Results 311 to 320 of about 270,626 (338)

Microbial sulfate reduction in a brackish meromictic steppe lake

Aquatic Ecology, 2003
Patterns of sulfate reduction were studied in water and sediments of Lake Shira, South Siberia, Russia. The lake was characterized by a high level of sulfate (91-116 mM). The concentration of hydrogen sulfide in the anoxic waters of the lake reached 0.6 mM.
Dmitriy B. Kosolapov, Denis Yu. Rogozin, Inna A. Gladchenko, Alexander I. Kopylov, Elena E. Zakharova   +4 more
openaire   +1 more source

Unravelling microbial drivers of the sulfate-reduction process inside landfill using metagenomics

Chemosphere, 2023
Hydrogen sulfide (H2S) is one of the common landfill odor. This research demonstrates that the sulfate transformation behavior is significantly enhanced during the landfill process, accompanied by a shift in microbial structure. The relative abundance of dissimilatory sulfate reduction (DSR) and thiosulfate oxidation by SOX (sulfur-oxidation) complex ...
Lifang, Hu, Yuqian, Wang, Manting, Ci, Yuyang, Long   +3 more
openaire   +2 more sources

Microbially mediated mobilization of arsenic from aquifer sediments under bacterial sulfate reduction

Science of The Total Environment, 2021
Understanding the biogeochemical processes controlling arsenic (As) mobilization under bacterial sulfate reduction (BSR) in aquifer sediments is essential for the remediation of high As groundwater. Here, we conducted microcosm experiments with shallow aquifer sediments from the Jianghan Plain (central Yangtze River Basin) under the stimulation of ...
Jie, Gao, Tianliang, Zheng, Yamin, Deng, Hongchen, Jiang   +3 more
openaire   +2 more sources

High-Temperature Microbial Sulfate Reduction Can Be Accompanied by Magnetite Formation

Microbiology, 2004
The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus was found to be capable of lithoautotrophic growth on medium containing molecular hydrogen, sulfate, and amorphous Fe(III) oxide. During the growth of this microorganism, amorphous Fe(III) oxide was transformed into black strongly magnetic sediment rich in magnetite, as shown by ...
A I, Slobodkin, N I, Chistiakova, V S, Rusakov   +2 more
openaire   +2 more sources

Mechanism of arsenic release in sulfate rich sediment during microbial sulfate reduction

2016
Arsenic contamination of drinking water is a major problem in An Giang, one of the Southwestern Vietnamese provinces. To simulate the natural redox cycles to which natural sediments are subjected, batch redox oscillation bioreactor experiments were conducted on arsenic and sulfate doped natural sediments.
Phan THV, Tisserand D, Bardelli F, Charlet L, Frutschi M, BernierLatmani R   +5 more
openaire   +2 more sources

Autotrophic biocathode for high efficient sulfate reduction in microbial electrolysis cells

Bioresource Technology, 2014
The aim of this study was to utilize the biocathode microbial electrolysis cell (MEC) for sulfate removal from wastewater. Experiments were conducted using the two-chambered MEC under fed-batch and continuous flow modes, respectively, with different cathode potentials. With the fed-batch operation, the average reductive rate of sulfate was 0.49 mg d(-1)
Haiping, Luo, Shiyu, Fu, Guangli, Liu, Renduo, Zhang, Yaoping, Bai, Xiaonan, Luo   +5 more
openaire   +2 more sources

The mechanism of microbial sulfate reduction in high concentration sulfate wastewater enhanced by maifanite

Water Research
Excessive sulfate levels in water bodies pose a dual threat to the ecological environment and human health. The microbial removal of sulfate encounters challenges, particularly in environments with high sulfate concentrations, where the gradual accumulation of sulfide hampers microbial activity.
Chaorui, Zhao, Nan, Chen, Tong, Liu, Wenjun, Liu, Wesmanegda Elisee, Dipama, Chuanping, Feng   +5 more
openaire   +2 more sources

Cellular energy conservation and the rate of microbial sulfate reduction

Geology, 2009
Microbial sulfate reduction is subject to a thermodynamic limit arising from the micro-organisms9 need to save energy for maintenance and growth, and this limit prevents the process from proceeding until the supply of electron donor or sulfate has been consumed, as would be expected from commonly applied kinetic theory.
Qusheng Jin, Craig M. Bethke
openaire   +1 more source

Microbial sulfate reduction measured by an automated electrical impedance technique

Geomicrobiology Journal, 1979
Electrical impedance measurements are used to investigate the rates of sulfate reduction by pure cultures of and sediments containing sulfur-reducing bacteria. Changes in the electrical impedance ratios of pure cultures of Desulfovibrio aestuarii and samples of reduced sediments from San Francisco Bay were measured by a Bactometer 32, and sulfate ...
Ronald S. Oremland, Melvin P. Silverman
openaire   +1 more source

Microbial reduction of sulfate injected to gas condensate plumes in cold groundwater

Journal of Contaminant Hydrology, 2007
Despite a rapid expansion over the past decade in the reliance on intrinsic bioremediation to remediate petroleum hydrocarbon plumes in groundwater, significant research gaps remain. Although it has been demonstrated that bacterial sulfate reduction can be a key electron accepting process in many petroleum plumes, little is known about the rate of this
Dale R, Van Stempvoort, James, Armstrong, Bernhard, Mayer   +2 more
openaire   +2 more sources