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Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor

The formation of biogas in an anaerobic digester is a complex fermentation process of organic compounds involving microorganisms. The biogas production can be enhanced by using a mixer, which depends on its rotational speed. This study investigated the effect of mixer rotational speed on biogas p...

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Main Authors: Sinaga, Nazaruddin, Hatta, Kurnia, Ahmad, Nurjehan Ezzatul, Mel, Maizirwan
Format: Article
Language:English
Published: Penerbit Akademia Baru 2018
Subjects:
TP155 Chemical engineering
TP248.13 Biotechnology
TP751 Gas industry
Online Access:http://irep.iium.edu.my/71228/1/71128_Effect%20of%20Rushton%20Impeller%20Speed.pdf
http://irep.iium.edu.my/71228/
http://www.akademiabaru.com/doc/ARBBV3_N1_P9_18.pdf
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spelling my.iium.irep.712282019-07-12T07:06:50Z http://irep.iium.edu.my/71228/ Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor Sinaga, Nazaruddin Hatta, Kurnia Ahmad, Nurjehan Ezzatul Mel, Maizirwan TP155 Chemical engineering TP248.13 Biotechnology TP751 Gas industry The formation of biogas in an anaerobic digester is a complex fermentation process of organic compounds involving microorganisms. The biogas production can be enhanced by using a mixer, which depends on its rotational speed. This study investigated the effect of mixer rotational speed on biogas production in an anaerobic continuous stirred bioreactor with a computational approach. The purpose of this study is to find the optimum speed of the mixer that produces the highest biogas production. The finite volume method is used to simulate the synthropic digestion process experienced by volatile fatty acids in a three-phase form. The mixer used is from the Rushton impeller type, which rotates with speed variations of 50, 70, 100, 150, 200, and 300 rpm. The process takes place at temperature of 37o C in a bioreactor with a diameter of 125 mm and high of 165 mm, with a substrate volume of 2000 ml. Chemical reactions and thermohydraulic formulations were carried out using the species transport, multiphase Eulerian model, and k- RNG turbulence model. It was found that the mixer speed had a significant effect on the rate of biogas production, which at a speed of 200 rpm gives the highest production rate of methane and carbon dioxide but the lowest hydrogen. It is concluded that there is an optimum rotational speed in the stirring process, which gives maximum biogas production. Penerbit Akademia Baru 2018-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/71228/1/71128_Effect%20of%20Rushton%20Impeller%20Speed.pdf Sinaga, Nazaruddin and Hatta, Kurnia and Ahmad, Nurjehan Ezzatul and Mel, Maizirwan (2018) Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor. Journal of Advanced Research in Biofuel and Bioenergy, 3 (1). pp. 9-18. ISSN 2600-8459 http://www.akademiabaru.com/doc/ARBBV3_N1_P9_18.pdf
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic TP155 Chemical engineering
TP248.13 Biotechnology
TP751 Gas industry
spellingShingle TP155 Chemical engineering
TP248.13 Biotechnology
TP751 Gas industry
Sinaga, Nazaruddin
Hatta, Kurnia
Ahmad, Nurjehan Ezzatul
Mel, Maizirwan
Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
description The formation of biogas in an anaerobic digester is a complex fermentation process of organic compounds involving microorganisms. The biogas production can be enhanced by using a mixer, which depends on its rotational speed. This study investigated the effect of mixer rotational speed on biogas production in an anaerobic continuous stirred bioreactor with a computational approach. The purpose of this study is to find the optimum speed of the mixer that produces the highest biogas production. The finite volume method is used to simulate the synthropic digestion process experienced by volatile fatty acids in a three-phase form. The mixer used is from the Rushton impeller type, which rotates with speed variations of 50, 70, 100, 150, 200, and 300 rpm. The process takes place at temperature of 37o C in a bioreactor with a diameter of 125 mm and high of 165 mm, with a substrate volume of 2000 ml. Chemical reactions and thermohydraulic formulations were carried out using the species transport, multiphase Eulerian model, and k- RNG turbulence model. It was found that the mixer speed had a significant effect on the rate of biogas production, which at a speed of 200 rpm gives the highest production rate of methane and carbon dioxide but the lowest hydrogen. It is concluded that there is an optimum rotational speed in the stirring process, which gives maximum biogas production.
format Article
author Sinaga, Nazaruddin
Hatta, Kurnia
Ahmad, Nurjehan Ezzatul
Mel, Maizirwan
author_facet Sinaga, Nazaruddin
Hatta, Kurnia
Ahmad, Nurjehan Ezzatul
Mel, Maizirwan
author_sort Sinaga, Nazaruddin
title Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
title_short Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
title_full Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
title_fullStr Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
title_full_unstemmed Effect of Rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
title_sort effect of rushton impeller speed on biogas production in anaerobic digestion of continuous stirred bioreactor
publisher Penerbit Akademia Baru
publishDate 2018
url http://irep.iium.edu.my/71228/1/71128_Effect%20of%20Rushton%20Impeller%20Speed.pdf
http://irep.iium.edu.my/71228/
http://www.akademiabaru.com/doc/ARBBV3_N1_P9_18.pdf
_version_ 1643619977548267520
score 13.211869

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