Efficient treatment of ammonia-nitrogen contaminated waters by nano zero-valent iron/zeolite composite

Osama Eljamal, Ramadan M. M. Eljamal, Ibrahim Maamoun, Ahmed M.E. Khalil, Shubair Tamer S R, Omar Falyouna, Yuji Sugihara

研究成果: ジャーナルへの寄稿学術誌査読

80 被引用数 (Scopus)

抄録

The aim of the present study is developing a magnetic nanoscale zero-valent iron/zeolite (nZVI/Z) composite towards the efficient removal of ammonia-nitrogen (NH4+-N) from aqueous solutions. Series of batch experiments were conducted to investigate the effect of different factors on the removal efficiency, including pH effect, aerobic/anaerobic, NH4+-N initial concentration, and temperature. The mixing mass ratio of nZVI/Z was optimized to reach the optimal ratio (0.25 g nZVI: 0.75 g zeolite), corresponding to the best removal efficiency of 85.7% after 120 min of reaction. Results revealed that nZVI/Z is efficient for NH4+-N removal from water at a wide pH range (3.0–10.0), with superiority to the neutral conditions. Moreover, aerobic ambient and normal temperature of 25 °C were the optimal conditions for the removal process of NH4+-N. Removal mechanisms involved electrostatic attraction, ion exchange, and adsorption. Generally, nZVI/Z has great potential towards the practical applications of NH4+-N removal from water.

本文言語英語
論文番号131990
ページ(範囲)131990
ジャーナルChemosphere
287
Pt 1
早期オンライン日8月 24 2021
DOI
出版ステータス出版済み - 1月 2022

!!!All Science Journal Classification (ASJC) codes

  • 環境工学
  • 化学一般
  • 環境化学
  • 汚染
  • 公衆衛生学、環境および労働衛生
  • 健康、毒物学および変異誘発

フィンガープリント

「Efficient treatment of ammonia-nitrogen contaminated waters by nano zero-valent iron/zeolite composite」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル