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Статті в журналах з теми "Biological oxygen consumption"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Leung, S. M., J. C. Little, T. Holst, and N. G. Love. "OXYGEN TRANSFER AND CONSUMPTION IN A BIOLOGICAL AERATED FILTER." Proceedings of the Water Environment Federation 2003, no. 6 (January 1, 2003): 51–69. http://dx.doi.org/10.2175/193864703784641856.

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2

Klekowski, Romuald Z., and Krzysztof W. Opalinski. "Oxygen consumption in Tardigrada from Spitsbergen." Polar Biology 9, no. 5 (April 1989): 299–303. http://dx.doi.org/10.1007/bf00287427.

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3

KANBE, Chiyuki, and Kinji UCHIDA. "Oxygen consumption by Pediococcus halophilus." Agricultural and Biological Chemistry 49, no. 10 (1985): 2931–37. http://dx.doi.org/10.1271/bbb1961.49.2931.

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4

Chaui-Berlinck, José Guilherme, José Eduardo P. W. Bicudo, Luiz Henrique A. Monteiro, and Carlos Arturo Navas. "Oscillatory pattern in oxygen consumption of Hummingbirds." Journal of Thermal Biology 27, no. 5 (October 2002): 371–79. http://dx.doi.org/10.1016/s0306-4565(02)00005-0.

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5

Saad, Noor Aida, Hamidi Abdul Aziz, Mohd Zulkifly Abdullah, Mohamed Zubair, and M. A. Z. Mohd Remy Rozainy. "Oxygen Uptake by Biological Processes inside Oxidation Ditch." Applied Mechanics and Materials 802 (October 2015): 490–95. http://dx.doi.org/10.4028/www.scientific.net/amm.802.490.

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Abstract. In order to provide a better understanding of the Orbal Biological System (OBS), as one type of a modified oxidation ditch, the research aims to develop a preliminary process model to visualize the oxygen uptake by biological processes inside the oxidation ditch. Fundamentally, the model can be used as initial study to get a clearer picture of the oxygen utilization rate inside the ditch. Based on the results, the outer channel takes the highest portion of the overall oxygen consumption which is 66 % compare to the middle channel with only 14 % and followed by the inner channel with 20 %. However, simplifying assumptions made for the preliminary process model development (e.g. constant values of HRT throughout each channel) may affect the accuracy of describing the real conditions of the system.

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6

Bengtsson, Lars, and Osama Ali-Maher. "The dependence of the consumption of dissolved oxygen on lake morphology in ice covered lakes." Hydrology Research 51, no. 3 (February 13, 2020): 381–91. http://dx.doi.org/10.2166/nh.2020.150.

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Abstract The consumption of oxygen in ice-covered lakes is analyzed and related to biological oxygen demand and sediment oxygen demand. An approach for computing dissolved oxygen concentration is suggested assuming horizontally mixed waters and negligable vertical dispersion. It is found that the depletion of dissolved oxygen is mainly due to the transfer of oxygen at the water/sediment interface. The morphology of a lake is very important for how fast the dissolved oxygen concentration is reduced during winter.

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7

Gollmer, Anita, Johannes Regensburger, Tim Maisch, and Wolfgang Bäumler. "Luminescence spectroscopy of singlet oxygen enables monitoring of oxygen consumption in biological systems consisting of fatty acids." Physical Chemistry Chemical Physics 15, no. 27 (2013): 11386. http://dx.doi.org/10.1039/c3cp50841b.

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8

Hendrix, Rik H. J., Yuri M. Ganushchak, and Patrick W. Weerwind. "Oxygen delivery, oxygen consumption and decreased kidney function after cardiopulmonary bypass." PLOS ONE 14, no. 11 (November 22, 2019): e0225541. http://dx.doi.org/10.1371/journal.pone.0225541.

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9

Sierra, J., and P. Renault. "Oxygen consumption by soil microorganisms as affected by oxygen and carbon dioxide levels." Applied Soil Ecology 2, no. 3 (September 1995): 175–84. http://dx.doi.org/10.1016/0929-1393(95)00051-l.

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10

van der Aa, L. T. J., L. C. Rietveld, and J. C. van Dijk. "Effects of ozonation and temperature on the biodegradation of natural organic matter in biological granular activated carbon filters." Drinking Water Engineering and Science 4, no. 1 (January 28, 2011): 25–35. http://dx.doi.org/10.5194/dwes-4-25-2011.

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Abstract. Four pilot (biological) granular activated carbon ((B)GAC) filters were operated to quantify the effects of ozonation and water temperature on the biodegradation of natural organic matter (NOM) in (B)GAC filters. The removal of dissolved organic carbon (DOC), assimilable organic carbon (AOC) and oxygen and the production of carbon dioxide were taken as indicators for NOM biodegradation. Ozonation stimulated DOC and AOC removal in the BGAC filters, but had no significant effect on oxygen consumption or carbon dioxide production. The temperature had no significant effect on DOC and AOC removal, while it had a positive effect on oxygen consumption and carbon dioxide production. Multivariate linear regression was used to quantify these relationships. In summer, the ratio between oxygen consumption and DOC removal was approximately 2 times the theoretical maximum of 2.6 g O2 g C−1 and the ratio between carbon dioxide production and DOC removal was approximately 1.5 times the theoretical maximum of 3.7 g CO2 g C−1. The production and loss of biomass, the degassing of (B)GAC filters, the decrease in the NOM reduction degree and the temperature effects on NOM adsorption could only partly explain these excesses and the non-correlation between DOC and AOC removal and oxygen consumption and carbon dioxide production. It was demonstrated that bioregeneration of NOM could explain the excesses and the non-correlation. Therefore, it was likely that bioregeneration of NOM did occur in the (B)GAC pilot filters.

