Combined Fenton-MF process increases acrylonitrile removal

• Published in: Water science and technology 2003-01, Vol.47 (9), p.179-184
• Main Authors: CHANG, C.-Y, WANG, C.-C, CHANG, D.-J, CHANG, J.-S
• Format: Article
• Language: English
• Subjects: ABS resins; Acrylamide; Acrylic acid; Acrylics; Acrylonitrile; Acrylonitrile - chemistry; Acrylonitrile - isolation & purification; Applied sciences; Carcinogens - chemistry; Carcinogens - isolation & purification; Dosage; Exact sciences and technology; Fentons reagent; Filtration; Hydrogen peroxide; Hydrogen Peroxide - chemistry; Industrial wastewaters; Iron - chemistry; Microfiltration; Oxidation; Oxidation process; Oxidation-Reduction; pH effects; Pollution; Polyacrylic acid; Polymerization; Polymers; Raw materials; Removal; Resins; Wastewaters; Water Purification - methods; Water treatment and pollution
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2003.0520

The Fenton oxidation process is possessed of the advantages of both oxidation and coagulation processes. In addition to these functions, Fenton's reagent is also a typical initiator of polymerization. The application of the Fenton-microfiltration process for removal of acrylonitrile (AN), which is the major raw material for manufacturing ABS reins, was investigated. As for Fenton oxidation, in the range of pH 2 to pH 4, AN removal efficiency increased as the pH increased. In experiment of the same initial molar ratio of [FeSO4]0/[H2O2]0, the higher dosage can obtain the higher removal efficiency. At pH 4, the AN removal increased as the [H2O2]0 increased for each [FeSO4]0. Acrylic acid and acrylamide were detected in the solution after Fenton oxidation. On the other hand, acrylamide, polyacrylamide, and polyacrylic acid exist in the precipitate after the Fenton oxidation of AN solution. Moreover, it was also found that the operational mode is an important factor of the combined Fenton-MF process.