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Biogas production by encapsulated digesting bacteria
University of Borås, School of Engineering. (Swedish Centre for Resource Recovery)ORCID iD: 0000-0003-4887-2433
2012 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 7, no 1, p. 56-65Article in journal (Refereed) Published
Sustainable development
The content falls within the scope of Sustainable Development
Abstract [en]

Encapsulation of methane producing bacteria was performed to enhance the rate of biogas production, using natural as well as synthetic membranes. A one-step liquid-droplet-forming method was employed for the natural membrane, resulting in spherical capsules with an average diameter and a membrane thickness of 4.3 and 0.2 mm, respectively. The capsules were made from alginate, with chitosan or Ca2+ as counter-ions, with addition of carboxymethylcellulose (CMC). For synthetic capsules, the Durapore® membrane (hydrophilic PVDF), with a pore size of 0.1 µm, was used for capsules of the sizes 3×3 and 3×6 cm, holding the bacteria. During the digesting process the dissolved substrates penetrated through the capsule membranes, and biogas developed inside the capsules, escaping by diffusion. The results indicate that encapsulation is a promising method of digestion, with a high density of anaerobic bacteria. The method holds a considerable potential for further development of membranes and their applications.

Place, publisher, year, edition, pages
North Carolina State University, College of Natural Resources , 2012. Vol. 7, no 1, p. 56-65
Keywords [en]
Biotechnology
National Category
Industrial Biotechnology Chemical Engineering
Research subject
Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-3201ISI: 000304041200007Local ID: 2320/9654OAI: oai:DiVA.org:hb-3201DiVA, id: diva2:871298
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-01Bibliographically approved

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http://www.ncsu.edu/bioresources/BioRes_07/BioRes_07_1_0056_Youngsukkasem_RT_Biogas_Prod_Encap_Bacteria_2117.pdf

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Taherzadeh, Mohammad J.

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