Abstract
Dissolved organic matter (DOM) in petrochemical reverse osmosis concentrate (ROC) is important for developing ROC advanced oxidation techniques. In this studty, DOM before and after ozonation was fractionated using resin adsorbents into five classes: hydrophobic bases (HoB), hydrophobic acids (HoA), weakly hydrophobic acids (WHoA), hydrophobic neutrals (HoN) and hydrophilic matter (HiM). Hydrophobic organics dominate in DOM, in which HoN and HoA account for 29.2% and 19.5%, respectively. Ozone significantly decreases the percentage of HoN, while increases the concentration of WHoA and HiM. The UV-Vis analysis shows that ozonation decreases the molecular weight of DOM. In view of FTIR analysis, the unsaturated groups and aliphatic structurs are destroyed greatly and converted to more C-O structures, which shows relatively high hydrophilicity and low molecular weight. Through the analysis of fluorescence spectroscopy, it is found that ozone decreases significantly the fluorescence intensity of humic-like and fulvic-like substances in DOM, while increases the fluorescence intensity of soluble microbial products. Keywords-reverse osmosis concentrate (ROC); ozone oxidation; DOM fractions
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