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11

Sutherland, Kevin M., Scott D. Wankel, and Colleen M. Hansel. "Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen." Proceedings of the National Academy of Sciences 117, no. 7 (February 3, 2020): 3433–39. http://dx.doi.org/10.1073/pnas.1912313117.

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The balance between sources and sinks of molecular oxygen in the oceans has greatly impacted the composition of Earth’s atmosphere since the evolution of oxygenic photosynthesis, thereby exerting key influence on Earth’s climate and the redox state of (sub)surface Earth. The canonical source and sink terms of the marine oxygen budget include photosynthesis, respiration, photorespiration, the Mehler reaction, and other smaller terms. However, recent advances in understanding cryptic oxygen cycling, namely the ubiquitous one-electron reduction of O2 to superoxide by microorganisms outside the cell, remains unexplored as a potential player in global oxygen dynamics. Here we show that dark extracellular superoxide production by marine microbes represents a previously unconsidered global oxygen flux and sink comparable in magnitude to other key terms. We estimate that extracellular superoxide production represents a gross oxygen sink comprising about a third of marine gross oxygen production, and a net oxygen sink amounting to 15 to 50% of that. We further demonstrate that this total marine dark extracellular superoxide flux is consistent with concentrations of superoxide in marine environments. These findings underscore prolific marine sources of reactive oxygen species and a complex and dynamic oxygen cycle in which oxygen consumption and corresponding carbon oxidation are not necessarily confined to cell membranes or exclusively related to respiration. This revised model of the marine oxygen cycle will ultimately allow for greater reconciliation among estimates of primary production and respiration and a greater mechanistic understanding of redox cycling in the ocean.

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12

Kindschi, Greg A., Charlie E. Smith, and Robert F. Koby. "Oxygen Consumption of Two Strains of Rainbow Trout Reared at Four Densities with Supplemental Oxygen." Progressive Fish-Culturist 53, no. 4 (October 1991): 210–15. http://dx.doi.org/10.1577/1548-8640(1991)053<0210:ocotso>2.3.co;2.

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13

Kislukhin, Victor V. "Regulation of oxygen consumption by vasomotion." Mathematical Biosciences 191, no. 1 (September 2004): 101–8. http://dx.doi.org/10.1016/j.mbs.2004.05.002.

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14

Karlsson, Ingemar. "Environmental and energy efficiency of different sewage treatment processes." Water Science and Technology 34, no. 3-4 (August 1, 1996): 203–11. http://dx.doi.org/10.2166/wst.1996.0434.

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This paper summarises the Scandinavian experience that chemical wastewater treatment gives “value for money” in the sense that such treatment gives a low construction volume per removed unit of Oxygen Consumption Potential (OCP) in the receiving water and a low energy consumption per unit of Oxygen Consumption Potential (OCP) removed. The OCP evaluation takes into consideration both the primary oxygen consumption caused by organic matter and ammonium as well as the secondary oxygen consumption from degradation of algae resulting from the discharge of nutrient. The paper demonstrates that in comparison to conventional biological activated sludge treatment (with pre-settling), chemical treatment plants (primary precipitation) are cheaper in terms of cost per unit of OCP removed and that they require less energy per unit of OCP removed. Chemical treatment is considered to be the most suitable method when discharging municipal sewage to sensitive marine receiving waters and should be categorized as secondary treatment, like biological treatment. It is important when ecological aspects are considered, for instance in terms of energy consumption, that all elements that contribute to the total consumption of energy must be included. For instance, a compact treatment plant, like a chemical one, may require less energy for concrete, while it requires more energy for chemicals. The problem is evaluated in two different ways: (i) an evaluation of energy consumption based on the major energy-associated elements: chemicals, air and biogas; and (ii) an analysis of all ecological aspects based on a model for evaluating the ecological value of the products and processes.

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15

Duteil, O., W. Koeve, A. Oschlies, D. Bianchi, I. Kriest, E. Galbraith, and R. Matear. "A new estimate of ocean oxygen utilization points to a reduced rate of respiration in the ocean interior." Biogeosciences Discussions 10, no. 2 (February 8, 2013): 2245–67. http://dx.doi.org/10.5194/bgd-10-2245-2013.

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Abstract. The Apparent Oxygen Utilization (AOU) is a classical measure of the amount of oxygen respired by biological processes in the ocean interior. We show that the AOU systematically overestimates the True Oxygen Utilization (TOU) in 6 coupled circulation-biogeochemical ocean models, due to atmosphere–ocean oxygen disequilibrium in the subduction regions, consistent with prior work. We develop a new approach that we call Evaluated Oxygen Utilization (EOU), which approximates the TOU at least twice as well as AOU in all 6 models, despite large differences in the physical and biological components of the models. Applying the EOU approach to a global observational dataset leads to an estimated biological oxygen consumption rate that is by 25 percent lower than that derived from AOU-based estimates.

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16

Barker, P. S., and P. L. Dold. "Sludge production and oxygen demand in nutrient removal activated sludge systems." Water Science and Technology 34, no. 5-6 (September 1, 1996): 43–50. http://dx.doi.org/10.2166/wst.1996.0533.

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Results of model simulations indicate that without the assumption of COD loss, predictions of oxygen consumption and volatile suspended solids production are significantly over-estimated for biological excess phosphorus removal (BEPR) activated sludge systems (and to a lesser extent anoxic-aerobic systems). These systems apparently consume less oxygen and produce less volatile solids than aerobic systems for the same amount of COD removal. A general model for biological nutrient removal systems has recently been presented by Barker and Dold. Three mechanisms for COD loss are suggested, based on results of COD balances for different types of activated sludge system. Model simulation results with and without the assumption of COD loss are discussed, as well as the influence of influent COD composition on predictions of volatile suspended solids concentration/production and oxygen consumption.

