SYNTHESIS OF SULFUR-BASED WATER TREATMENT AGENT FROM SULFUR DIOXIDE WASTE STREAMS [electronic resource].
- Ames, Iowa : Iowa State University, 2002. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 42 pages : digital, PDF file
- Additional Creators:
- Iowa State University and United States. Department of Energy. Office of Scientific and Technical Information
- Absorption of sulfur dioxide from a simulated flue gas was investigated for the production of polymeric ferric sulfate (PFS), a highly effective coagulant useful in treatment of drinking water and wastewater. The reaction for PFS synthesis took place near atmospheric pressure and at temperatures of 30-80 C. SO₂ removal efficiencies greater than 90% were achieved, with ferrous iron concentrations in the product less than 0.1%. A factorial analysis of the effect of temperature, oxidant dosage, SO₂ concentration, and gas flow rate on SO₂ removal efficiency was carried out, and statistical analyses are conducted. The solid PFS was also characterized with different methods. Characterization results have shown that PFS possesses both crystalline and non-crystalline structure. The kinetics of reactions among FeSO₄ · 7H₂O, NaHSO₃ and NaClO₃ was investigated. The PFS product was used in pilot-scale tests at a municipal water treatment facility and gave good results in removal of turbidity and superior results in removal of disinfection byproduct precursors (TOC, DOC, UV-254) when compared with equal doses of ferric chloride.
- Published through SciTech Connect., 10/01/2002., Robert C. Brown; Maohong Fan; Adrienne Cooper., and (US)
- Type of Report and Period Covered Note:
- Other Publications; 09/01/2001 - 08/31/2002
- Funding Information:
View MARC record | catkey: 14073930