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Showing 1 to 20 of 26 for “"phosphorus uptake"”.
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Separation of phosphorus uptake and carbohydrate storage for intensive algal treatment processes
The student, Courtney Ackerman, accepted the attached license on 2019-07-11 at 13:59.
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Pinus taeda growth and phosphorus uptake as affected by interactions of mycorrhizae and supplemental phosphorus
A greenhouse study was initiated to asses P uptake, growth, colonization, total mycorrhizal P levels, and mycorrhizal polyphosphate levels in loblolly pine seedlings colonized with different ectomycorrhizal fungi and grown in a Piedmont soil. The pine seedlings were inoculated with one of four …
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The Effect of a Vesicular-Arbuscular Mycorrhizal Fungus of The Genus Endogone on Growth and Phosphorus Uptake of The Host Plant
Made available in DSpace on 2014-12-10T17:12:30Z (GMT). No. of bitstreams: 1 6612395.pdf: 2009555 bytes, checksum: 0b73a5779496029c64d03788e257b669 (MD5) Previous issue date: 1966
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Influence of Multiple Disturbances on Stream Structure and Function
… using solute additions to examine differences in phosphorus uptake and hydrology over the monitoring period. Influences of the press disturbance were evident in the mine-influenced reach where arsenic concentrations (254 ± 39 µg/L) were >30 higher than in the reference reach (8 ± 1 µg/L). However, …
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Optimizing Enhanced Biological Phosphorus Removal at WRRFs: Impact of Low DO Operation and Full-Scale Strategies
… a 53 percent reduction in average effluent total phosphorus (TP) concentrations from 2019 to 2023. This improvement in effluent quality coincided with the elimination of metal salt addition in 2023. Batch tests conducted from 2020 to 2024 indicated higher phosphorus release and aerobic uptake …
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The role of metals in enhanced biological phosphorus removal from wastewater
The role of metal cations in enhanced biological phosphorus removal (EBPR) from wastewater by activated sludge was investigated. Potassium and magnesium were simultaneously required for efficient EBPR. Neither potassium nor magnesium could induce enhanced phosphorus uptake on its own. Cations were …
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The fate of applied phosphorus on a piedmont soil and its effect on loblolly pine growth twenty years after application
A loblolly pine phosphorus fertilization trial was evaluated 20 years after establishment on a Tatum silt loam in the Virginia Piedmont. Triple superphosphate (TSP) was applied at 160 kg P/ha and ground rock phosphate (GRP) was applied at both 160 kg P/ha and 670 kg P/ha. Lime (4.48 T/ha) was …
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Removing Soluble Phosphorus from Tertiary Municipal Wastewater Using Phosphorus- Deprived, Filamentous Microalgae
… human health, and economies. The low levels of phosphorus remaining in the effluent of municipal wastewater treatment plants can contribute to HAB formation. To achieve more complete phosphorus removal, an effluent treatment method has been proposed that uses phosphorus-deprived, filamentous …
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The effect of influent organic compounds on the performance of biological nutrient removal systems
… was domestic sewage. Excess biological phosphorus removal and steady-state conditions were established before making experimental measurements, or adding supplemental substrate. The effects of separate addition of formic, acetic, propionic, butyric, isobutyric, valeric, and isovaleric …
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Method development for the characterization of intrinsic and extant kinetic parameters in microalgal cultures
… enable characterization of growth rate, nitrogen uptake, and phosphorus uptake. Quantification of these parameters will help to identify, characterize, and validate mechanistic links between process design, environmental conditions, nutrient recovery, and community function.
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Effects of Freshwater Salinization and Associated Base Cations on Bacterial Ecology and Water Quality
… and (3) bacterial respiration and nutrient uptake rates responded across a freshwater salinity gradient of different salt profiles. Survival rates (t90) of Escherichia coli, the EPA recommended freshwater FIB, increased by over 200% as salinity increased from 30 to 1,500 µS cm-1. Survival …
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Phosphorus and nitrogen metabolism in soybeans as influenced by potassium
… in two greenhouse experiments. Yield, nutrient uptake and changes in the distribution of cellular P and N compounds served as criteria for evaluating K effects. The yield increased exponentially with time regardless of K treatments; however, increasing K levels increased the rate of yield …
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Characterizing the Drivers of Carbon Use in Post-Anoxic Denitrification
… an increase in these rates correlated to higher phosphorus uptake rates, suggesting a dependence on the PAO population. Shorter aerobic times and more acetate in the anaerobic stage were shown to increase internal C denitrification rates to varying degrees, and this type of denitrification was …
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Operational parameters of the filamentous microbial process
… of the biological population, and the carbon to phosphorus ratio which limits organic removal efficiency. Findings of this study indicate that the sludges produced by the FAS process have settling characteristics and settleability remarkably similar to the solids of conventional activated sludge. …
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An examination of biological phosphorus removal using bacterial counting and poly-β-hydroxybutyrate analysis in batch and continuous flow systems
… of this study was to examine excess biological phosphorus removing bacterial populations and their substrate utilization mechanisms. This study was a smaller part of a overall study of temperature effects upon excess biological phosphorus removal. Bacterial populations in both a continuous flow …
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Nitrate utilization as the final electron acceptor in a biological phosphorus removal system
… as the final electron acceptor in biological phosphorus removal systems was investigated. The objectives of the study were (1) to determine whether polyphosphate (polyP) microorganisms can use nitrate as the final electron acceptor, and (2) to evaluate and compare polyP accumulation in the …
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A Study of the Effect of Potassium on the Yield, Duration of Stand and Chemical Composition of Alfalfa
… potash fertilization. 3. Yield variations due to phosphorus fertilization were insignificant. 4. Sodium gave increased yields at Glade Spring and Location A at Culpeper, but had little or no effect on yields at Culpeper at Location B. 5. In general, yields were decreased by the application of …
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Microbial and metazoan effects on nutrient dynamics during leaf decomposition in streams
… described spatial and temporal patterns of N and phosphorus uptake and mineralization by leaf-associated microbial assemblages in five southern Appalachian streams which spanned a gradient of nitrate availability. I found wide variations in nutrient fluxes across time and space, perhaps due to …
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Influence of phosphorus, sulfur, and molybdenum fertilization on the seedling vigor of selected legumes adapted to the Appalachian Region
… with or without P or S fertilization. Phosphorus uptake and Mo concentrations were increased in the plant tissues with either P or Mo fertilization.
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A STUDY OF NITROGEN AND PHOSPHORUS REMOVAL FROM MUNICIPAL SEWAGE IN SBR WITH THE APPLICATION OF THE TAGUCHI METHODS IN EXPERIMENTAL DESIGN
… growth SBR, were used to study nitrogen and phosphorus removal from municipal sewage. The influence of three controlling factors, namely Batch Loading Rate, Feed Pattern (initial feed or step feed), and Mixing/Aeration Ratio, on the performance was investigated through nine different …
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