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. |
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| 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 |
| 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] |
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| ISSN: | 2193567X |
| DOI: | 10.1007/s13369-025-10862-y |
