Treatment and regeneration of nano-scale zero-valent iron spent in water remediation

Ahmed M.E. Khalil, Osama Eljamal, Ramadan Eljamal, Yuji Sugihara, Nobuhiro Matsunaga

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Nano-scale zero-valent iron (nZVI) has shown its promising treatment technique to decontaminate nitrate from water. However, research reports lack the treatment and regeneration of the spent reagent from the treatment process. This research utilized different derivatives of nZVIs in the purpose of nitrate treatment in its aqueous solution to show their different reactivities in applied batch experiments. Selected nanoparticles were investigated via transmission electron microscopy, surface characterization analyzer, X-ray diffraction and laser-scattering particle size analyzer. The fresh synthesized nZVI had the highest performance with complete nitrate removal within 60 min. Treated nZVI succeeded to regain the lost reactivity of aged nZVI and boosted its removal efficiency 10 times. On the other hand, the regenerated nZVI, recovered from spent synthesized nanoparticles, regained full and complete removal efficiency of nitrate, the same as the synthesized nZVI. The obtained result gives a great competitiveness of nZVI reagent to treat nitrate against any other treatment technology.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalEvergreen
Volume4
Issue number1
DOIs
Publication statusPublished - Jan 1 2017

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Remediation
remediation
Iron
regeneration
Nitrates
Water
nitrate
water
Nanoparticles
X ray lasers
Regain
iron nanoparticle
competitiveness
transmission electron microscopy
Particle size
Scattering
aqueous solution
Transmission electron microscopy
Derivatives
laser

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Surfaces, Coatings and Films
  • Management, Monitoring, Policy and Law

Cite this

Treatment and regeneration of nano-scale zero-valent iron spent in water remediation. / Khalil, Ahmed M.E.; Eljamal, Osama; Eljamal, Ramadan; Sugihara, Yuji; Matsunaga, Nobuhiro.

In: Evergreen, Vol. 4, No. 1, 01.01.2017, p. 21-28.

Research output: Contribution to journalArticle

Khalil, Ahmed M.E. ; Eljamal, Osama ; Eljamal, Ramadan ; Sugihara, Yuji ; Matsunaga, Nobuhiro. / Treatment and regeneration of nano-scale zero-valent iron spent in water remediation. In: Evergreen. 2017 ; Vol. 4, No. 1. pp. 21-28.
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