From UV spectra to degradability of industrial wastewater/definition and use of a “shape factor”

摘要: The measurement of global parameters such as TOC or specific compounds phenol is not sufficient for the characterization high loaded industrial wastewater. A previous study dealing with a treatability test based on use photochemical reactor and UV spectrophotometric control experiment has shown interest this alternative procedure biodegradability estimation samples. Starting from simple typology wastewater structure spectra, factor called “Shape Factor”, SF, ratio second derivative value at maximal wavelength corresponding peak absorbance, proposed spectra shape. related to probable presence major absorbing pollutant, after short kinetic chemical petrochemical degradation rate constant pseudo first order photo-reaction (calculated pollutant) seems be linked SF factor. For samples characterized by absorption peak(s) thus value, relatively important. example, effluents which are very structured, above 2.3 s -1 . In conclusion, spectroscopic must be, one hand, validated several effluents, and, other improved more complete study.