TY  - JOUR
T1  - Optimization of Combined Ozone/Fenton Process on Olive Mill Wastewater Treatment
AU  - Cirik, Kevser
AU  - Kirmaci, Aslihan
AU  - Duyar, Ahmet
AU  - Akgul, Vildan
AU  - Akman, Dilek
PY  - 2018
DA  - June
Y2  - 2018
DO  - 10.29002/asujse.336035
JF  - Aksaray University Journal of Science and Engineering
JO  - Aksaray J. Sci. Eng.
PB  - Aksaray University
WT  - DergiPark
SN  - 2587-1277
SP  - 52
EP  - 62
VL  - 2
IS  - 1
LA  - en
AB  - The aim of this study was toinvestigate the applicability of Fenton process and combined ozone/Fentonprocess to remove color, soluble chemical oxygen demand (CODs),phenol, and dissolved organic carbon (DOC) from real olive mill wastewater(OMW). The treatability of OMW was investigated in three different study parts.Initially, Fenton process was optimized under varying H2O2/Fe2+molar ratios ranging between 10 and 20 at the constant H2O2concentration of 0.5 mM. The H2O2/Fe2+ molarratio of 10 was found optimum providing high color (51.6 %), CODs(58%), DOC (27.9%) and phenol removals (93.9%). Further, combined ozone/Fentonprocess was applied under gradually increasing dosages of Fe2+ and H2O2reagents at constant H2O2/Fe2+ molar ratio of10. The high color removal efficiency (51.6% color removal for Pt-Co) was obtained at the H2O2and Fe2+ molar ratio of 0.5/0.05. Additionally, CODs,color, DOC and phenol removal efficiencies improved at increasing reagentsconcentrations. However, the color removal efficiency was adversely affectedwhile no significant difference on CODs and phenol removal wasobserved at higher concentrations of molar concentrations above 0.5/0.05.Additionally, the results indicated that combined process enhanced treatmentperformance of OMW by 21%, 49% and 22% in terms of color, DOC and CODsremovals, respectively, compared to only-Fenton process. In the rest of thisstudy, combined ozone/Fenton process was optimized under varying ozonation time(60-120 min) at the optimum H2O2 and Fe2+molardosage of 0.5/0.05 obtained from previous parts. Ozonation time significantlyaffected the treatment performance, and optimum the reaction time wasdetermined as 90 minute in terms of the high treatment productivity and lowoperating cost resulted from minimum ozone consumption and short reaction time.
KW  - COD removal
KW  - Color removal
KW  - Ozone/Fenton process
KW  - Olive mill wastewater
KW  - Phenol removal
KW  - Phenol removal
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UR  - https://doi.org/10.29002/asujse.336035
L1  - https://dergipark.org.tr/en/download/article-file/458352
ER  -