Methane emission from the biodegradation of oil palm empty fruit bunches

Chan K. L., . and Wan Hasamudin Wan Hassan, . (2008) Methane emission from the biodegradation of oil palm empty fruit bunches. [Proceedings Paper]

Empty fruit bunches EFB one ofthe major by-products derived from palm oil mills account for 23 of the weight of fresh fruit bunches FFB resulting in uncontrolledemissions ofmethane duetothe anaerobic degradation oforganic material over long period of time. The purpose of the study is to measure the emission ofmethane from the EFB stockpiles. Methane is about 23 times more powerful as global wanning potential GWP than carbon dioxide by weight. Gases measurements were carried out on the EFB stockpiles in one ofthe local mill.Higherconcentration ofmethaneCH4 andcarbonmonoxideCOwere detected in certain locations from the stockpile;s surface. In the position with similar height say 1.0 m but different depth from 0.3 m to 0.75 m; the CH4 concentrations were ranging from 2.0 LEL to 4.0 LEL. In the case of similar depth 0.3 m but different height from 0.5 m to 1.0 m; the CH4 concentrations were ranging from 2.6 LEL to 2.0 LEL. All the measurement points in EFB fibres stockpiles show higher concentration of CH4 and CO compared to EFB stockpiles. An experiment was also conducted to measure the biodegradation of EFB fibres in cellophane-sealed conical flask. A sharp decrease of oxygen level was detected from 19.80 2.20 to 2.10 1.60 within 24 hours. The concentration ofCH4 and CO reached 7.8 LEL and 603.4 ppm respectively after 114 hours.

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Abstract

Empty fruit bunches EFB one ofthe major by-products derived from palm oil mills account for 23 of the weight of fresh fruit bunches FFB resulting in uncontrolledemissions ofmethane duetothe anaerobic degradation oforganic material over long period of time. The purpose of the study is to measure the emission ofmethane from the EFB stockpiles. Methane is about 23 times more powerful as global wanning potential GWP than carbon dioxide by weight. Gases measurements were carried out on the EFB stockpiles in one ofthe local mill.Higherconcentration ofmethaneCH4 andcarbonmonoxideCOwere detected in certain locations from the stockpile;s surface. In the position with similar height say 1.0 m but different depth from 0.3 m to 0.75 m; the CH4 concentrations were ranging from 2.0 LEL to 4.0 LEL. In the case of similar depth 0.3 m but different height from 0.5 m to 1.0 m; the CH4 concentrations were ranging from 2.6 LEL to 2.0 LEL. All the measurement points in EFB fibres stockpiles show higher concentration of CH4 and CO compared to EFB stockpiles. An experiment was also conducted to measure the biodegradation of EFB fibres in cellophane-sealed conical flask. A sharp decrease of oxygen level was detected from 19.80 2.20 to 2.10 1.60 within 24 hours. The concentration ofCH4 and CO reached 7.8 LEL and 603.4 ppm respectively after 114 hours.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB 299 P3 N277 2007 Call Number
AGROVOC Term:	Methane
AGROVOC Term:	Biodegradation
AGROVOC Term:	Oil palm
AGROVOC Term:	Byproducts
AGROVOC Term:	Degradation
AGROVOC Term:	Global warming
AGROVOC Term:	Cellophane
AGROVOC Term:	Biomass
AGROVOC Term:	Fertilizers
AGROVOC Term:	Mulching
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11886

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