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17

COWLES, DAVID L., and JAMES J. CHILDRESS. "Swimming Speed and Oxygen Consumption in the Bathypelagic MysidGnathophausia ingens." Biological Bulletin 175, no. 1 (August 1988): 111–21. http://dx.doi.org/10.2307/1541898.

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18

Jorge, RADLVC, D. Lemos, and GS Moreira. "Effect of zinc and benzene on respiration and excretion of mussel larvae (Perna perna) (Linnaeus, 1758) (Mollusca; Bivalvia)." Brazilian Journal of Biology 67, no. 1 (February 2007): 111–15. http://dx.doi.org/10.1590/s1519-69842007000100015.

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The presence of pollutants in the ocean may affect different physiological parameters of animals. Oxygen consumption and ammonia excretion were evaluated in D-shaped larvae of mussels (Perna perna) exposed to zinc sulphate (ZnSO4) and benzene (C6H6). When compared to the control group, both pollutants presented a significant reduction in oxygen consumption. A reduction in the ammonia excretion was also observed, both for ZnSO4 and C6H6 and also in the oxygen consumption. The results indicate that anaerobic metabolism may occur at the beginning of P. perna mussels development, as observed in veliger larvae. The O:N ratio under experimental conditions showed low values indicating that catabolism in veliger larvae was predominantly proteic.

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19

Issa, Hayder Mohammed. "Power Consumption, Mixing Time, and Oxygen Mass Transfer in a Gas-Liquid Contactor Stirred with a Dual Impeller for Different Spacing." Journal of Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/3954305.

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Multiple or dual impellers are widely implemented in stirred contactors used in various biological processes like fermentation, water treatment, and pharmaceutical production. The spacing between impellers is considered as a crucial factor in designing of these types of contactors resulting in variation of oxygen mass transfer, mixing time, or power consumption for such biological system. A study of three parts was conducted to characterize the effect of the spacing between impellers on the most important parameters that related to biological contactor performance: oxygen mass transfer coefficientklafrom the gas phase (air) to the liquid phase (water), mixing time, and power consumption for different operating rotational speeds (1.67–3.33 rps) and for three different spacing positions. The used impellers system in the study is a dual impeller system which consists of an inverted and bladed rotated cone (IBRC) and a pitched-blade up-flow propeller (PBPU). The experimental results showed that the shorter spacing (the lower PBPU in a higher position) is more convenient, as the achieved oxygen mass transfer coefficient has showed an improvement in its values with lower mixing time and with a slight alteration in power consumption.

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20

Große, Fabian, Naomi Greenwood, Markus Kreus, Hermann-Josef Lenhart, Detlev Machoczek, Johannes Pätsch, Lesley Salt, and Helmuth Thomas. "Looking beyond stratification: a model-based analysis of the biological drivers of oxygen deficiency in the North Sea." Biogeosciences 13, no. 8 (April 28, 2016): 2511–35. http://dx.doi.org/10.5194/bg-13-2511-2016.

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Abstract. Low oxygen conditions, often referred to as oxygen deficiency, occur regularly in the North Sea, a temperate European shelf sea. Stratification represents a major process regulating the seasonal dynamics of bottom oxygen, yet, lowest oxygen conditions in the North Sea do not occur in the regions of strongest stratification. This suggests that stratification is an important prerequisite for oxygen deficiency, but that the complex interaction between hydrodynamics and the biological processes drives its evolution. In this study we use the ecosystem model HAMSOM-ECOHAM to provide a general characterisation of the different zones of the North Sea with respect to oxygen, and to quantify the impact of the different physical and biological factors driving the oxygen dynamics inside the entire sub-thermocline volume and directly above the bottom. With respect to oxygen dynamics, the North Sea can be subdivided into three different zones: (1) a highly productive, non-stratified coastal zone, (2) a productive, seasonally stratified zone with a small sub-thermocline volume, and (3) a productive, seasonally stratified zone with a large sub-thermocline volume. Type 2 reveals the highest susceptibility to oxygen deficiency due to sufficiently long stratification periods (> 60 days) accompanied by high surface productivity resulting in high biological consumption, and a small sub-thermocline volume implying both a small initial oxygen inventory and a strong influence of the biological consumption on the oxygen concentration. Year-to-year variations in the oxygen conditions are caused by variations in primary production, while spatial differences can be attributed to differences in stratification and water depth. The large sub-thermocline volume dominates the oxygen dynamics in the northern central and northern North Sea and makes this region insusceptible to oxygen deficiency. In the southern North Sea the strong tidal mixing inhibits the development of seasonal stratification which protects this area from the evolution of low oxygen conditions. In contrast, the southern central North Sea is highly susceptible to low oxygen conditions (type 2). We furthermore show that benthic diagenetic processes represent the main oxygen consumers in the bottom layer, consistently accounting for more than 50 % of the overall consumption. Thus, primary production followed by remineralisation of organic matter under stratified conditions constitutes the main driver for the evolution of oxygen deficiency in the southern central North Sea. By providing these valuable insights, we show that ecosystem models can be a useful tool for the interpretation of observations and the estimation of the impact of anthropogenic drivers on the North Sea oxygen conditions.

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21

Kindschi, Greg A., and Robert F. Koby. "Performance and Oxygen Consumption of Snake River Cutthroat Trout Reared at Four Densities with Supplemental Oxygen." Progressive Fish-Culturist 56, no. 1 (January 1994): 13–18. http://dx.doi.org/10.1577/1548-8640(1994)056<0013:paocos>2.3.co;2.

