Elimination of complex pollutants of antibiotics and antibiotic-resistant bacteria in water using magnetic nano onion carbon/PMS systems
The continuous and long-term residues of antibiotics in the aquatic environment are suggested to exert selective pressure on bacteria,induce the generation of resistant bacteria and antibiotic resistance genes,and bring threats to aquatic ecosystems and human health.In the present study,a magnetic nitrogen-doped nano-onion carbon coupled PMS oxidation system(NCNO/PMS)was used to treat the antibiotic sulfamethoxazole(SMX)and pathogens with sulfonamides resistance genes(ARB)in water at the same time.The surface structure and function of NCNO were analyzed by XRD,TEM and hysteresis loop characterization.The degradation efficiency of SMX in water and the inactivation efficiency of ARG by NCNO/PMS were investigated under different environmental conditions.The experimental results showed that NCNO could effectively improve the degradation efficiency of SMX in water by PMS.In addition,NCNO/PMS had excellent inactivation ability to pathogenic bacteria.This study provides a new idea and theoretical reference for the application and development of peroxymonosulfate oxidation technology for the removal of new biological risk pollutants.
magnetic carbon structureantibioticsresistant bacteriaperoxymonosulfate
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