Anaerobic batch experiment

Degradation constant k = 3.2-M/h for anaerobic batch experiment in serum bottles k = 2.4 -M/h for dechlorination in anaerobic batch or continuous bioreactor k = 2.4 -M/h in the sequential anaerobic-aerobic continuous reactor system (Armenante et al. 1999)... 

In parallel with the anaerobic field injection experiment, ISMs were installed at five locations downgradient of the landfill (see Nielsen et al. (1996) for description of this technique). Also, laboratory batch experiments (LBs) were... 

Bjerg P. L., Riigge K., Cortsen J., Nielsen P. H., and Christensen T. H. (1999) Degradation of aromatic and chlorinated aliphatic hydrocarbons in the anaerobic part of the Grindsted Landfill leachate plume in situ microcosm and laboratory batch experiments. Ground Water "il, 113-121. 

Batch experiments under aerobic and anaerobic indirect electrochemical conditions were performed and compared with the published results by Jones [13] using the same substrate and FMN as redox catalyst under aerobic conditions. The newly developed... 

Anaerobic digestion of wastewater from jam industries was studied in a continuous reactor with different OLRs and the optimum OLR was 6.5 kgCOD/m3/day when it was operated with 3 days HRT. The biodegradability of wastewater in batch experiments was about 90%. The removal effciency of total COD and soluble COD were found to 82% and 85%, respectively. The specific methane production was 0.28 m3/kg of COD removed/day (Mohan and Sunny, 2008). 

Feitkenhauer, H. U. Meyer. Anaerobic digestion of alcohol sulfate (anionic surfactant) rich waste-water—Batch experiments. Part I Influence of the surfactant concentration. Bioresour. Technol. 2002a, 52, 115-121. 

The impact of electric current on the environmental conditions and the anaerobic microbial activity in completely mixed fed-batch reactors was studied at various electric field strengths (Maillacheruvu and Alshawabkeh, 1999). Experiments were conducted in bio-electrokinetic (BioEK.) reactors, which consist of plexiglass boxes with titanium-coated mesh electrodes mounted at both ends. Electric fields of 1.5 V/cm through 6 V/cm were applied. Unacclimated anaerobic cultures obtained from a mesophilic anaerobic digester were used in these experiments. 

In the absence of any one standardized method, many investigators have used laboratory batch incubation of wetland soils and aquatic sediments and measured ammonium production as a measure of nitrogen mineralization rates (Wang et al., 2001 White and Reddy, 2001) (Figure 8.20). These methods range from simple batch incubation experiments in which ammonium accumulation is measured over time to stable isotope dilution technique in which soil cores or anaerobic soil slurries are injected with N-labeled ammonium nitrogen. This method allows to estimate both gross and net mineralization rates (Blackburn, 1979). 

Kim, D.-H., Kim, S.-H., Kim, K.Y., Shin, H.-S., 2010. Experience of a pilot-scale hydrogen-producing anaerobic sequencing batch reactor (ASBR) treating food waste. International Journal of Hydrogen Energy 35 (4), 1590—1594. 

While most terrestrial animals are investigated in batch systems, sometimes supplied with a flow of air, oxygen or gas combinations, the type of applied calorimeter is more important for aquatic animals. In a closed batch system, the oxygen concentration in the water will continuously drop during the experiment. As the oxygen solubility in water is rather small with only 2 to 5 % of the concentration in air, this reduction may occur rapidly. Moreover, excretion of products from the anaerobic metabolism changes the ambient conditions considerably, often in an uncontrolled manner. 

Figure 38. A Lovrien three-channel batch heat conduction microcalorimeter for solution-solution or solution-suspension mixing. Each vessel (5 cm total) has two compartments. The smaller chamber (shown being loaded with the syringe) holds 0.5-1.0-cm while the larger chambers can receive 1.0-2.0 cm. After thermal equilibration, 6 to 15 min, the assembly is inverted to mix all the vessels contents and thus start the reactions. Two Seebeck thermopiles make contact with the sides of each vessel. The reference vessel s thermopiles are connected in opposition to the thermopiles of all the three sample vessels. Thus, the heat of the reference or control experiment is electrically subtracted from the heat of each of the three sample vessels. Port closures may be fitted for the gas purging necessary for either aerobic or anaerobic conditions. The mixing vessel materials are glass, 18 K gold or stainless steel (Reproduced from Reference [131] with permission).

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