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22

Miller, Scott A., Eric J. Wagner, and Thomas Bosakowski. "Performance and Oxygen Consumption of Rainbow Trout Reared at Two Densities in Raceways with Oxygen Supplementation." Progressive Fish-Culturist 57, no. 3 (July 1995): 206–12. http://dx.doi.org/10.1577/1548-8640(1995)057<0206:paocor>2.3.co;2.

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23

Oláh, J., V. R. P. Sinha, S. Ayyappan, C. S. Purushothaman, and S. Radheyshyam. "Sediment Oxygen Consumption in Tropical Undrainable Fish Ponds." Internationale Revue der gesamten Hydrobiologie und Hydrographie 72, no. 3 (1987): 297–305. http://dx.doi.org/10.1002/iroh.19870720305.

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24

Rubalcaba, A., M. E. Suárez-Ojeda, F. Stüber, A. Fortuny, C. Bengoa, I. Metcalfe, J. Font, J. Carrera, and A. Fabregat. "Phenol wastewater remediation: advanced oxidation processes coupled to a biological treatment." Water Science and Technology 55, no. 12 (June 1, 2007): 221–27. http://dx.doi.org/10.2166/wst.2007.412.

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Nowadays, there are increasingly stringent regulations requiring more and more treatment of industrial effluents to generate product waters which could be easily reused or disposed of to the environment without any harmful effects. Therefore, different advanced oxidation processes were investigated as suitable precursors for the biological treatment of industrial effluents containing phenol. Wet air oxidation and Fenton process were tested batch wise, while catalytic wet air oxidation and H2O2-promoted catalytic wet air oxidation processes were studied in a trickle bed reactor, the last two using over activated carbon as catalyst. Effluent characterisation was made by means of substrate conversion (using high liquid performance chromatography), chemical oxygen demand and total organic carbon. Biodegradation parameters (i.e. maximum oxygen uptake rate and oxygen consumption) were obtained from respirometric tests using activated sludge from an urban biological wastewater treatment plant (WWTP). The main goal was to find the proper conditions in terms of biodegradability enhancement, so that these phenolic effluents could be successfully treated in an urban biological WWTP. Results show promising research ways for the development of efficient coupled processes for the treatment of wastewater containing toxic or biologically non-degradable compounds.

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25

Pinchasov, Boris B., Oleg V. Grischin, and Arcady A. Putilov. "Rate of Oxygen Consumption in Seasonal and Non-Seasonal Depression." World Journal of Biological Psychiatry 3, no. 2 (January 2002): 101–4. http://dx.doi.org/10.3109/15622970209150608.

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26

Bianchini Jr., I., MB Cunha-Santino, and RS Panhota. "Oxygen uptake from aquatic macrophyte decomposition from Piraju Reservoir (Piraju, SP, Brazil)." Brazilian Journal of Biology 71, no. 1 (February 2011): 27–35. http://dx.doi.org/10.1590/s1519-69842011000100006.

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The kinetics of oxygen consumption related to mineralisation of 18 taxa of aquatic macrophytes (Cyperus sp, Azolla caroliniana, Echinodorus macrophyllus, Eichhornia azurea, Eichhornia crassipes, Eleocharis sp1, Eleocharis sp2, Hetereanthera multiflora, Hydrocotyle raniculoides, Ludwigia sp, Myriophyllum aquaticum, Nymphaea elegans, Oxycaryum cubense, Ricciocarpus natans, Rynchospora corymbosa, Salvinia auriculata, Typha domingensis and Utricularia foliosa) from the reservoir of Piraju Hydroelectric Power Plant (São Paulo state, Brazil) were described. For each species, two incubations were prepared with ca. 300.0 mg of plant (DW) and 1.0 L of reservoir water sample. The incubations were maintained in the dark and at 20 ºC. Periodically the dissolved oxygen (DO) concentrations were measured; the accumulated DO values were fitted to 1st order kinetic model and the results showed that: i) high oxygen consumption was observed for Ludwigia sp (533 mg g-1 DW), while the lowest was registered for Eleocharis sp1 (205 mg g-1 DW) mineralisation; ii) the higher deoxygenation rate constants were verified in the mineralisation of A. caroliniana (0.052 day-1), H. raniculoides (0.050 day-1) and U. foliosa (0.049 day-1). The oxygen consumption rate constants of Ludwigia sp and Eleocharis sp2 mineralisation (0.027 day-1) were the lowest. The half-time of oxygen consumption varied from 9 to 26 days. In the short term, the detritus of E. macrophyllus, H. raniculoides, Ludwigia sp, N. elegans and U. foliosa were the critical resources to the reservoir oxygen demand; while in the long term, A. caroliniana, H. multiflora and T. domingensis were the resources that can potentially contribute to the benthic oxygen demand of this reservoir.

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27

Meding, Marianne E., and Leland J. Jackson. "Biological implications of empirical models of winter oxygen depletion." Canadian Journal of Fisheries and Aquatic Sciences 58, no. 9 (September 1, 2001): 1727–36. http://dx.doi.org/10.1139/f01-109.

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We compiled data for 23 North American temperate zone lakes to assess three alternative winter O2 depletion models for estimating O2 dynamics from freezing to thawing. Dissolved O2 concentrations were constant or declined slightly for an average of 40 days after freezing and then declined rapidly. Once O2 concentrations reached 13 mg·L1, consumption slowed. No model that we fit captured O2 dynamics shortly after freezing. The best fit was a one-pool exponential decay model after one to four initial data were removed. Photosynthesis and freeze-out estimates suggest that O2 inputs are more important in shallow than in deep lakes. Oxygen decay rates (k) correlated with morphometry in shallow lakes and chlorophyll a, Secchi depth, and the sediment surface area to volume ratio in deep lakes. We hypothesize that the failure of chlorophyll a to correlate with k in shallow lakes is because macrophytes are the primary source of decaying organic matter but have not been included in assessments of winter O2 depletion. Thus, some processes in deep lakes cannot simply be scaled to smaller scales in shallow lakes.

