10. 2023

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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