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Sustainable Resource Recovery Using Tailored Magnetic Iron Oxide Nanoadsorbents in a Continuous-Flow Fixed-Bed System.

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Title: Sustainable Resource Recovery Using Tailored Magnetic Iron Oxide Nanoadsorbents in a Continuous-Flow Fixed-Bed System.
Authors: Khan, Aftab Ahmad1 (AUTHOR) aabkhan@kfu.edu.sa, Afridi, Muhammad Naveed2 (AUTHOR) naveed@haut.edu.cn
Source: Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ). Jun2026, Vol. 51 Issue 12, p14947-14959. 13p.
Subject Terms: *Phosphate removal (Water purification), *Fixed bed reactors, *Sorbents, *Physisorption, *Serum albumin, *Steady-state flow, *Water pollution remediation, *Ferric oxide
Abstract: Remediation of phosphate from eutrophic water bodies poses a major environmental challenge. This study presents a novel bio-inspired magnetic non-absorbent, where bovine serum albumin (BSA) is used to modify magnetic iron oxide (MIO), enhancing its dispersibility, adsorption performance, and reusability. The BSA-MIO composite was synthesized via co-precipitation and applied in a fixed-bed column for continuous phosphate removal. The adsorbent (BSA-MIO) characterization was performed using FE-SEM, XRD, FTIR, and EDX analyses. The impact of feed concentration (5–10 mg P/L), flow rate (6–12 mL/min), and bed height (1.3–2.6 cm) on breakthrough curves was evaluated and modeled using Adams–Bohart (A–B), Thomas (TH), and Yoon–Nelson (Y–N) breakthrough models. The highest adsorption capacity (5.16 mg P/g) was achieved at 10 mg P/L, 6 mL/min, and 2.6 cm bed height with a maximum removal efficiency of 90.3%. Breakthrough and exhaustion times improved with the greater bed height and lower feed velocity. Desorption efficiency of 70.3% was achieved using 1 M NaOH and 0.1 M NaCl solution, demonstrating potential for adsorbent regeneration. The results highlight BSA-MIO as an efficient, magnetically recoverable, and suitable alternative for phosphate removal and recovery. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 194774450
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Sustainable Resource Recovery Using Tailored Magnetic Iron Oxide Nanoadsorbents in a Continuous-Flow Fixed-Bed System.
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  Data: <searchLink fieldCode="AR" term="%22Khan%2C+Aftab+Ahmad%22">Khan, Aftab Ahmad</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> aabkhan@kfu.edu.sa</i><br /><searchLink fieldCode="AR" term="%22Afridi%2C+Muhammad+Naveed%22">Afridi, Muhammad Naveed</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> naveed@haut.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Arabian+Journal+for+Science+%26+Engineering+%28Springer+Science+%26+Business+Media+B%2EV%2E+%29%22">Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. )</searchLink>. Jun2026, Vol. 51 Issue 12, p14947-14959. 13p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Phosphate+removal+%28Water+purification%29%22">Phosphate removal (Water purification)</searchLink><br />*<searchLink fieldCode="DE" term="%22Fixed+bed+reactors%22">Fixed bed reactors</searchLink><br />*<searchLink fieldCode="DE" term="%22Sorbents%22">Sorbents</searchLink><br />*<searchLink fieldCode="DE" term="%22Physisorption%22">Physisorption</searchLink><br />*<searchLink fieldCode="DE" term="%22Serum+albumin%22">Serum albumin</searchLink><br />*<searchLink fieldCode="DE" term="%22Steady-state+flow%22">Steady-state flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution+remediation%22">Water pollution remediation</searchLink><br />*<searchLink fieldCode="DE" term="%22Ferric+oxide%22">Ferric oxide</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Remediation of phosphate from eutrophic water bodies poses a major environmental challenge. This study presents a novel bio-inspired magnetic non-absorbent, where bovine serum albumin (BSA) is used to modify magnetic iron oxide (MIO), enhancing its dispersibility, adsorption performance, and reusability. The BSA-MIO composite was synthesized via co-precipitation and applied in a fixed-bed column for continuous phosphate removal. The adsorbent (BSA-MIO) characterization was performed using FE-SEM, XRD, FTIR, and EDX analyses. The impact of feed concentration (5–10 mg P/L), flow rate (6–12 mL/min), and bed height (1.3–2.6 cm) on breakthrough curves was evaluated and modeled using Adams–Bohart (A–B), Thomas (TH), and Yoon–Nelson (Y–N) breakthrough models. The highest adsorption capacity (5.16 mg P/g) was achieved at 10 mg P/L, 6 mL/min, and 2.6 cm bed height with a maximum removal efficiency of 90.3%. Breakthrough and exhaustion times improved with the greater bed height and lower feed velocity. Desorption efficiency of 70.3% was achieved using 1 M NaOH and 0.1 M NaCl solution, demonstrating potential for adsorbent regeneration. The results highlight BSA-MIO as an efficient, magnetically recoverable, and suitable alternative for phosphate removal and recovery. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=194774450
RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s13369-025-10862-y
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 14947
    Subjects:
      – SubjectFull: Phosphate removal (Water purification)
        Type: general
      – SubjectFull: Fixed bed reactors
        Type: general
      – SubjectFull: Sorbents
        Type: general
      – SubjectFull: Physisorption
        Type: general
      – SubjectFull: Serum albumin
        Type: general
      – SubjectFull: Steady-state flow
        Type: general
      – SubjectFull: Water pollution remediation
        Type: general
      – SubjectFull: Ferric oxide
        Type: general
    Titles:
      – TitleFull: Sustainable Resource Recovery Using Tailored Magnetic Iron Oxide Nanoadsorbents in a Continuous-Flow Fixed-Bed System.
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          Name:
            NameFull: Khan, Aftab Ahmad
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          Name:
            NameFull: Afridi, Muhammad Naveed
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          Dates:
            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 51
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              Value: 12
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            – TitleFull: Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. )
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