The activated iron system for phosphorus recovery in aqueous environments

Jun Wan, Xiaoqing Jiang, Tian C. Zhang, Jiong Hu, Dana Richter-Egger, Xiaonan Feng, Aijiao Zhou, Tao Tao

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Finding a good sorbent for phosphorus (P) recovery from the aquatic environment is critical for preventing eutrophication and providing P resources. The activated iron system (mainly consisted of zero-valent iron (ZVI), Fe3O4 and Fe2+) has been reported to exhibit a favorable performance towards various contaminants in wastewater, but its effect on P recovery has not been studied systematically. In this study, we used Fe2+-nitrate pretreatment reaction to prepare the activated iron system and then applied it to P recovery. Results show that more than 99% P was removed from water in 60 min; co-existing anions (NO3, Cl and SO42−) and natural organic matter (NOM) had little effect on P removal. The P removal capacity of activated iron system is very high compared with currently reported sorbents. Externally-supplied Fe2+ plays an important role on P removal in the system. Regeneration study shows that the activated iron system exhibited stable P recovery ability by using 0.1 M NaOH solution. Various methods were applied to characterize the ZVI and iron corrosion, and results conclude that sorption precipitation, and co-precipitation contribute to P removal. This method will be promising and have an application potential in the field for efficient and cost-effective recovery of P with cheap microscale zero valent iron.

Original languageEnglish (US)
Pages (from-to)153-160
Number of pages8
JournalChemosphere
Volume196
DOIs
StatePublished - Apr 2018

Fingerprint

Phosphorus
Iron
phosphorus
Recovery
iron
Sorbents
Eutrophication
Corrosion
Coprecipitation
Waste Water
Nitrates
Biological materials
aquatic environment
Anions
Sorption
eutrophication
anion
corrosion
Regeneration
Wastewater

Keywords

  • Activated iron
  • Ferrous ion
  • Magnetite
  • Phosphorus recovery
  • Zero valent iron

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

The activated iron system for phosphorus recovery in aqueous environments. / Wan, Jun; Jiang, Xiaoqing; Zhang, Tian C.; Hu, Jiong; Richter-Egger, Dana; Feng, Xiaonan; Zhou, Aijiao; Tao, Tao.

In: Chemosphere, Vol. 196, 04.2018, p. 153-160.

Research output: Contribution to journalArticle

Wan, J, Jiang, X, Zhang, TC, Hu, J, Richter-Egger, D, Feng, X, Zhou, A & Tao, T 2018, 'The activated iron system for phosphorus recovery in aqueous environments', Chemosphere, vol. 196, pp. 153-160. https://doi.org/10.1016/j.chemosphere.2017.12.140
Wan, Jun ; Jiang, Xiaoqing ; Zhang, Tian C. ; Hu, Jiong ; Richter-Egger, Dana ; Feng, Xiaonan ; Zhou, Aijiao ; Tao, Tao. / The activated iron system for phosphorus recovery in aqueous environments. In: Chemosphere. 2018 ; Vol. 196. pp. 153-160.
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