Study on the effect of a tea polyphenol disinfectant on antibiotic resistance genes in drinking water. Issue 12 (31st October 2022)

• Record Type: Journal Article
• Authors: Li, Jing; Feng, Cuimin; Xin, Bo
• Is Part Of: Environmental science. Volume 8:Issue 12(2022)
• Page Start: 3101
• Page End: 3112
• Publication Date: 2022-10-31
• Subjects: Water-supply -- Periodicals; Water security -- Periodicals; Water resources development -- Periodicals; Water chemistry -- Periodicals; 553.705
• DOI: 10.1039/d2ew00118g
• Languages: English
• ISSNs: 2053-1400

Abstract

Abstract : In order to improve the ability of ozone (O3 ) and ultraviolet (UV) disinfection to remove antibiotic resistance genes (ARGs) and reduce the risk of DBPs, tea polyphenols (TPs) instead of chlorine preparations were used as auxiliary disinfectant. Abstract : In order to improve the ability of ozone (O3 ) and ultraviolet (UV) disinfection processes to remove antibiotic resistance genes (ARGs) and reduce the risk of DBPs, tea polyphenols (TPs) instead of chlorine preparations were used as their auxiliary disinfectant. The effects of O3 -TP and UV-TP on ARGs and the relationship between microbial community change and ARG removal were analyzed by metagenomic sequencing. The results showed that O3 -TP and UV-TP disinfection processes could effectively remove specific types of ARGs and improve the water quality safety of drinking water distribution systems. The reduction of the relative abundances of Acinetobacter, Methylophilus, Acidovorax, Massilia, Sphingopyxis in Proteobacteria, Mycobacterium in Actinobacteria, and Firmicutes by the two disinfection processes was the reason for the decrease in the relative abundances of β-lactam, some aminoglycoside and tetracycline resistance gene subtypes. The wider removal range of ARGs by the O3 -TP disinfection process may be due to its better effect on reducing the microbial diversity of water samples and controlling the relative abundances of Bacteroidetes and Pseudomonas ( Proteobacteria ) than UV-TP. Tea polyphenols are expected to partially or completely replace chlorine preparations under specific water quality conditions and become the first choice O3 and UV auxiliary disinfectant.