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Effect of particulate matters on inactivation of bacteriophage MS2 under irradiation above 320 nm

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Abstract

The inactivation of bacteriophage MS2 under irradiation above 320 nm was investigated, focusing on different solution pH, ionic strength, and Suwannee River natural organic matter (SRNOM) concentrations when solutions contained organic or inorganic particle matters. Inorganic and organic particles were modeled using kaolinite (KAO) and Microcystis aeruginosa (MA), respectively. The results showed that the two types of particles influenced on MS2 inactivation under different conditions. The lower pH contributed to the greater MS2 aggregation within pH range of 3.0 to 8.0, leading to an increasing inactivation rate. The presence of KAO induced reactive oxygen species (ROS) under the action of irradiation above 320 nm, which promoted the inactivation of MS2. By comparison, the \(^{1}O_{2}\) produced by MA after irradiation promoted the inactivation at pH < 6, whereas when the pH is ≥ 6, the inactivation effect of MS2 was lower than that of particle-free solution because MS2 was no longer aggregated and MA has a shading effect. In the presence of Na+ or Ca2+ cation, irradiation above 320 nm could not effectively inactivate the MS2 under particle-free solution. By comparison, KAO increased the inactivation efficiency as a photosensitizer. With the increase of Ca2+ concentration, MS2 was more easily adsorbed to MA than aggregation. Until Ca2+ concentration reached 20 mM, the inactivation effect in MA solution was enhanced. In the presence of SRNOM, the inactivation effect increased with the increase of SRNOM concentration. When the SRNOM was 20 mM, the inactivation increased in the particle-free solution due to the greater production of \(^{1}O_{2}\). Compared with the particle-free solution, the KAO and MA inactivation efficiency was lower.

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All data generated or analyzed during this study are included in this published article and its supplementary information files.

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Acknowledgements

The authors greatly appreciated the financial support from the Natural Science Foundation of China (Grant No. 51678255, 51178117), the Science and Technology Major Project of the Bureau of Science and Technology of Xiamen (Grant No. 3502Z20191012), and the Quanzhou City Sciences & Technology Program of China (Grant No. 2018C082R).

Funding

The Natural Science Foundation of China (Grant No. 51678255, 51178117), Science and Technology Major Project of the Bureau of Science and Technology of Xiamen (Grant No. 3502Z20191012), and Quanzhou City Sciences & Technology Program of China (Grant No. 2018C082R).

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Contributions

Xiaoxue Li: writing — original draft, visualization, formal analysis; Xiaochao Bi: writing — review & editing; Xiaoyang Shi: conceptualization, investigation; Rao La: validation; Ming-Lai Fu, Wenjie Sun: validation, writing — review & editing; Baoling Yuan: resources, supervision.

Corresponding author

Correspondence to Baoling Yuan.

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This is the first submission of this manuscript and no parts of this manuscript are being considered for publication elsewhere. All authors have approved this manuscript.

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The authors declare no known competing interests.

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Responsible Editor: Vitor Vasconcelos

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Highlights

• The interaction between MS2 and particles under irradiation above 320 nm was studied.

\({1}_{{O}_{2}}\) produced by MS2 capsid protein under irradiation promoted inactivation at low pH.

• High concentration of Ca2+ enhanced the inactivation in the solution with particles.

• The increased of SRNOM enhanced the inactivation whether were particles free or not.

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Supplementary file1 (DOCX 221 KB)

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Li, X., Bi, X., Shi, X. et al. Effect of particulate matters on inactivation of bacteriophage MS2 under irradiation above 320 nm. Environ Sci Pollut Res 29, 73976–73986 (2022). https://doi.org/10.1007/s11356-022-20811-z

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  • DOI: https://doi.org/10.1007/s11356-022-20811-z

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