TY - JOUR
T1 - Ozone degradation of alkylbenzene sulfonate in aqueous solutions using a stirred tank reactor with recirculation
AU - Jurado-Alameda, Encarnación
AU - Vicaria, José M.
AU - Altmajer-Vaz, Deisi
AU - Luzón, Germán
AU - Jiménez-Pérez, José L.
AU - Moya-Ramírez, Ignacio
PY - 2012/12/1
Y1 - 2012/12/1
N2 - The degradation of linear alkylbenzene sulfonates (LAS) in aqueous solutions by ozone has been investigated. The ozonation process was performed in a stirred tank reactor with recirculation which simulates the clean-in-place process used in many industrial facilities. The gas-liquid mass transfer of ozone in a buffer solution at different temperatures (25-55°C) was also studied in the same device, revealing that ozone decomposition can be considered negligible under the experimental conditions assayed. The effect of the initial LAS concentration, temperature, and ozone concentration on the concentration of homologues and total LAS were analysed as a function of time. Both concentrations diminished with time, this effect being more significant when higher temperatures were assayed. The relative proportion of homologues shows that the homologues of higher chain length are degraded in a greater proportion than are the homologues with shorter chain lengths.
AB - The degradation of linear alkylbenzene sulfonates (LAS) in aqueous solutions by ozone has been investigated. The ozonation process was performed in a stirred tank reactor with recirculation which simulates the clean-in-place process used in many industrial facilities. The gas-liquid mass transfer of ozone in a buffer solution at different temperatures (25-55°C) was also studied in the same device, revealing that ozone decomposition can be considered negligible under the experimental conditions assayed. The effect of the initial LAS concentration, temperature, and ozone concentration on the concentration of homologues and total LAS were analysed as a function of time. Both concentrations diminished with time, this effect being more significant when higher temperatures were assayed. The relative proportion of homologues shows that the homologues of higher chain length are degraded in a greater proportion than are the homologues with shorter chain lengths.
KW - Ozone
KW - alkylbenzene sulfonate
KW - anionic surfactant
KW - oxidative processes
UR - http://www.scopus.com/inward/record.url?scp=84866128216&partnerID=8YFLogxK
U2 - 10.1080/10934529.2012.707537
DO - 10.1080/10934529.2012.707537
M3 - Artículo
SN - 1093-4529
VL - 47
SP - 2205
EP - 2212
JO - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
JF - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
IS - 14
ER -