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Showing 1 to 9 of 9 for “"phosphorus adsorption"”.
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Phosphorus adsorption by selected clay minerals
… the theoretical effect of certain cations on the adsorption of phosphorus by clay minerals. The various diffuse double layer and Donnan equilibrium theories were used in this theoretical treatment. Three standard clay minerals, a kaolinite, an illite and a montmorillonite were used in the …
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Phosphorus adsorption on sandy mine tailings: a comparison of treatments with fertilizers, wood ash, and compost
… Comparisons were based on standard Langmuir adsorption isotherms, Mehlich III extractable-P, and selected chemical and physical properties including pH, cation exchange capacity, compost rate, and specific surface area. Phosphorus adsorption decreased in the order UT, 1, 3, 6, 8, 9, and NS. …
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A Microcosm-Based Investigation into Oxidized Nitrogen Removal in the Hypolimnetic Waters of the Occoquan Reservoir of Northern Virginia
… the understanding of complex nitrate-sediment-phosphorus interactions. The microcosm system developed was a biphasic system, consisting of a single continuous stirred tank reactor (CSTR), or a series of CSTRs containing representative sediment and water samples from the reservoir. The system …
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Study of recycled concrete aggregate as filter media for phosphorus removal in synthetic wastewater
Phosphorus is one of the key nutrients that lead to eutrophication in surface water. However, existing conventional wastewater treatment systems for removing phosphorus are expensive and complex. Recycled concrete aggregate (RCA) may be an alternative solution for phosphorus removal. It can reduce …
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Observations and implications of sediment-water interactions in the Niagara impoundment of southwest Virginia
… a considerable reservoir of nitrogen and phosphorus, which, during the anoxic bottom conditions occurring during the summer months, caused an enhancement of concentrations in the water column. Conversely, during the winter months, the superficial sediments acted as a phosphorus and …
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Effect of Poultry Litter-Yard Waste Compost Application on Phosphorus Availability in Diverse Soils
… with relatively high P fixation capacities. Phosphorus sorption maximum for soils evaluated were as follows: 304 and 449 micrograms of P per gram for A horizon Coastal Plain soils (Series: Kempsville and Myatt, respectively); 487 micrograms of P per gram for an A horizon Ridge and Valley soil …
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LANTHANUM-BASED MATERIALS FOR NUTRIENT PHOSPHORUS REMOVAL FROM AQUEOUS SOLUTION: OPTIMIZATION, CHARACTERIZATION AND APPLICATION
The release of phosphorus into the environment has caused eutrophication, which disrupts the aquatic ecosystem and deteriorates the drinking water quality. Therefore, it is of utmost importance to eliminate the root cause, nutrient phosphorus from water or wastewater effectively and efficiently. …
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Relationships of soil test phosphorus with soil properties and phosphorus forms
… the key objectives of the present investigation. Phosphorus extracted by the four widely used soil extractants, i.e., Bray 1, Mehlich 1, Mehlich 3, and Olsen, represented less than 25 percent of the total P content in 43 Virginia soils from the Coastal Plain, Piedmont, and Ridge and Valley …
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Biogeochemistry of denitrifying bioreactors to enhance phosphorus removal from agricultural subsurface drainage
… drainage can also contribute to the loss of phosphorus from agricultural soil. Therefore, this thesis investigates the potential of DBRs to incorporate iron-based materials to sequester phosphorus and reduce pollution of waterways. There is some evidence suggesting low-level phosphorus …