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 mos...

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Main Authors:	Nur Aqidah, Muhammad Harinder Khan, Siti Zubaidah, Sulaiman, Izirwan, Izhab, Siti Kholijah, Abdul Mudalip, Rohaida, Che Man, Shalyda, Md Shaarani, Zatul Iffah, Mohd Arshad, Rafiziana, Md Kasmani, Sarina, Sulaiman
Format:	Conference or Workshop Item
Language:	English
Published:	2018
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/24830/ http://umpir.ump.edu.my/id/eprint/24830/1/The%20Explosion%20Severity%20of%20Biogas%28CH4-CO2%29Air%20Mixtures%20in%20a%20Closed%20Vessel.pdf

id	ump-24830
recordtype	eprints
spelling	ump-248302019-04-22T08:45:38Z http://umpir.ump.edu.my/id/eprint/24830/ The Explosion Severity of Biogas(CH4-CO2)/Air Mixtures in a Closed Vessel Nur Aqidah, Muhammad Harinder Khan Siti Zubaidah, Sulaiman Izirwan, Izhab Siti Kholijah, Abdul Mudalip Rohaida, Che Man Shalyda, Md Shaarani Zatul Iffah, Mohd Arshad Rafiziana, Md Kasmani Sarina, Sulaiman TP Chemical technology 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. 2018 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24830/1/The%20Explosion%20Severity%20of%20Biogas%28CH4-CO2%29Air%20Mixtures%20in%20a%20Closed%20Vessel.pdf Nur Aqidah, Muhammad Harinder Khan and Siti Zubaidah, Sulaiman and Izirwan, Izhab and Siti Kholijah, Abdul Mudalip and Rohaida, Che Man and Shalyda, Md Shaarani and Zatul Iffah, Mohd Arshad and Rafiziana, Md Kasmani and Sarina, Sulaiman (2018) The Explosion Severity of Biogas(CH4-CO2)/Air Mixtures in a Closed Vessel. In: The 4th International Seminar of Science and Technology (ISST) 2018, 9 August 2018 , Surabaya, Indonesia. pp. 1-8.. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Nur Aqidah, Muhammad Harinder Khan Siti Zubaidah, Sulaiman Izirwan, Izhab Siti Kholijah, Abdul Mudalip Rohaida, Che Man Shalyda, Md Shaarani Zatul Iffah, Mohd Arshad Rafiziana, Md Kasmani Sarina, Sulaiman 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	Conference or Workshop Item
author	Nur Aqidah, Muhammad Harinder Khan Siti Zubaidah, Sulaiman Izirwan, Izhab Siti Kholijah, Abdul Mudalip Rohaida, Che Man Shalyda, Md Shaarani Zatul Iffah, Mohd Arshad Rafiziana, Md Kasmani Sarina, Sulaiman
author_facet	Nur Aqidah, Muhammad Harinder Khan Siti Zubaidah, Sulaiman Izirwan, Izhab Siti Kholijah, Abdul Mudalip Rohaida, Che Man Shalyda, Md Shaarani Zatul Iffah, Mohd Arshad Rafiziana, Md Kasmani Sarina, Sulaiman
author_sort	Nur Aqidah, Muhammad Harinder Khan
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
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/24830/ http://umpir.ump.edu.my/id/eprint/24830/1/The%20Explosion%20Severity%20of%20Biogas%28CH4-CO2%29Air%20Mixtures%20in%20a%20Closed%20Vessel.pdf
first_indexed	2023-09-18T22:37:49Z
last_indexed	2023-09-18T22:37:49Z
_version_	1777416713674948608

The Explosion Severity of Biogas(CH4-CO2)/Air Mixtures in a Closed Vessel

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