Influence of ageing on the catalytic activity of ferric sludge for oxidation of Fe(II)


Tufekci N., Sarikaya H.

WATER SCIENCE AND TECHNOLOGY, cilt.38, sa.6, ss.129-137, 1998 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 6
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0273-1223(98)00574-5
  • Dergi Adı: WATER SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.129-137
  • İstanbul Üniversitesi Adresli: Evet

Özet

The catalytic effect of freshly formed or added ferric iron on the Fe(II) oxidation has been demonstrated by previous studies. High Fe(III) concentrations significantly accelerate the oxygenation rate. High Fe(III) concentrations can be maintained only by sludge recycle which eventually leads to sludge ages as high as 10 days. Therefore, the aim of this study was to determine whether ageing of ferric hydroxide sludge affects its catalytic effect on the oxidation of ferrous iron by aeration.