Rates of Biogeochemical Processes in Anoxic Sediments
نویسندگان
چکیده
منابع مشابه
Biogeochemical Cycle of Methanol in Anoxic Deep-Sea Sediments
The biological flux and lifetime of methanol in anoxic marine sediments are largely unknown. We herein reported, for the first time, quantitative methanol removal rates in subsurface sediments. Anaerobic incubation experiments with radiotracers showed high rates of microbial methanol consumption. Notably, methanol oxidation to CO2 surpassed methanol assimilation and methanogenesis from CO2/H2 a...
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A laboratory incubation experiment was conducted with uranium-contaminated subsurface sediment to assess the geochemical and microbial community response to ethanol amendment. A classical sequence of terminal electron-accepting processes (TEAPs) was observed in ethanol-amended slurries, with NO3- reduction, Fe(III) reduction, SO4(2-) reduction, and CH4 production proceeding in sequence until al...
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The microbial reduction of sulfate to sulfide coupled to organic matter oxidation followed by the transformation of sulfide back to sulfate drives a dynamic sulfur cycle in a variety of environments. The oxidative part of the sulfur cycle in particular is difficult to constrain because the eight electron oxidation of sulfide to sulfate occurs stepwise via a suite of biological and chemical path...
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ژورنال
عنوان ژورنال: Annual Review of Earth and Planetary Sciences
سال: 1983
ISSN: 0084-6597,1545-4495
DOI: 10.1146/annurev.ea.11.050183.001413