Upgrading biogas to biomethane using membrane separation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F17%3A43913239" target="_blank" >RIV/60461373:22320/17:43913239 - isvavai.cz</a>

Result on the web

<a href="http://pubs.acs.org/doi/full/10.1021/acs.energyfuels.7b00120" target="_blank" >http://pubs.acs.org/doi/full/10.1021/acs.energyfuels.7b00120</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.energyfuels.7b00120" target="_blank" >10.1021/acs.energyfuels.7b00120</a>

Result language

angličtina

Original language name

Upgrading biogas to biomethane using membrane separation

Original language description

Biogas contains carbon dioxide in the range of 35–45 vol %. Upgrading biogas to biomethane is primarily based on carbon dioxide removal. Biomethane is essentially purified biogas that contains at least 95 vol % methane and it can be either used as fuel for vehicles running on compressed natural gas (CNG) or injected into the natural gas grid. Nowadays, various techniques are used for CO2 removal from biogas. Among the most commonly used technologies are adsorption, absorption, cryogenic separation, and membrane separation. Currently, in the Czech Republic, no units for biogas upgrading to biomethane are operating. In addition, during the summer months, there is heat overproduction from the co-generation units. In this work, a suitable unit for carbon dioxide separation is proposed. Carbon dioxide separation is possible using membrane separation. Along with carbon dioxide, minor compounds present in biogas such as hydrogen sulfide and water are also separated. The implementation of this unit makes it possible to obtain biomethane form biogas. Membrane separation was tested in a pilot scale using real biogas. All experimental tests were conducted at the Central Waste Water Treatment Plant in Prague. Experimental tests were performed using different types of membranes. For comparison purposes, the following membrane modules materials were chosen: polysulfone and polyimide fiber membranes. Separation of moisture and trace compounds present in biogas was tested for these two types of membrane materials. Other tests were performed using polyimide membranes. Parallel connection of membrane modules was the most effective to remove carbon dioxide from biogas. Purified biomethane contained at least 95 vol % of methane, as is required, even when the highest flow rate was applied of 7 m3 h–1 of biomethane (measuring conditions: 0.6–0.8 MPa). This small membrane separation unit is recommended for biogas units in wastewater treatment plants.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

<a href="/en/project/TA03020421" target="_blank" >TA03020421: Technological unit for limited local production od biomethane replacing fossil fuels in transportation and agriculture</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Energy &amp; Fuels

ISSN

0887-0624

e-ISSN

—

Volume of the periodical

31

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

"9393–9401"

UT code for WoS article

000411771200057

EID of the result in the Scopus database

2-s2.0-85030088425