The effect of surfactants on the ozonation of o-cresol in aqueous solutions in a rotating packed contactor.
Steady-state dissolved ozone concentrations were maintained relatively constant for experiments on ozone dissolution conducted in the presence of various amounts of sodium dodecyl sulphate (SDS) and Triton X-100 (TX-100), an anionic surfactant and a nonionic surfactant, respectively. Ozonation in a rotating packed contactor has been shown to be feasible for achieving nearly complete decomposition of o-cresol within about 10 minutes of reaction time for most experiments conducted. The temporal decomposition behaviour of o-cresol in aqueous solution by ozonation was described by a two-step pseudo-first-order reaction kinetics. Even though the presence of SDS and TX-100 slightly affected the decomposition rate constant of o-cresol by ozonation in the rotating packed contactor, the mineralization of total organic carbon was apparently reduced with the addition of SDS and TX-100.
Ku
Young
Y
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan. ku508@mail.ntust.edu.tw
Ji
Yan-Shiun
YS
Chen
Hua-Wei
HW
Chou
Yiang-Chen
YC
Chang
Ching-Yuan
CY
D003408:Cresols / Q000737:chemistry*; D007700:Kinetics; D017830:Octoxynol / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry*; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D003408:Cresols; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; D012967:Sodium Dodecyl Sulfate; D010126:Ozone; D017830:Octoxynol; C034047:2-cresol