TREATMENT OF WASTEWATER CONTAINING ACID ORANGE 7 USING OZONATION PROCESS AND DETERMINATION OF THE INTERMEDIATE BY-PRODUCTS

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GHADERI ZAFREI FARHAD; AYATI BITA; GANJIDOUST HOSSEIN; SARAF MAMORI RASOL

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Journal: WATER AND WASTEWATER Year:2015 | Volume:26 | Issue:2 (96) Page(s): 13-22

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Information Journal Paper

Title

TREATMENT OF WASTEWATER CONTAINING ACID ORANGE 7 USING OZONATION PROCESS AND DETERMINATION OF THE INTERMEDIATE BY-PRODUCTS

Author(s)

GHADERI ZAFREI FARHAD | AYATI BITA | GANJIDOUST HOSSEIN | SARAF MAMORI RASOL | Issue Writer Certificate

Keywords

AZOQ2

CODQ2

LIGHT ABSORBANCEQ2

PHQ2

CONCENTRATIONQ2

Abstract

In this research, ozonation was used for treating wastewater containing acid orange 7 in a batch reactor. The independent parameters were initial dye CONCENTRATION, PH, and ozone mass and volumetric flow rates. The experiments were conducted with initial CONCENTRATION in the range of 5-250 mg/L, PH levels of 4-12, ozone mass flow rates of 12 and 20 mg/min, and volumetric flow rates of 0.5 and 1 L/min. Based on the results, the optimum conditions were achieved at a dye CONCENTRATION of 100 mg/L, a PH level of 11, an ozone mass flow rate of 20 mg/min, and an ozone volumetric flow rate of 1 L/min. Dye and COD removal efficiencies in these conditions were 100% and 30%, respectively, after 150 minutes. According to the absorbance curves, LIGHT ABSORBANCE of wastewater increased by 100% in the range of 450-500 nm by ozonation under the optimum conditions after dye removal. Based on the GC-Mass test and the values of LD50, acid orange 7 was converted to toxic compounds of aniline, 1-naphthylamine, 2-naphthol, and 1, 4-naphthalenediol indicating that ozonation had to be continued until complete COD removal. Based on the Taguchi experimental design data for real textile wastewater, the optimum conditions were obtained for a PH level of 11, a gas flow rate of 1 L/min, and an ozonation injection rate of 20 mg/min.

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APA: Copy

GHADERI ZAFREI, FARHAD, AYATI, BITA, GANJIDOUST, HOSSEIN, & SARAF MAMORI, RASOL. (2015). TREATMENT OF WASTEWATER CONTAINING ACID ORANGE 7 USING OZONATION PROCESS AND DETERMINATION OF THE INTERMEDIATE BY-PRODUCTS. WATER AND WASTEWATER, 26(2 (96)), 13-22. SID. https://sid.ir/paper/103879/en

Vancouver: Copy

GHADERI ZAFREI FARHAD, AYATI BITA, GANJIDOUST HOSSEIN, SARAF MAMORI RASOL. TREATMENT OF WASTEWATER CONTAINING ACID ORANGE 7 USING OZONATION PROCESS AND DETERMINATION OF THE INTERMEDIATE BY-PRODUCTS. WATER AND WASTEWATER[Internet]. 2015;26(2 (96)):13-22. Available from: https://sid.ir/paper/103879/en

IEEE: Copy

FARHAD GHADERI ZAFREI, BITA AYATI, HOSSEIN GANJIDOUST, and RASOL SARAF MAMORI, “TREATMENT OF WASTEWATER CONTAINING ACID ORANGE 7 USING OZONATION PROCESS AND DETERMINATION OF THE INTERMEDIATE BY-PRODUCTS,” WATER AND WASTEWATER, vol. 26, no. 2 (96), pp. 13–22, 2015, [Online]. Available: https://sid.ir/paper/103879/en

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