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The Phosphorus Cycle

The Phosphorus Cycle

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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Related Experiment Video

Updated: Nov 15, 2025

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

Graphene-Based Composites for Phosphate Removal.

Sanny Verma¹, Mallikarjuna N Nadagouda²

¹Pegasus Technical Services, Inc., Cincinnati, Ohio 45219, United States.

|March 1, 2021

Summary

Graphene-based nanocomposites effectively remove phosphorus (P) from wastewater using adsorption. This review highlights recent advancements and future directions for sustainable P removal technologies.

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Last Updated: Nov 15, 2025

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Optimized Procedure for Determining the Adsorption of Phosphonates onto Granular Ferric Hydroxide using a Miniaturized Phosphorus Determination Method

Published on: May 18, 2018

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

Area of Science:

Environmental Science
Materials Science
Chemical Engineering

Background:

Phosphorus (P) removal from wastewater is crucial for preventing eutrophication.
Adsorption is a cost-effective and efficient method for P elimination.
Nanocomposites offer enhanced adsorption properties for P removal.

Purpose of the Study:

To review recent progress in phosphorus removal from wastewater using graphene-based composites via adsorption.
To summarize advancements over the last eight years.
To present future perspectives for this technology.

Main Methods:

Literature review focusing on graphene-based nanocomposites for phosphorus adsorption.
Analysis of adsorption mechanisms and performance metrics.
Synthesis and characterization of nanocomposite adsorbents.

Main Results:

Graphene-based nanocomposites demonstrate high efficiency in removing phosphate (PO4 3-) from wastewater.
These materials exhibit desirable properties like high surface area and tunable chemistry.
Adsorption performance is influenced by factors such as pH, adsorbent dosage, and initial P concentration.

Conclusions:

Graphene-based nanocomposites are a promising technology for sustainable phosphorus removal.
Further research is needed to optimize composite design and explore real-world applications.
This field holds significant potential for addressing water pollution challenges.