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28

Leiva, Félix P., Edwin J. Niklitschek, Kurt Paschke, Paulina Gebauer, and Mauricio A. Urbina. "Tide-related biological rhythm in the oxygen consumption rate of ghost shrimp (Neotrypaea uncinata)." Journal of Experimental Biology 219, no. 13 (April 20, 2016): 1957–60. http://dx.doi.org/10.1242/jeb.133785.

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29

Dyagelev, M. Yu, I. I. Pavlov, A. M. Nepogodin, E. V. Grakhova, and A. A. Lapina. "The review of aeration systems for biological wastewater treatment." IOP Conference Series: Earth and Environmental Science 839, no. 4 (September 1, 2021): 042035. http://dx.doi.org/10.1088/1755-1315/839/4/042035.

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Abstract This article presents different aeration systems for biological wastewater treatment, their classification, also advantages and disadvantages of the most common aeration methods - pneumatic and mechanical are described. Also, proposals to reduce the energy consumption of aeration systems by maintaining the optimal range of dissolved oxygen concentration at different points of the aeration tank, depending on its type, have been prepared.

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30

Fornairon-Bonnefond, Caroline, Jean-Paul Mazauric, Jean-Michel Salmon, and Michel Moutounet. "Observations on the oxygen consumption during maturation of wines on lees." OENO One 33, no. 2 (June 30, 1999): 79. http://dx.doi.org/10.20870/oeno-one.1999.33.2.1030.

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<p style="text-align: justify;">Traditional enological practices (« Bâtonnage » or « microoxygénation » techniques) during wine aging on yeast lees include limited repetitive additions of small amounts of oxygen to the wines. Such empirical practices are generally associated with a limited homogenisation of wine and lees. In this study, the potential relationship between oxygen consumption and the presence of wine lees during wine aging was investigated. Strong oxygen uptake rates by yeast lees were observed during wine aging at 14°C on total yeast lees obtained after fermentation of either synthetic medium or red and white grape musts. These specific oxygen utilization rates by yeast lees is always comprised between 3 and 11 μg O<sup>2</sup> h<sub>-1</sub> 10<sub>-9</sub> cells from the second to the sixth month of aging. The initial levels of specific oxygen utilization rates and the time-decay of these rates along wine aging were very dependent on yeast strains. However such oxygen utilization rates by yeast lees could be responsible for the total dissolved oxygen depletion from wines in less than 20 hours at 14°C during aging on total lees. Such results were of particular importance to evaluate the exact timing of oxygen additions during wine aging on lees. Further experiments had to be done to determine the biological or chemical nature of such oxygen consumption by lees. Such oxygen consumption by yeast lees may lead to final reaction products which may exert strong organoleptic effects on the final quality of wines.</p>

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31

Okubo, Nami, Hiromi Hannah Yamamoto, Fumio Nakaya, and Ken Okaji. "Reproduction in CulturedversusWild Coral Colonies: Fertilization, Larval Oxygen Consumption, and Survival." Biological Bulletin 218, no. 3 (June 2010): 230–36. http://dx.doi.org/10.1086/bblv218n3p230.

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32

Souster, Terri A., Simon A. Morley, and Lloyd S. Peck. "Seasonality of oxygen consumption in five common Antarctic benthic marine invertebrates." Polar Biology 41, no. 5 (January 15, 2018): 897–908. http://dx.doi.org/10.1007/s00300-018-2251-3.

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33

Durán, U., O. Monroy, J. Gómez, and F. Ramírez. "Biological wastewater treatment for removal of polymeric resins in UASB reactor: influence of oxygen." Water Science and Technology 57, no. 7 (April 1, 2008): 1047–52. http://dx.doi.org/10.2166/wst.2008.058.

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The biological elimination of polymeric resins compounds (PRC) such as acrylic acid and their esters, vinyl acetate and styrene under methanogenic and oxygen-limited methanogenesis conditions was evaluated. Two UASB reactors (A and B) were used and the removal of the organic matter was studied in four stages. Reactor A was used as methanogenic control during the study. Initially both reactors were operated under methanogenic conditions. From the second stage reactor B was fed with 0.6 and 1 mg/L·d of oxygen (O2). Reactor A had diminution in chemical oxygen demand (COD) removal efficiency from 75±4% to 37±5%, by the increase of PRC loading rate from 750 to 1125 mg COD/L·d. In this reactor there was no styrene elimination. In reactor B the COD removal efficiency was between 73±5% and 80±2%, even with the addition of O2 and increase of the PRC loading rate, owing to oxygen being used in the partial oxidation of these compounds. In this reactor the yields were modified from 0.56 to 0.40 for CH4 and from 0.31 to 0.60 for CO2. The O2 in low concentrations increased 40.7% the consumption rates of acrylic acid, methyl acrylate and vinyl acetate, allowing styrene consumption with a rate of 0.103 g/L·d. Batch cultures demonstrated that under methanogenic and oxygen-limited methanogenesis conditions, the glucose was not used as an electron acceptor in the elimination of PRC.

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34

Queste, Bastien Y., Liam Fernand, Timothy D. Jickells, Karen J. Heywood, and Andrew J. Hind. "Drivers of summer oxygen depletion in the central North Sea." Biogeosciences 13, no. 4 (February 29, 2016): 1209–22. http://dx.doi.org/10.5194/bg-13-1209-2016.

