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Published on: November 7, 2016
[Analysis of solid-liquid oxidizing poly silicic ferric sulfate (PSF-I)]
Ying Fu1, Shui-li Yu, Sheng-tao Fu
1School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
Huan Jing Ke Xue= Huanjing Kexue
|January 30, 2007
Summary
A novel inorganic coagulant, poly silicic ferric sulfate with integrated oxidation (PSF-I), enhances water treatment by utilizing added potassium permanganate for improved floc formation and contaminant removal. This advanced coagulant offers superior performance compared to traditional methods.
Area of Science:
- Water treatment technologies
- Inorganic chemistry
- Environmental engineering
Context:
- Conventional coagulants like poly ferric sulfate (PFS) rely on adsorption and co-precipitation for contaminant removal.
- There is a need for advanced coagulants with enhanced mechanisms for more efficient water purification.
- Oxidative processes can supplement traditional coagulation mechanisms.
Purpose:
- To synthesize and characterize a new inorganic coagulant, solid-liquid oxidative poly silicic ferric sulfate (PSF-I).
- To evaluate the coagulation performance of PSF-I and its filtrate against poly silicic ferric sulfate (PSF) and poly ferric sulfate (PFS).
- To investigate the impact of storage time on the efficacy of PSF-I.
Summary:
- PSF-I was prepared by adding potassium permanganate (KMnO4) and a stabilizer to PSF, modifying its microstructure and increasing Fe3+ ion peaks.
- Spectrophotometry and jar tests revealed that PSF-I exhibits superior coagulation efficiency, with an optimal dosage of 9 mg/L compared to 12 mg/L for its filtrate.
- Unlike PSF and PFS, PSF-I facilitates natural organic matter (NOM) removal through adsorption, charge-neutralization, co-precipitation, and oxidation.
Impact:
- PSF-I demonstrates a more comprehensive contaminant removal mechanism, including oxidation, leading to potentially cleaner water.
- The findings suggest that integrating oxidative properties into inorganic coagulants can significantly improve water treatment efficiency.
- This research provides a foundation for developing next-generation coagulants with enhanced functionalities for environmental remediation.
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