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Related Concept Videos

Factors Affecting Solubility04:01

Factors Affecting Solubility

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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
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The Phosphorus Cycle01:21

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Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
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Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method
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Techno-Economic Analysis of Phosphorus Removal Structures.

Isis S P C Scott1, Francisco Scott2, Tanner McCarty3

  • 1Northwest Soils & Irrigation Research Laboratory (USDA-ARS), Kimberly, Idaho 83341, United States.

Environmental Science & Technology
|August 15, 2023
PubMed
Summary

Phosphorus removal structures effectively capture phosphorus (P) pollution. Larger structures using industrial byproducts as sorption materials are most cost-effective, costing $100-$1300 per kg of P removed.

Keywords:
cost-benefit analysisphosphorusphosphorus removal structuresphosphorus sorption materialsremediation

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Area of Science:

  • Environmental Science
  • Water Quality Management
  • Environmental Engineering

Background:

  • Excess phosphorus (P) is a significant pollutant in aquatic ecosystems.
  • Phosphorus removal structures are landscape-scale filters designed to capture dissolved P from various water sources.
  • While environmental benefits are known, cost-effectiveness data for P sequestration by these structures is limited.

Purpose of the Study:

  • To compare the cost-effectiveness of prominent phosphorus removal structures.
  • To determine the average cost per kilogram (kg) of P removed by eight different structures.
  • To guide the optimal implementation of P removal structures for conservation.

Main Methods:

  • Calculated the average cost per kg of P removed for eight distinct P removal structures.
  • Analyzed a range of parameter assumptions to assess cost-effectiveness.
  • Compared the cost-effectiveness of structures utilizing different phosphorus sorption materials.

Main Results:

  • Larger structures are more cost-effective for P removal.
  • Regionally available phosphorus sorption materials that are byproducts of industrial production (e.g., metal shavings, steel slag) are more cost-effective than manufactured materials.
  • The average cost of P removal ranges from $100 to $1300 per kg, comparable to wastewater treatment costs.

Conclusions:

  • Industrial byproduct sorption materials and larger structure designs enhance cost-effectiveness in P removal.
  • The cost-effectiveness findings provide valuable data for implementing efficient P removal strategies.
  • This research supports conservation efforts by offering insights into optimizing P capture technologies.