Mineralization of sulfolane in aqueous solutions by Ozone/CaO_2 and Ozone/CaO with potential for field application

摘要

Mineralization of sulfolane in aqueous systems by CaO2/O-3 and CaO/O-3 was investigated in this study. If 1.6 g/L of oxidants (CaO2 and CaO) were used along with 5 L/min of O-3 in a batch reactor, degradation of sulfolane followed a pseudo-first order kinetics model. Both sulfolane and TOC were totally removed in less than 40 and 150 min respectively. For these treatments, the pH of the aqueous solutions was above 11, which made O-3 more effective in removing sulfolane. However, the high pH of the solution didn't improve TOC removal. For TOC removal the presence of CaO2 and CaO was necessary.