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Abstract. In stratified shelf seas, oxygen depletion beneath the thermocline is a result of a greater rate of biological oxygen demand than the rate of supply of oxygenated water. Suitably equipped gliders are uniquely placed to observe both the supply through the thermocline and the consumption of oxygen in the bottom layers. A Seaglider was deployed in the shallow (≈ 100 m) stratified North Sea in a region of known low oxygen during August 2011 to investigate the processes regulating supply and consumption of dissolved oxygen below the pycnocline. The first deployment of such a device in this area, it provided extremely high-resolution observations, 316 profiles (every 16 min, vertical resolution of 1 m) of conductivity, temperature, and depth (CTD), dissolved oxygen concentrations, backscatter, and fluorescence during a 3-day deployment.The high temporal resolution observations revealed occasional small-scale events (< 200 m or 6 h) that supply oxygenated water to the bottom layer at a rate of 2 ± 1 µmol dm−3 day−1. Benthic and pelagic oxygen sinks, quantified through glider observations and past studies, indicate more gradual background consumption rates of 2.5 ± 1 µmol dm−3 day−1. This budget revealed that the balance of oxygen supply and demand is in agreement with previous studies of the North Sea. However, the glider data show a net oxygen consumption rate of 2.8 ± 0.3 µmol dm−3 day−1, indicating a localized or short-lived (< 200 m or 6 h) increase in oxygen consumption rates. This high rate of oxygen consumption is indicative of an unidentified oxygen sink. We propose that this elevated oxygen consumption is linked to localized depocentres and rapid remineralization of resuspended organic matter.The glider proved to be an excellent tool for monitoring shelf sea processes despite challenges to glider flight posed by high tidal velocities, shallow bathymetry, and very strong density gradients. The direct observation of these processes allows more up to date rates to be used in the development of ecosystem models.

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35

Queste, B. Y., L. Fernand, T. D. Jickells, K. J. Heywood, and A. J. Hind. "Drivers of summer oxygen depletion in the central North Sea." Biogeosciences Discussions 12, no. 11 (June 12, 2015): 8691–722. http://dx.doi.org/10.5194/bgd-12-8691-2015.

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Анотація:

Abstract. In stratified shelf seas, oxygen depletion beneath the thermocline is a result of a greater rate of biological oxygen demand than the rate of supply of oxygenated water. Suitably equipped gliders are uniquely placed to observe both the supply through the thermocline and the consumption of oxygen in the bottom layers. A Seaglider was deployed in the shallow (&approx; 100 m) stratified North Sea in a region of known low oxygen during August 2011 to investigate the processes regulating supply and consumption of dissolved oxygen below the pycnocline. The first deployment of such a device in this area, it provided extremely high resolution observations, 316 profiles (every 16 min, vertical resolution of 1 m) of CTD, dissolved oxygen concentrations, backscatter and fluorescence during a three day deployment. The high temporal resolution observations revealed occasional small scale events that supply oxygenated water into the bottom layer at a rate of 2±1 μmol dm−3 day−1. Benthic and pelagic oxygen sinks, quantified through glider observations and past studies, indicate more gradual background consumption rates of 2.5±1 μmol dm−3 day−1. This budget revealed that the balance of oxygen supply and demand is in agreement with previous studies of the North Sea. However, the glider data show a net oxygen consumption rate of 2.8±0.3 μmol dm−3 day−1 indicating a localised or short-lived increase in oxygen consumption rates. This high rate of oxygen consumption is indicative of an unidentified oxygen sink. We propose that this elevated oxygen consumption is linked to localised depocentres and rapid remineralisation of resuspensded organic matter. The glider proved to be an excellent tool for monitoring shelf sea processes despite challenges to glider flight posed by high tidal velocities, shallow bathymetry, and very strong density gradients. The direct observation of these processes allows more up to date rates to be used in the development of ecosystem models.

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36

Lan, Ping, Lei Zhong, Mei Li, Li Hong Lan, Tao Xie, and An Ping Liao. "Study of Oxygen Transfer Process of Starch Wastewater in the Shaking Bioreactor." Advanced Materials Research 393-395 (November 2011): 951–54. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.951.

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The oxygen transfer process of starch wastewater in the shaking bioreactor was studied. A biological oxygen consumption system was simulated by the sodium sulfite solution. The effects of liquid volume ratio in different volume shake flasks, rotational speed and temperature on the volumetric oxygen transfer coefficient were investigated. The results show that the volumetric oxygen transfer coefficient increased with the increasing rotational speed and temperature, while decreased with the increasing volume of shaking flasks.

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37

Cornett, R. J., and F. H. Rigler. "Simple Method of Measuring Seston Respiration in Oligotrophic Lakes." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 8 (August 1, 1986): 1660–63. http://dx.doi.org/10.1139/f86-205.

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A simple technique for measuring the oxygen consumption of seston in oligotrophic waters was developed and tested. Water samples were filtered through 0.45-μm filters. The filters were suspended in biological oxygen demand bottles containing lake water. NaN3 added to one bottle stopped respiration and served as a control to eliminate abiotic influences during the experiments. The difference in oxygen concentration between the respiring and control samples increased linearly over the 1-d experiments. Filtration of hypolimnetic water samples did not significantly alter the rate of oxygen consumption of the seston. Concentrating the seston increased the change in oxygen concentration so that respiration rates from 2 to 80 mg O2∙m−3∙d−1 could be measured. This method is simple, precise, and can measure very low rates of respiration directly.

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38

Mori, Fumiaki, Yu Umezawa, Ryuji Kondo, Gregory N. Nishihara, and Minoru Wada. "Potential oxygen consumption and community composition of sediment bacteria in a seasonally hypoxic enclosed bay." PeerJ 9 (August 10, 2021): e11836. http://dx.doi.org/10.7717/peerj.11836.

