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Optimization of Fenton process for treatment of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution.
- Source :
-
Journal of hazardous materials [J Hazard Mater] 2009 Oct 30; Vol. 170 (2-3), pp. 666-72. Date of Electronic Publication: 2009 May 14. - Publication Year :
- 2009
-
Abstract
- The study examined the effect of operating conditions of the Fenton process on biodegradability improvement and mineralization of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution. In addition, degradation of amoxicillin, ampicillin and cloxacillin under optimum operating conditions were evaluated. The optimum operating conditions for an aqueous solution containing 104, 105 and 103 mg/L amoxicillin, ampicillin, and cloxacillin, respectively were observed to be COD/H2O2/Fe2+ molar ratio 1:3:0.30 and pH 3. Under optimum operating conditions, complete degradation of amoxicillin, ampicillin and cloxacillin occurred in 2 min. In addition, biodegradability improved from approximately 0 to 0.37 in 10 min, and COD and DOC degradation were 81.4% and 54.3%, respectively in 60 min. Maximum biodegradability (BOD5/COD ratio) improvement was achieved in 10, 20 and 40 min at antibiotics concentration 100, 250 and 500 mg/L, respectively for each antibiotic in aqueous solution. Increase in nitrate and ammonia concentration were observed due to mineralization of organic nitrogen, concentration of nitrate increased from 0.3 to 10 mg/L and concentration of ammonia increased from 8 to 13 mg/L in 60 min. The study indicated that Fenton process can be used for pretreatment of amoxicillin, ampicillin and cloxacillin wastewater for biological treatment.
- Subjects :
- Ammonia chemistry
Biodegradation, Environmental
Chromatography, High Pressure Liquid
Hydrogen Peroxide chemistry
Hydrogen-Ion Concentration
Indicators and Reagents
Iron chemistry
Minerals
Oxygen chemistry
Solutions
Water
Amoxicillin chemistry
Ampicillin chemistry
Anti-Bacterial Agents chemistry
Cloxacillin chemistry
Medical Waste Disposal methods
Waste Disposal, Fluid methods
Subjects
Details
- Language :
- English
- ISSN :
- 1873-3336
- Volume :
- 170
- Issue :
- 2-3
- Database :
- MEDLINE
- Journal :
- Journal of hazardous materials
- Publication Type :
- Academic Journal
- Accession number :
- 19515483
- Full Text :
- https://doi.org/10.1016/j.jhazmat.2009.05.013