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Ikhlaq A, Masood Z, Qazi UY, Raashid M, Rizvi OS, Aziz HA, Saad M, Qi F, Javaid R. Efficient treatment of veterinary pharmaceutical industrial wastewater by catalytic ozonation process: degradation of enrofloxacin via molecular ozone reactions. Environ Sci Pollut Res Int 2024; 31:22187-22197. [PMID: 38403826 DOI: 10.1007/s11356-024-32605-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
The study focused on the efficacious performance of bimetallic Fe-Zn loaded 3A zeolite in catalytic ozonation for the degradation of highly toxic veterinary antibiotic enrofloxacin in wastewater of the pharmaceutical industry. Batch experiments were conducted in a glass reactor containing a submerged pump holding catalyst pellets at suction. The submerged pump provided the agitation and recirculation across the solution for effective contact with the catalyst. The effect of ozone flow (0.8-1.55 mg/min) and catalyst dose (5-15 g/L) on the enrofloxacin degradation and removal of other conventional pollutants COD, BOD5, turbidity was studied. In batch experiments, 10 g of Fe-Zn 3A zeolite efficiently removed 92% of enrofloxacin, 77% of COD, 69% BOD5, and 61% turbidity in 1 L sample of pharmaceutical wastewater in 30 min at 1.1 mg/min of O3 flow. The catalytic performance of Fe-Zn 3A zeolite notably exceeded the removal efficiencies of 52%, 51%, 52%, and 59% for enrofloxacin, COD, BOD5, and turbidity, respectively, achieved with single ozonation process. Furthermore, an increase in the biodegradability of treated pharmaceutical industrial wastewater was observed and made biodegradable easily for subsequent treatment.
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Affiliation(s)
- Amir Ikhlaq
- Institute of Environmental Engineering, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Zafar Masood
- Institute of Environmental Engineering, University of Engineering and Technology, Lahore, 54890, Pakistan
| | - Umair Yaqub Qazi
- Department of Chemistry, College of Science, University of Hafr Al Batin, P.O Box 1803, Hafr Al Batin, 39524, Kingdom of Saudi Arabia
| | - Muhammad Raashid
- Chemical Engineering Department KSK Campus, University of Engineering and Technology, Punjab, Pakistan
| | - Osama Shaheen Rizvi
- Institute of Environmental Engineering, University of Engineering and Technology, Lahore, 54890, Pakistan
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science & Engineering, (SBASSE), Lahore University of Management Sciences (LUMS), Sector U, DHA, Lahore Cantt, 54792, Pakistan
| | - Hafiz Abdul Aziz
- Baariq Pharmaceuticals, Sundar Industrial Estate, Lahore, Pakistan
| | | | - Fei Qi
- Beijing Forestry University, Haidian District, No. 35 Qinghua East Road, Beijing, 100083, People's Republic of China
| | - Rahat Javaid
- University of South Carolina, Columbia, SC, 29208, USA.
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