Work

Assessing Ammonium and Orthophosphate Ion Adsorption from Eutrophic Freshwaters with the Application of Iron-Modified Zeolites

Year: 2026

Type: article

Abstract: Eutrophic inland and coastal waters, created due to excessive concentrations of nutrients, cause harmful algal blooms and decreased water quality. Chemical adsorption of ammonium and orthophosphate ions with clay-based materials is an effective method for reducing nutrient pollution. This study assesses the adsorption of ammonium and orthophosphate ions using different iron-modified zeolites. Chemical composition analysis, in parallel with the kinetic efficiency results for ammonium and orthophosphate ion adsorption, indicates that the incorporation of iron-modified zeolites enables these ions to be adsorbed due to their increased surface area and improved ion exchange properties. Additionally, the Langmuir isotherm effectively captures the adsorption characteristics of iron-modified zeolites for ammonium and orthophosphate ions. This study proposes an ecological restoration approach, along with a sustainable water treatment solution, emphasizing the efficacy of iron-modified zeolites in environmental management.

Source: Inorganics

DOI: 10.3390/inorganics14020050

Authors: Irene Biliani, Ierotheos Zacharias

Institution: University of Patras

Language: English

Topic: Adsorption and biosorption for pollutant removal

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,654