title: Addition of a palm oil analogue to oil-reservoir formation water stimulates the growth of Anaerobaculum sp. and a novel taxon from the Deferribacteraceae.
abstract: The manipulation of microbes within oil reservoirs has been the subject of a number of studies. The aims of these studies have included alteration of oil characteristics, improvement in recovery of oil and suppression of microbes that produce H(2)S. Understanding microbial communities and their microbial responses is important in predicting the outcome of these studies. Palm oil waste is an abundant waste product, particularly in Asia, and we sought to examine its usefulness for altering microbial communities in oil reservoirs. Data from the present study demonstrated that after amendment with a palm oil analogue (POA), oil reservoir microflora produced methane and nitrogen gas along with a net consumption of CO(2). The addition stimulated a novel taxon in the family Deferribacteraceae. Amendment with POA also affected the methanogen community by stimulating the growth of Methanothermobacter, Methanoculleus and Methanocalculus spp. Overall the study indicated that POA addition allowed the development of a consortium that was able to convert CO(2) into CH(4) in a process powered by an abundant waste product.
authors.affiliation: CSIRO Food and Nutritional Sciences, P. O. Box 52, North Ryde, NSW 1670 Australia. Dongmei.Li@csiro.au
authors.forename: Dongmei
authors.initials: D
authors.lastname: Li
authors.forename: David
authors.initials: D
authors.lastname: J Midgley
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Wei
authors.forename: Herbert
authors.initials: H
authors.lastname: Volk
authors.forename: Wan
authors.initials: W
authors.lastname: Ata Wan Daud
authors.forename: Philip
authors.initials: P
authors.lastname: Hendry
mesh_terms: D001419:Bacteria / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification*; D058448:Biota; D002245:Carbon Dioxide / Q000378:metabolism; D004783:Environmental Microbiology; D005740:Gases / Q000378:metabolism; D008697:Methane / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism; D061329:Oil and Gas Fields; D000073878:Palm Oil; D010938:Plant Oils / Q000378:metabolism*; D014867:Water
chemical_list: D005740:Gases; D010938:Plant Oils; D014867:Water; D002245:Carbon Dioxide; D000073878:Palm Oil; D009584:Nitrogen; D008697:Methane