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Reducing the agitation power consumption in anaerobic digestion of corn straw by adjusting the rheological properties
State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science. State Key Laboratory of Material-Oriented Chemical Engineering, Nanjing Tech University, Nanjing, China.ORCID iD: 0000-0001-9244-6808
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0002-0200-9960
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2019 (English)In: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 158, p. 1267-1272Article in journal (Refereed) Published
Abstract [en]

Agitation power consumption (P) in the anaerobic digestion of biogas plants is a major part of the electric energy consumption. To reduce P by adjusting the rheological properties, in this work, the rheological properties of corn straw slurry were studied systematically with the consideration of the effects of TS, temperature and particle sizes. The P was calculated based on the rheological behaviour of corn straw slurry. The investigation shows that the thermophilic digestion is effective only for the slurry with a relatively high TS. The size-reduction is more effective at higher TS compared to the option of increasing temperature in order to improve the agitation power efficiency, and the value of P can be reduced by up to 48.11 %. Since the size-reduction can also increase the methane yield, the adjustment of particle sizes is a promising option to save P, especially at higher TS.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 158, p. 1267-1272
Keywords [en]
Rheological properties, Corn straw, Anaerobic digestion, Agitation power consumption
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-73439DOI: 10.1016/j.egypro.2019.01.314OAI: oai:DiVA.org:ltu-73439DiVA, id: diva2:1302566
Conference
10th International Conference on Applied Energy (ICAE2018) August 22-25, 2018, Hong Kong.
Note

Konferensartikel i tidskrift

Available from: 2019-04-05 Created: 2019-04-05 Last updated: 2019-04-23Bibliographically approved

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Chen, JingjingLu, XiaohuaJi, Xiaoyan

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