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Occurrence and removal of sulfonamide antibiotics and antibiotic resistance genes in conventional and advanced drinking water treatment processes
- Source :
- Journal of Hazardous Materials. 360:364-372
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Sulfonamides (SAs) and sul antibiotic resistance genes (ARGs) have been extensively detected in drinking water sources and warrant further studies on the removal of them in different drinking water treatment processes (DWTPs). The prevalence of 13 SAs, sul1, sul2 and class I integrase gene intI1 in conventional and advanced processes was investigated using HPLC-MS/MS and real-time quantitative PCR (qPCR), respectively. The most abundant SA was sulfamethoxazole, with the maximum concentration of 67.27 ng/L. High concentration of sulfamethoxazole was also measured in finished water in both conventional (22.05 ng/L) and advanced (11.24 ng/L) processes. Overall, the removal efficiency of advanced process for each SA was higher than that of conventional process, except for sulfameter. The absolute concentrations of sul1, sul2 and intI1 in raw water ranged from 1.8 × 103 to 2.4 × 105 gene abundance/mL. After treatment, the residual sul ARGs and intI1 in finished water still remained at 102 - 104 gene abundance/mL. Conventional treatment units, including flocculation/sedimentation/sand filtration, played a more important role in removing sul1, sul2 and intI1 than oxidation (chlorination or ozonation) and granular activated carbon filtration treatments. Based on this work, more investigations are needed to help improve the removal of both antibiotics and ARGs in DWTPs.
- Subjects :
- Flocculation
Environmental Engineering
Sedimentation (water treatment)
medicine.drug_class
Health, Toxicology and Mutagenesis
0208 environmental biotechnology
Antibiotics
02 engineering and technology
010501 environmental sciences
01 natural sciences
Water Purification
Sulfameter
law.invention
law
medicine
Environmental Chemistry
Food science
Raw water
Waste Management and Disposal
Filtration
0105 earth and related environmental sciences
Sulfonamides
Chemistry
Drinking Water
Sulfamethoxazole
Drug Resistance, Microbial
Pollution
Anti-Bacterial Agents
020801 environmental engineering
Genes, Bacterial
Water treatment
Water Pollutants, Chemical
medicine.drug
Subjects
Details
- ISSN :
- 03043894
- Volume :
- 360
- Database :
- OpenAIRE
- Journal :
- Journal of Hazardous Materials
- Accession number :
- edsair.doi.dedup.....d0b19ff991aba3688c6a6f80ecfdb06a