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The dynamics of potential oxygen consumption at the sediment surface in a seasonally hypoxic bay were monitored monthly by applying a tetrazolium dye (2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-2H-tetrazolium chloride [INT]) reduction assay to intact sediment core samples for two consecutive years (2012–2013). Based on the empirically determined correlation between INT reduction (INT-formazan formation) and actual oxygen consumption of sediment samples, we inferred the relative contribution of biological and non-biological (chemical) processes to the potential whole oxygen consumption in the collected sediment samples. It was demonstrated that both potentials consistently increased and reached a maximum during summer hypoxia in each year. For samples collected in 2012, amplicon sequence variants (ASVs) of the bacterial 16S rRNA genes derived from the sediment surface revealed a sharp increase in the relative abundance of sulfate reducing bacteria toward hypoxia. In addition, a notable shift in other bacterial compositions was observed before and after the INT assay incubation. It was Arcobacter (Arcobacteraceae, Campylobacteria), a putative sulfur-oxidizing bacterial genus, that increased markedly during the assay period in the summer samples. These findings have implications not only for members of Delta- and Gammaproteobacteria that are consistently responsible for the consumption of dissolved oxygen (DO) year-round in the sediment, but also for those that might grow rapidly in response to episodic DO supply on the sediment surface during midst of seasonal hypoxia.

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39

Endo, Toru, Takaaki Shigematsu, and Keisuke Mizuta. "CHARACTERISTICS OF OXYGEN CONSUMPTION BY SEDIMENT UNDER HYPOXIC CONDITION IN ENCLOSED COASTAL SEAS." Coastal Engineering Proceedings 1, no. 33 (October 18, 2012): 24. http://dx.doi.org/10.9753/icce.v33.posters.24.

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Enclosed coastal seas are suffering from serious environmental problems which caused by hypoxic condition occurring at the bottom of sea during summer season. Although many restoration technologies for supplying oxygen to the bottom of the sea are developed, it is necessary to understand the characteristics of sediment oxygen consumption (SOC) before applying these technologies in actual field because it is thought that the sediment oxygen demand increases under hypoxic condition. In this study, we carried out the field investigations for a year at Osaka bay by using a new chamber method which can measure SOC under hypoxic condition in order to examine the seasonal variations of SOC. In addition we conducted the laboratory experiment for examining the effects of biological and chemical factor on the SOC.

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40

Saldanha Matos, J., and E. Ribeiro de Sousa. "Dissolved Oxygen in Small Wastewater Collection Systems." Water Science and Technology 23, no. 10-12 (May 1, 1991): 1845–51. http://dx.doi.org/10.2166/wst.1991.0640.

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This paper concerns the dissolved oxygen (DO) balance in sewers and describes the experimental work and results obtained under a research project undertaken on a small wastewater collection system. For prediction of oxygen balance in sewers, reaeration and DO consumption, both within the stream and within the biological slime layer on the pipe wall, must be computed. In this study special emphasis is given to DO uptake by the slime layer. Comparison of experimental results concerning the activity of the slime layer with the results calculated by the Pomeroy and Parkhurst equation, the only one available in the literature applicable to sewers, did not lead to a good agreement. Under low flow conditions and high DO concentrations, a significative correlation was found between velocity and DO consumption by the slime layer. No correlation was found between DO concentration within the stream and DO utilization by the slime layer.

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41

Ferreira, Vicente, Vanesa Carrascon, Mónica Bueno, Maurizio Ugliano, and Purificación Fernandez-Zurbano. "Oxygen Consumption by Red Wines. Part I: Consumption Rates, Relationship with Chemical Composition, and Role of SO2." Journal of Agricultural and Food Chemistry 63, no. 51 (December 21, 2015): 10928–37. http://dx.doi.org/10.1021/acs.jafc.5b02988.

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42

Hirata, Akira, and Motoharu Noguchi. "Biological wastewater treatment by three-phase fluidization - characteristics and basic design method." Water Science and Technology 30, no. 11 (December 1, 1994): 91–100. http://dx.doi.org/10.2166/wst.1994.0549.

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A three-phase fluidized bed bioreactor is expected to treat wastewater quite efficiently, because the reactor has large specific surface area of biofilm, and oxygen for the biodegradation is simultaneously supplied from gas to liquid with oxygen consumption for biooxidation. However the reactor design and operation had been quite difficult particularly with a plug flow type fluidized bed, because of complicated behavior in the reactor. This paper concerns the current research work by the authors in focusing on the following characteristics and basic design method: (1) Behavior of biofilm immobilization on particulate media, fluidization of immobilized biofilm media and characteristics of oxygen absorption and substrates biodegradation. (2) Characteristics of biological treatment by immobilized biofilm. (3) Basic design method of a plug flow type three-phase fluidized bed bioreactor.

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43

Malin, David H., Jack G. Leavell, Kim Freeman, Wendy C. Kinzler, and Mary A. Reagan. "Continuous infusion of naloxone: Effects on behavior and oxygen consumption." Pharmacology Biochemistry and Behavior 22, no. 5 (May 1985): 791–95. http://dx.doi.org/10.1016/0091-3057(85)90529-5.

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44

Cobbs, Gary A., and James E. Alexander. "Assessment of oxygen consumption in response to progressive hypoxia." PLOS ONE 13, no. 12 (December 21, 2018): e0208836. http://dx.doi.org/10.1371/journal.pone.0208836.

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45

TOKUNAGA, Takahisa, Yuichi HAYAMI, and Katsunori KIMOTO. "BIOLOGICAL AND CHEMICAL OXYGEN CONSUMPTION ABOVE THE SEDIMENTS IN THE INNERWESTERN PART OF ARIAKE SEA." Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 72, no. 1 (2016): 12–21. http://dx.doi.org/10.2208/kaigan.72.12.

