Digestion of waste bananas to generate energy in Australia.

Digestion of waste bananas to generate energy in Australia. Research Abstract Details 

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Digestion of waste bananas to generate energy in Australia. Abstract Text:

W P Clarke,P Radnidge,T E Lai,P D Jensen,M T Hardin,

This paper presents results from laboratory studies to measure the methane yield and rate of digestion of reject bananas. These parameters were determined in experiments that took into account the likely configuration of a full-scale plant in the banana growing region of north Queensland. The digestion was conducted in a 200-l reactor using fed-batch operation, relying entirely on the natural microbial consortia on the reject bananas to avoid reliance on external inocula such as sludge, an undesirable material around food packaging facilities. An enrichment culture was first established in a highly buffered 200-l batch digestion unit. The fed-batch digester was then started by exchanging leachate with the mature batch reactor. Under loading conditions of 0.6kgVSm(-3)d(-1) over 70days where the average working volume was 160l, the digester produced 398+/-20lCH(4)kgVS(-1). Increasing the loading rate to 1.6kgVSm(-3)d(-1) resulted in a reduced methane yield of 210lCH(4)kgVS(-1) over 23days of operation, with a concomitant accumulation of banana waste in the digester. The leachate at the end of digestion contained over 4000mgl(-1)K, 200mgl(-1) N and 75mgl(-1), levels that exceed acceptable limits for general agricultural irrigation.

Digestion of waste bananas to generate energy in Australia. Publishing Authors By Initials

WP Clarke,P Radnidge,TE Lai,PD Jensen,MT Hardin,

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Digestion of waste bananas to generate energy in Australia. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Waste management (New York, N.Y.)

VOLUME: 28

Page Numbers: 527-33

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ISSN: 0956-053X

DAY: 21

MONTH: 03

YEAR: 2007

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LANGUAGE: eng

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Grant and Affiliation Information for Digestion of waste bananas to generate energy in Australia.

AFFILIATION: School of Engineering, The University of Queensland, Brisbane 4072, Australia.

Country: United States

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MEDLINETA: Waste Manag

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