Mineralization of glucose and lignocellulose by four arctic freshwater sediments in response to nutrient enrichment
Article Abstract:
Microbial biomass and glucose and lignocellulose mineralization rates were compared among four different arctic sediments: littoral lake, profundal lake, thaw pond and river bank peat deposits. Microbial biomass was greatest in the thaw pond and least in the profundal lake sediment. Mineralization of glucose after 20 hours was highest in river peat, although after 170 hours, the rate in the profundal lake had equaled that of the river peat. The rate of lignocellulose mineralization per unit biomass was highest in profundal lake, where nitrogen was found to be limiting. The results indicate that profundal lake microbia are better able to utilize recalcitrant substrates.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1992
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Optimization of simultaneous chemical and biological mineralization of perchloroethylene
Article Abstract:
The simultaneous biological and chemical mineralization of perchloroethylene has been optimized using modified Fenton's reagent and Xanthobacter flavus. It was found that perchloroethylene concentration exerted no significant effect within the tested boundaries of the second-order, quadratic response surface model used in the experiment. In contrast, other variables, iron concentrations, cell number and hydrogen peroxide were significant at alpha = 0.05 for the mineralization of perchloroethylene.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
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Mineralization of the cyclic nitramine explosive hexahydro-1,3,5-trinitro-1,3,5-triazine by Gordonia and Williamsia spp
Article Abstract:
The isolation of two bacteria that degrade hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) aerobically as a sole carbon and nitrogen source, which are also able to mineralize RDX when used as a carbon, nitrogen, or carbon and nitrogen, is reported. These two genera possess different physiologies with respect to RDX mineralization and each serves as a useful microbiological model for the study of RDX biodegradation with regard to physiology, biochemistry and genetics.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
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