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46

Rong, Nan, and Baoqing Shan. "Total, chemical, and biological oxygen consumption of the sediments in the Ziya River watershed, China." Environmental Science and Pollution Research 23, no. 13 (March 30, 2016): 13438–47. http://dx.doi.org/10.1007/s11356-016-6541-4.

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47

Cunha-Santino, MB, SP Gouvêa, I. Bianchini Jr, and AAH Vieira. "Oxygen uptake during mineralization of photosynthesized carbon from phytoplankton of the Barra Bonita Reservoir: a mesocosm study." Brazilian Journal of Biology 68, no. 1 (February 2008): 115–22. http://dx.doi.org/10.1590/s1519-69842008000100016.

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This study aimed to discuss and describe the oxygen consumption during aerobic mineralization of organic products (cells and excretion products) from five unialgal cultures: Cryptomonas sp., Microcystis aeruginosa, Anabaena spiroides, Thalassiosira sp. and Aulacoseira granulata. These species were isolated from Barra Bonita reservoir (22º 29’ S and 48º 34’ W) and cultivated in the laboratory. From each culture, two decomposition chambers were prepared; each chamber contained about 130 mg.L-1 of carbon from water samples of the reservoir. The chambers were aerated and incubated in the dark at 20.0 ºC. The concentration of dissolved oxygen, pH values and electrical conductivity of the solutions were determined during a period of 10 days. The results indicated increases in oxygen consumption for all the solutions studied and also for electrical conductivity. The pH values presented a decreasing tendency throughout the experiment. Oxygen consumption varied from 43 (Aulacoseira granulata chamber) to 345 mg O2 g-1 C (Anabaena spiroides chamber). Decrease in pH values was probably due to increase in CO2 concentration from microbial respiration. Increase in electrical conductivity might be due to the liberation of ions during decomposition. The results demonstrate the potentiality of the studied genera in influencing oxygen availability followed by a die-off event. It also indicates the possibility of changing of the electrical conductivity and pH values in the water column due the aerobic algae mineralization.

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48

NOWAK, WERNER GEORG, and PETER HIETZ. "AN IMPROVED MODEL FOR THE DIFFUSION OF OXYGEN INTO RESPIRING WOOD." Journal of Biological Systems 19, no. 01 (March 2011): 101–12. http://dx.doi.org/10.1142/s0218339011003786.

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Diffusion is an essential component of gas exchange at the cellular and tissue level, and a mathematical analysis of diffusion is therefore important to model biological processes in many systems. When several factors affect diffusion, finding an explicit non-steady-state equation can be difficult or impossible. In an earlier work (J Biol Systems15:63–72), we described such a function for a system where oxygen diffuses from the air into a body that consumes oxygen, assuming that the exchange surface is flat. Here, an explicit solution is limited to the case where tissue oxygen consumption decreases linearly with oxygen concentration and reaches 0 only when all oxygen has been consumed. The objective of this article is the analysis of gas diffusion into a respiring tissue that is cylindrical, which applies to tree stems and is a more realistic approximation for many other organs. This approach differs from diffusion along a flat surface, resulting in formally completely different explicit solutions, and is more flexible allowing for different relationships between oxygen concentration and tissue oxygen consumption.

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49

Żyłka, Radosław, Wojciech Dąbrowski, Paweł Malinowski, and Beata Karolinczak. "Modeling of Electric Energy Consumption during Dairy Wastewater Treatment Plant Operation." Energies 13, no. 15 (July 22, 2020): 3769. http://dx.doi.org/10.3390/en13153769.

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Анотація:

The intensification of biological wastewater treatment requires the high usage of electric energy, mainly for aeration processes. Publications on energy consumption have been mostly related to municipal wastewater treatment plants (WWTPs). The aim of the research was to elaborate on models for the estimation of energy consumption during dairy WWTP operation. These models can be used for the optimization of electric energy consumption. The research was conducted in a dairy WWTP, operating with dissolved air flotation (DAF) and an activated sludge system. Energy consumption was measured with the help of three-phase network parameter transducers and a supervisory control and data acquisition (SCADA) system. The obtained models provided accurate predictions of DAF, biological treatment, and the overall WWTP energy consumption using chemical oxygen demand (COD), sewage flow, and air temperature. Using the energy consumption of the biological treatment as an independent variable, as well as air temperature, it is possible to estimate the variability of the total electric energy consumption. During the summer period, an increase in the organic load (expressed as COD) discharged into the biological treatment causes higher electric energy consumption in the whole dairy WWTP. Hence, it is recommended to increase the efficiency of the removal of organic pollutants in the DAF process. An application for the estimation of energy consumption was created.

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50

Comeau, Yves, Kenneth J. Hall, and William K. Oldham. "Indirect Polyphosphate Quantification in Activated Sludge." Water Quality Research Journal 25, no. 2 (May 1, 1990): 161–74. http://dx.doi.org/10.2166/wqrj.1990.009.

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Abstract An indirect biological method is presented to quantify the amount of polyphosphates in activated sludge obtained from wastewater treatment plants removing phosphate biologically. The method is based upon the property of such sludges to degrade polyphosphate reserves under anaerobic conditions as a result of acetate addition thereby releasing inorganic phosphate into solution. The addition of an excess of acetate ensures the consumption of any oxygen and nitrate, and the depletion of intracellular polyphosphates available for acetate storage. Thus, this new method offers a much easier approach than those previously available to quantify polyphosphate, one of the two storage polymers involved in the mechanism of biological phosphate removal.

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