The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel

Biogas which consists of methane (CH4) and carbon dioxide (CO2) could explode when diluted to a certain degree with air in the presence of ignition source. The maximum explosion overpressure (Pmax), the maximum rate of pressure rise (dP/dt)max, flammability limits, and deflagration index are the...

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Main Authors:	Muhammad Harinder Khan, Nur Aqidah, Sulaiman, Siti Zubaidah, Izhab, Izirwan, Abdul Mudalip, Siti Kholijah, Che Man, Rohaida, Md Shaarani, Shalyda, Mohd Arshad, Zatul Iffah, Md Kasmani, Rafiziana, Sulaiman, Sarina
Format:	Article
Language:	English English
Published:	Scientific.Net 2019
Subjects:	TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/1/76625_The%20Explosion%20Severity%20of%20Biogas.pdf http://irep.iium.edu.my/76625/7/76625_The%20explosion%20severity%20of%20biogas%28Ch4-co2%29%20or%20air%20mixtures%20in%20a%20closed%20vessel_Scopus.pdf

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spelling	iium-766252020-02-20T14:59:16Z http://irep.iium.edu.my/76625/ The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel Muhammad Harinder Khan, Nur Aqidah Sulaiman, Siti Zubaidah Izhab, Izirwan Abdul Mudalip, Siti Kholijah Che Man, Rohaida Md Shaarani, Shalyda Mohd Arshad, Zatul Iffah Md Kasmani, Rafiziana Sulaiman, Sarina TP155 Chemical engineering Biogas which consists of methane (CH4) and carbon dioxide (CO2) could explode when diluted to a certain degree with air in the presence of ignition source. The maximum explosion overpressure (Pmax), the maximum rate of pressure rise (dP/dt)max, flammability limits, and deflagration index are the most important explosion severities parameters to characterize the risk of explosion. In this research paper, the effect of equivalence ratio (ER) of biogas/air mixtures and the effect of CO2 concentrations presence in biogas were studied in a 20 L spherical vessel. The values of Pmax and (dP/dt)max of biogas/air mixtures were more severe at ER 1.2. At various CO2 content, Pmax and (dP/dt)max of biogas/air mixtures were the least affected at 45% vol/vol of CO2. On the other hand, deflagration index (KG) of biogas/air mixtures trend was the most severe at 35% vol/vol of CO2 content despite the lowest Pmax and (dP/dt)max at 45% vol/vol of CO2 content. The lowest values in Pmax and (dP/dt)max were due to the diffusivity properties of CH4 that had surpassed the CO2 suppression effect. Furthermore, the presence of CO2 in biogas/air mixtures had increased the upper flammability limit and lower flammability limit of biogas. Scientific.Net 2019-07-03 Article PeerReviewed application/pdf en http://irep.iium.edu.my/76625/1/76625_The%20Explosion%20Severity%20of%20Biogas.pdf application/pdf en http://irep.iium.edu.my/76625/7/76625_The%20explosion%20severity%20of%20biogas%28Ch4-co2%29%20or%20air%20mixtures%20in%20a%20closed%20vessel_Scopus.pdf Muhammad Harinder Khan, Nur Aqidah and Sulaiman, Siti Zubaidah and Izhab, Izirwan and Abdul Mudalip, Siti Kholijah and Che Man, Rohaida and Md Shaarani, Shalyda and Mohd Arshad, Zatul Iffah and Md Kasmani, Rafiziana and Sulaiman, Sarina (2019) The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel. Materials Science and Technology, 964. pp. 33-39. ISSN 1662-9752 https://www.scientific.net/MSF.964.33 10.4028/www.scientific.net/MSF.964.33
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TP155 Chemical engineering
spellingShingle	TP155 Chemical engineering Muhammad Harinder Khan, Nur Aqidah Sulaiman, Siti Zubaidah Izhab, Izirwan Abdul Mudalip, Siti Kholijah Che Man, Rohaida Md Shaarani, Shalyda Mohd Arshad, Zatul Iffah Md Kasmani, Rafiziana Sulaiman, Sarina The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
description	Biogas which consists of methane (CH4) and carbon dioxide (CO2) could explode when diluted to a certain degree with air in the presence of ignition source. The maximum explosion overpressure (Pmax), the maximum rate of pressure rise (dP/dt)max, flammability limits, and deflagration index are the most important explosion severities parameters to characterize the risk of explosion. In this research paper, the effect of equivalence ratio (ER) of biogas/air mixtures and the effect of CO2 concentrations presence in biogas were studied in a 20 L spherical vessel. The values of Pmax and (dP/dt)max of biogas/air mixtures were more severe at ER 1.2. At various CO2 content, Pmax and (dP/dt)max of biogas/air mixtures were the least affected at 45% vol/vol of CO2. On the other hand, deflagration index (KG) of biogas/air mixtures trend was the most severe at 35% vol/vol of CO2 content despite the lowest Pmax and (dP/dt)max at 45% vol/vol of CO2 content. The lowest values in Pmax and (dP/dt)max were due to the diffusivity properties of CH4 that had surpassed the CO2 suppression effect. Furthermore, the presence of CO2 in biogas/air mixtures had increased the upper flammability limit and lower flammability limit of biogas.
format	Article
author	Muhammad Harinder Khan, Nur Aqidah Sulaiman, Siti Zubaidah Izhab, Izirwan Abdul Mudalip, Siti Kholijah Che Man, Rohaida Md Shaarani, Shalyda Mohd Arshad, Zatul Iffah Md Kasmani, Rafiziana Sulaiman, Sarina
author_facet	Muhammad Harinder Khan, Nur Aqidah Sulaiman, Siti Zubaidah Izhab, Izirwan Abdul Mudalip, Siti Kholijah Che Man, Rohaida Md Shaarani, Shalyda Mohd Arshad, Zatul Iffah Md Kasmani, Rafiziana Sulaiman, Sarina
author_sort	Muhammad Harinder Khan, Nur Aqidah
title	The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
title_short	The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
title_full	The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
title_fullStr	The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
title_full_unstemmed	The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel
title_sort	explosion severity of biogas(ch4-co2)/air mixtures in a closed vessel
publisher	Scientific.Net
publishDate	2019
url	http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/ http://irep.iium.edu.my/76625/1/76625_The%20Explosion%20Severity%20of%20Biogas.pdf http://irep.iium.edu.my/76625/7/76625_The%20explosion%20severity%20of%20biogas%28Ch4-co2%29%20or%20air%20mixtures%20in%20a%20closed%20vessel_Scopus.pdf
first_indexed	2023-09-18T21:48:13Z
last_indexed	2023-09-18T21:48:13Z
_version_	1777413593682149376

The explosion severity of biogas(CH4-CO2)/air mixtures in a closed vessel

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