Spatially oscillating activity and microbial succession of mercury-reducing biofilms in a technical-scale bioremediation system.

Applied and Environmental Microbiology
H von CansteinI Wagner-Döbler

Abstract

Mercury-contaminated chemical wastewater of a mercury cell chloralkali plant was cleaned on site by a technical-scale bioremediation system. Microbial mercury reduction of soluble Hg(II) to precipitating Hg(0) decreased the mercury load of the wastewater during its flow through the bioremediation system by up to 99%. The system consisted of a packed-bed bioreactor, where most of the wastewater's mercury load was retained, and an activated carbon filter, where residual mercury was removed from the bioreactor effluent by both physical adsorption and biological reduction. In response to the oscillation of the mercury concentration in the bioreactor inflow, the zone of maximum mercury reduction oscillated regularly between the lower and the upper bioreactor horizons or the carbon filter. At low mercury concentrations, maximum mercury reduction occurred near the inflow at the bottom of the bioreactor. At high concentrations, the zone of maximum activity moved to the upper horizons. The composition of the bioreactor and carbon filter biofilms was investigated by 16S-23S ribosomal DNA intergenic spacer polymorphism analysis. Analysis of spatial biofilm variation showed an increasing microbial diversity along a gradient of decreasing m...Continue Reading

References

Feb 1, 1996·Applied and Environmental Microbiology·M T Suzuki, S J Giovannoni
Jan 1, 1996·Annual Review of Microbiology·S Silver, L T Phung
Apr 1, 1997·FEMS Microbiology Reviews·A M OsbornD A Ritchie
Mar 21, 1998·Applied and Environmental Microbiology·M StoffelsK H Schleifer
Jun 3, 1998·Applied and Environmental Microbiology·K Pak, R Bartha
Jun 3, 1999·Journal of Microbiological Methods·J García-MartínezF Rodríguez-Valera
Oct 12, 1999·Journal of Human Hypertension·N Langford, R Ferner
Dec 3, 1999·Applied and Environmental Microbiology·H von CansteinI Wagner-Döbler
Sep 30, 2000·Applied and Environmental Microbiology·I Wagner-DöblerY Li
Feb 24, 2001·Nature·M Schrope
Feb 1, 1987·Applied and Environmental Microbiology·G C Compeau, R Bartha

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Citations

May 4, 2010·Applied Microbiology and Biotechnology·Kuan-Chen ChengJeffrey M Catchmark
Mar 1, 2008·Indian Journal of Microbiology·Arundhati Pal, A K Paul
Jul 10, 2003·Current Opinion in Biotechnology·Aurelio Briones, Lutgarde Raskin
Sep 10, 2005·Applied and Environmental Microbiology·Hugo A Castillo-Gonzalez, Mary Ann Bruns
Jan 19, 2005·Microbial Cell Factories·Alessandra Di LorenzoElisabetta de Alteriis
Jun 28, 2003·FEMS Microbiology Reviews·Tamar BarkayAnne O Summers
Sep 24, 2005·Biotechnology and Bioengineering·E A C EmanuelssonA G Livingston
Jul 25, 2009·Critical Reviews in Microbiology·Pieter MoonsAbram Aertsen
Jul 9, 2021·Environmental Science and Pollution Research International·Leonard Owino Kachieng'a, John Onolame Unuofin
Apr 13, 2004·Environmental Science & Technology·W D DeckwerI Wagner-Döbler

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