Application of UV/TiO2 Advanced Oxidation in Treating Oily Compost Leachate Generated During Oily Sludge Composting
| Author(s): |
Reza Tajik
(Department of Occupational Health Engineering, Faculty of Health , Arak University of Medical Sciences , Arak , Iran)
Kazem Godini (Department of Environmental Health Engineering, School of Public Health , Hamedan University of Medical Sciences , Hamadan , Iran) Reza Saeedi (Department of Health, Safety, and Environment (HSE), School of Public Health and Safety , Shahid Beheshti University of Medical Sciences , Tehran , Iran) Masoumeh Mashayekhi (Department of Environmental Health Engineering, Faculty of Health , Arak University of Medical Sciences , Arak , Iran) Ali Koolivand (Department of Occupational Health Engineering, Faculty of Health , Arak University of Medical Sciences , Arak , Iran) |
|---|---|
| Medium: | journal article |
| Language(s): | English |
| Published in: | Civil and Environmental Engineering Reports, September 2019, n. 3, v. 29 |
| Page(s): | 241-251 |
| DOI: | 10.2478/ceer-2019-0039 |
| Abstract: |
In this work, oily compost leachate (OCL) generated during oily sludge composting was treated by UV/TiO2. OCL subsamples, gathered bi-weekly from the composting process, were thoroughly mixed and then filtered to reduce the solution turbidity. The effects of initial chemical oxygen demand (COD) concentration, UV type (A and C), pH (3, 7, and 11), reaction time (30, 60, 90, and 120 min), and TiO2 concentration (0.5, 1, and 2 g L−1) on the total petroleum hydrocarbons (TPH) and COD removal from OLC were examined. The results showed that the efficiency of the process improved with the increase in TiO2 concentration and reaction time and the decrease in pH and pollutant concentration. In the optimal conditions (UV-C, TiO2 concentration of 1 mg L−1, reaction time of 90 min, and pH of 3), 52.29% of TPH was removed. Moreover, 36.69 and 48.3% of TPH was reduced by UV-A/TiO2 and UV-C/TiO2, respectively in real conditions of OCL (pH = 6.3, COD = 1501. 24 mg L−1, and TPH = 170.12 mg L−1) during the 90 min reaction time. The study verified that UV/TiO2 has the potential to be applied to treat OCL. |
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data sheet - Reference-ID
10705188 - Published on:
19/02/2023 - Last updated on:
19/02/2023
