IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v13y2021i3p1502-d490868.html
   My bibliography  Save this article

Phosphate Removal Using Polyethylenimine Functionalized Silica-Based Materials

Author

Listed:
  • Maria Xanthopoulou

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

  • Dimitrios Giliopoulos

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

  • Nikolaos Tzollas

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

  • Konstantinos S. Triantafyllidis

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

  • Margaritis Kostoglou

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

  • Ioannis A. Katsoyiannis

    (Laboratory of Chemical and Environmental Technology, Department of Chemistry, Aristotle University of Thessaloniki, Box 116, 54124 Thessaloniki, Greece)

Abstract

In water and wastewater, phosphate anions are considered critical contaminants because they cause algae blooms and eutrophication. The present work aims at studying the removal of phosphate anions from aqueous solutions using silica particles functionalized with polyethylenimine. The parameters affecting the adsorption process such as pH, initial concentration, adsorbent dose, and the presence of competitive anions, such as carbonate, nitrate, sulfate and chromate ions, were studied. Equilibrium studies were carried out to determine their sorption capacity and the rate of phosphate ions uptake. The adsorption isotherm data fitted well with the Langmuir and Sips model. The maximum sorption capacity was 41.1 mg/g at pH 5, which decreased slightly at pH 7. The efficiency of phosphate removal adsorption increased at lower pH values and by increasing the adsorbent dose. The maximum phosphate removal was 80% for pH 5 and decreased to 75% for pH 6, to 73% for pH 7 and to 70% for pH 8, for initial phosphate concentration at about 1 mg/L and for a dose of adsorbent 100 mg/L. The removal rate was increased with the increase of the adsorbent dose. For example, for initial phosphate concentration of 4 mg/L the removal rate increased from 40% to 80% by increasing the dose from 0.1 to 2.0 g/L at pH 7. The competitive anions adversely affected phosphate removal. Though they were also found to be removed to a certain extent. Their co-removal provided an adsorbent which might be very useful for treating waters with low-level multiple contaminant occurrence in natural or engineered aquatic systems.

Suggested Citation

  • Maria Xanthopoulou & Dimitrios Giliopoulos & Nikolaos Tzollas & Konstantinos S. Triantafyllidis & Margaritis Kostoglou & Ioannis A. Katsoyiannis, 2021. "Phosphate Removal Using Polyethylenimine Functionalized Silica-Based Materials," Sustainability, MDPI, vol. 13(3), pages 1-17, February.
  • Handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1502-:d:490868
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/13/3/1502/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/13/3/1502/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Asterios Laskaridis & Ioannis Sarakatsianos & Nikolaos Tzollas & Ioannis A. Katsoyiannis, 2020. "Simultaneous Removal of Arsenate and Chromate from Ground- and Surface- Waters by Iron-Based Redox Assisted Coagulation," Sustainability, MDPI, vol. 12(13), pages 1-20, July.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Athanasia K. Tolkou & George Z. Kyzas & Ioannis A. Katsoyiannis, 2022. "Arsenic(III) and Arsenic(V) Removal from Water Sources by Molecularly Imprinted Polymers (MIPs): A Mini Review of Recent Developments," Sustainability, MDPI, vol. 14(9), pages 1-16, April.
    2. Athanasia K. Tolkou & Dimitrios G. Trikkaliotis & George Z. Kyzas & Ioannis A. Katsoyiannis & Eleni A. Deliyanni, 2023. "Simultaneous Removal of As(III) and Fluoride Ions from Water Using Manganese Oxide Supported on Graphene Nanostructures (GO-MnO 2 )," Sustainability, MDPI, vol. 15(2), pages 1-19, January.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:13:y:2021:i:3:p:1502-:d:490868. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.