Applied Biochemistry and Microbiology

, Volume 40, Issue 4, pp 376–380 | Cite as

Effect of Iron Hydroxide on Phosphate Removal during Anaerobic Digestion of Activated Sludge

  • V. P. Stabnikov
  • S. T.-L. Tay
  • D.-Kh. Tay
  • V. N. Ivanov


The addition of iron (III) hydroxide during methanogenic digestion of activated sludge by anaerobic sludge displaying an iron-reducing activity resulted in a microbial reduction of iron (III) with the formation of iron (II), capable of precipitating phosphates. The feasibility of eliminating 66.6 to 99.6% of the dissolved phosphate at initial concentrations of 1000 to 3500 mg PO3-4/l by adding 6420 mg/l iron (III) hydroxide into a reactor for anaerobic fermentation of activated sludge was analyzed. The optimal ratio of iron (III) added to dissolved phosphate removed (mg) providing a 95% removal amounted to 2 : 1. These results may be used in new technology for anaerobic wastewater treatment with phosphate removal.


Iron Phosphate Wastewater Fermentation Hydroxide 
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Copyright information

© MAIK “Nauka/Interperiodica” 2004

Authors and Affiliations

  • V. P. Stabnikov
    • 1
  • S. T.-L. Tay
    • 2
  • D.-Kh. Tay
    • 2
  • V. N. Ivanov
    • 3
    • 4
  1. 1.Ukrainian State University of Food TechnologiesKievUkraine
  2. 2.Nanyang Technological UniversitySingapore
  3. 3.Ukrainian Branch of the International Center of Scientific CultureKievUkraine
  4. 4.Currently at Nanyang Technological UniversitySingapore

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