TY - JOUR
T1 - Development of experimental design models to predict Photo-Fenton oxidation of a commercially important naphthalene sulfonate and its organic carbon content
AU - Arslan-Alaton Idil, I.
AU - Yalabik, Arzu Betul
AU - Olmez-Hanci, Tugba
PY - 2010/12/1
Y1 - 2010/12/1
N2 - In the present study, Photo-Fenton oxidation of the commercially important K-acid (2-naphthylamine-3,6,8-trisulfonic acid) was optimized and modeled by employing response surface methodology and central composite design. The experimental design tool was used to assess the influence of treatment time (tr), initial COD of aqueous K-acid solutions (CODo) as well as H2O2 and Fe2+ concentrations on K-acid, COD and TOC removal efficiencies. According to the established second-order polynomial regression models, K-acid removal efficiency was affected by the process variables in the following decreasing order; tr>CODo (negative impact)>Fe2+>H2O2, while the effect on COD and TOC removals was CODo (negative impact)>H2O2>tr>Fe2+. Analysis of variance indicated that the experimental design models obtained for the Photo-Fenton oxidation of aqueous K-acid and its organic carbon content (expressed as COD and TOC) were statistically significant and satisfactorily described the treatment process for the entire Photo-Fenton treatment period (up to 125min) as well as different treatment targets (partial and full oxidation) and initial COD values (150-750mg/L). Complete K-acid removal accompanied with high COD (70-100%) and TOC (55-100%) abatements were achieved under relatively mild Photo-Fenton treatment conditions.
AB - In the present study, Photo-Fenton oxidation of the commercially important K-acid (2-naphthylamine-3,6,8-trisulfonic acid) was optimized and modeled by employing response surface methodology and central composite design. The experimental design tool was used to assess the influence of treatment time (tr), initial COD of aqueous K-acid solutions (CODo) as well as H2O2 and Fe2+ concentrations on K-acid, COD and TOC removal efficiencies. According to the established second-order polynomial regression models, K-acid removal efficiency was affected by the process variables in the following decreasing order; tr>CODo (negative impact)>Fe2+>H2O2, while the effect on COD and TOC removals was CODo (negative impact)>H2O2>tr>Fe2+. Analysis of variance indicated that the experimental design models obtained for the Photo-Fenton oxidation of aqueous K-acid and its organic carbon content (expressed as COD and TOC) were statistically significant and satisfactorily described the treatment process for the entire Photo-Fenton treatment period (up to 125min) as well as different treatment targets (partial and full oxidation) and initial COD values (150-750mg/L). Complete K-acid removal accompanied with high COD (70-100%) and TOC (55-100%) abatements were achieved under relatively mild Photo-Fenton treatment conditions.
KW - Advanced oxidation processes
KW - Central composite design
KW - K-acid
KW - Naphthalene sulfonates
KW - Photo-Fenton treatment
KW - Response surface methodology
UR - http://www.scopus.com/inward/record.url?scp=78349310580&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2010.10.003
DO - 10.1016/j.cej.2010.10.003
M3 - Article
AN - SCOPUS:78349310580
SN - 1385-8947
VL - 165
SP - 597
EP - 606
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
IS - 2
ER -