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- Title
Effect of Iron Hydroxide on Phosphate Removal during Anaerobic Digestion of Activated Sludge.
- Authors
Stabnikov, V. P.; Tay, S. T.-L.; Tay, D.-Kh.; Ivanov, V. N.
- Abstract
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.
- Subjects
HYDROXIDES; IRON; SOIL composition; PHOSPHATES; SEWAGE sludge digestion; ANAEROBIC bacteria; FERMENTATION; WASTEWATER treatment
- Publication
Applied Biochemistry & Microbiology, 2004, Vol 40, Issue 4, p376
- ISSN
0003-6838
- Publication type
Article
- DOI
10.1023/B:ABIM.0000033914.52026.e5