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DEVELOPING MULTI-CRITERIA DECISION ANALYSIS AND TAGUCHI METHOD TO OPTIMIZE CIPROFLOXACIN REMOVAL FROM AQUEOUS PHASE
Autori: Marjan Salari
Data aparitiei: Iulie / 2019
Revista: Environmental Engineering and Management JournalVol. 18Nr. 7
ISSN: 1843 - 3707
Pret: 25.00 RON    
N.A.

In this research, optimization of Homogeneous Fenton process was performed using Multi-Criteria Decision Analysis (MCDA) and
Taguchi method to remove Ciprofloxacin (CIP) from an aqueous phase. Analytic Hierarchy Process (AHP) is one of the most
comprehensive systems designed for multi-criteria decision making. In this study, paired comparisons based on the AHP method
were performed for three criteria including (i) CIP removal, (ii) COD removal and (iii) Sludge to iron ratio (SIR) to select the best
catalyst among FeSO4.7H2O and FeCl2.4H2O. Taguchi method was used to optimize parameters and their levels via Minitab16®
Software. Influence of different parameters including initial CIP concentration, Fe (II) concentration, H2O2 concentration, pH, and
reaction time on CIP removal from the aqueous phase were investigated. Using Expert Choice® Software, and based on sensitivity
analysis results, importance percentages for FeCl2.4H2O and FeSO4.7H2O were estimated as 63% and 37%, respectively. Taguchi
optimal analysis indicated that a high S/N response ratio may be obtained with an initial CIP concentration of 10 mg/L, Fe2+
concentration of 50 mM, H2O2 concentration of 20 mM, pH of 3.5, and a reaction time of 20 min; making significance levels of the
parameters as 81.63, 76.13, 75.13, 75 and 79.25, respectively. Analysis of variance (ANOVA) under Taguchi method showed that
CIP concentration has the most impact on CIP removal with the highest sum of squares and lowest p-values (0.004). The maximum
removal efficiency for two objectives, the antibiotic and COD, were 89.5% and 48%, respectively.



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