A5086360839- Anaerobic Digestion and Biogas Production
- Methane Hydrates and Related Phenomena
- Wastewater Treatment and Nitrogen Removal
- Microbial Community Ecology and Physiology
- Microbial metabolism and enzyme function
- Biofuel production and bioconversion
- Atmospheric and Environmental Gas Dynamics
- Microbial Fuel Cells and Bioremediation
- Landfill Environmental Impact Studies
- Genomics and Phylogenetic Studies
- Microbial Metabolic Engineering and Bioproduction
- Mining and Gasification Technologies
- CO2 Sequestration and Geologic Interactions
- Food Industry and Aquatic Biology
- Composting and Vermicomposting Techniques
- Algal biology and biofuel production
- Hydrocarbon exploration and reservoir analysis
- Microbial bioremediation and biosurfactants
- Coal Combustion and Slurry Processing
- Hemoglobin structure and function
- Water-Energy-Food Nexus Studies
- Enzyme Production and Characterization
- Chemical Reactions and Isotopes
- Phosphorus and nutrient management
- Edible Oils Quality and Analysis
Russian Academy of Sciences
2014-2023
Federal Center Research Fundamentals of Biotechnology
2017-2023
All-Russian Scientific Research Institute of Food Biotechnology
2018
Swiss Federal Institute of Aquatic Science and Technology
1999-2007
Czech Academy of Sciences, Institute of Microbiology
1999
Wageningen University & Research
1993
Methanogens and homoacetogens compete for available H2 in anoxic environments. The competitiveness of these microorganisms was studied by measuring consumption kinetics (Vmax, Km, threshold) different psychroactive strains as function temperature. Methanogenic MSB MSP homoacetogenic Acetobacterium bakii, A. paludosum, fimetarium, tundrae, which were isolated from low-temperature environments, all able to grow consume a temperature range 4–30°C. thresholds steadily decreased with decreasing...
ABSTRACT Methane production and archaeal community composition were studied in samples from an acidic peat bog incubated at different temperatures pH values. H 2 -dependent methanogenesis increased strongly the lowest pH, 3.8, Methanobacteriaceae became important except for Methanomicrobiaceae Methanosarcinaceae . An acidophilic psychrotolerant Methanobacterium sp. was isolated using -plus-CO -supplemented medium 4.5.
ABSTRACT Anoxic sediments from Rotsee (Switzerland) were analyzed for the presence and diversity of methanogens by using molecular tools methanogenic activity radiotracer techniques, in addition to measurement chemical profiles. After PCR-assisted sequence retrieval 16S rRNA genes (16S rDNA) anoxic sediment Rotsee, cloning, sequencing, a phylogenetic analysis identified two clusters sequences four separated clones. The cluster 1 grouped with those Methanosaeta spp., whereas 2 comprised...
ABSTRACT Anaerobic treatment of a volatile fatty acid (VFA) mixture was investigated under psychrophilic (3 to 8°C) conditions in two laboratory-scale expanded granular sludge bed reactor stages series. The system seeded with mesophilic methanogenic and fed VFAs. Good removal acids achieved the two-stage system. Relative high levels propionate were present effluent first stage, but efficiently removed second where low hydrogen partial pressure acetate concentration advantageous for...
Methanogenesis from main methane precursors H(2)/CO(2) and acetate was investigated in a temperature range of 2-70 degrees C using sediments Lake Baldegg, Switzerland. Psychrophilic, psychrotrophic, mesophilic, thermophilic methanogenic microbial communities were enriched by incubations for 1-3 months nonamended sediment slurries at 5, 15, 30, 50 C. Isotope experiments with amended (14)C-labeled bicarbonate (14)C-2-acetate showed that the psychrophilic community (enriched 5 C), about 95%...
The microbial community of a laboratory-scale bioreactor based on the anammox process was investigated by using metagenomic approaches and fluorescent in situ hybridization (FISH). initially inoculated with activated sludge from denitrifying municipal wastewater treatment station. By constantly increasing ammonium nitrite load, containing novel species bacteria 'Candidatus Jettenia ecosi' developed after five years when maximal daily nitrogen removal rate reached 8.5 g/L. Sequencing...
This article presents the results of start-up continuous production biohydrogen from cheese whey (CW) in an anaerobic filter (AF) and fluidized bed (AFB) with a polyurethane carrier. Heat acid pretreatments were used for inactivation hydrogen-scavengers inoculum (mesophilic thermophilic sludge). Acid pretreatment was effective sludge to suppress methanogenic activity, heat treatment mesophilic sludge. Maximum specific yields hydrogen, namely 178 mL/g chemical oxygen demand (COD) 149 COD AFB...
Methanogenic degradation of organic matter occurs in a wide temperature range from psychrophilic to extreme thermophilic conditions. Mesophilic and methanogenesis is relatively well investigated, but little known about low methanogenic communities. The aim the present work was study temperatures with samples sediments deep lakes. These may be considered deposits different types microorganisms, which are constantly exposed temperatures. main question how microbial communities compare...