PMID: 9647831Jul 2, 1998Paper

Aerobic mineralization of 2,6-dichlorophenol by Ralstonia sp. strain RK1

Applied and Environmental Microbiology
P SteinleK W Hanselmann

Abstract

A new aerobic bacterium was isolated from the sediment of a freshwater pond close to a contaminated site at Amponville (France). It was enriched in a fixed-bed reactor fed with 2,6-dichlorophenol (2,6-DCP)as the sole carbon and energy source at pH 7.5 and room temperature. The degradation of 2,6-DCP followed Monod kinetics at low initial concentrations. At concentrations above 300 microM (50 mg.liter-1), 2,6-DCP increasingly inhibited its own degradation. The base sequence of the 16S ribosomal DNA allowed us to assign the bacterium to the genus Ralstonia (formerly Alcaligenes). The substrate spectrum of the bacterium includes toluene, benzene, chlorobenzene, phenol, and all four ortho- and para-substituted mono- and dichlorophenol isomers. Substituents other than chlorine prevented degradation. The capacity to degrade 2,6-DCP was examined in two fixed-bed reactors. The microbial population grew on and completely mineralized 2,6-DCP at 2,6-DCP concentrations up to 740 microM in continuous reactor culture supplied with H2O2 as an oxygen source. Lack of peroxide completely stopped further degradation of 2,6-DCP. Lowering the acid-neutralizing capacity of the medium to 1/10th the original capacity led to a decrease in the pH of the...Continue Reading

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Citations

Apr 5, 2000·Canadian Journal of Microbiology·J SchneiderD Warshawsky
Aug 2, 2003·International Journal of Systematic and Evolutionary Microbiology·Tom CoenyeJohn J LiPuma
Mar 12, 2009·Journal of Industrial Microbiology & Biotechnology·M A AyudeS E Murialdo
Dec 22, 2009·International Journal of Systematic and Evolutionary Microbiology·Virginia CuadradoEdward R B Moore
Oct 1, 2011·Bioprocess and Biosystems Engineering·Danvir Mark C FarnazoWook-Jin Chung
Jun 17, 2006·The Journal of General and Applied Microbiology·Ram ChandraShail Singh
Oct 31, 2006·Environmental Monitoring and Assessment·Yang LuPeng-Xiang Xu
Jul 5, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Ahmet Çabukİsa Sidir
Dec 18, 2013·Environmental Science and Pollution Research International·Jennifer NeumannStefan Stolte
Sep 18, 2003·International Journal of Systematic and Evolutionary Microbiology·Tom CoenyeJohn J LiPuma
Dec 29, 2011·The Journal of Microbiology·Paulina Estrada-de Los SantosJesús Caballero-Mellado
Mar 31, 2012·Journal of Bacteriology·Mátyás CserhátiJózsef Kukolya
Jul 13, 2016·Journal of Industrial Microbiology & Biotechnology·Chidozie Victor AguThaddeus Chukwuemeka Ezeji
Aug 26, 2006·Water Environment Research : a Research Publication of the Water Environment Federation·Serkan Eker, Fikret Kargi
Mar 7, 2003·Canadian Journal of Microbiology·David M StamperOlli H Tuovinen
Feb 19, 2015·Antonie van Leeuwenhoek·Priyanka SinghDeok-Chun Yang
Jun 7, 2020·Current Microbiology·Mohammed Al-NussairawiMátyás Cserháti
Apr 28, 2006·Applied Microbiology and Biotechnology·Vijai K ElangoBabu Z Fathepure
Jul 16, 2008·Environmental Monitoring and Assessment·Ram ChandraDevendra Kumar Patel
May 20, 2017·Antonie van Leeuwenhoek·Daniel Borda-MolinaSandra Baena
May 15, 2021·Microbiology Resource Announcements·Francisco Salvà-SerraDanilo Pérez-Pantoja

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