Comparison of the differences in photochemical degradation of dissolved organic matter in rivers, lakes, and ponds by adding nanoparticles TiO2.
DOI:
https://doi.org/10.61173/0q5h7h66Keywords:
Dissolved organic matter, Photodegradation, Photocatalyst, Titanium dioxide, UV spectrophotometerAbstract
This study examines the photolysis of Dissolved Organic Matter (DOM) in urban rivers, lakes, and ponds using photocatalysis experiments. Employing a photochemical reactor and UV spectrophotometer, we investigated the precise effects of TiO2 nanoparticles and illumination duration on the degradation efficiency, rate, and kinetics in water bodies. Simultaneously, an analysis was conducted on the photochemical degradation process of DOM from various sources. The results demonstrate that the photocatalyst TiO2 can effectively improve DOM degradation and light absorption degradation efficiency, with longer illumination durations inversely correlating with DOM content. Both Dissolved Organic Carbon (DOC) and 254 nm absorbance degradation kinetics follow pseudo-first-order degradation kinetics. Notably, the pond exhibited the most significant change in degradation efficiency, reaching 96.7%. Our findings suggest that degradation efficiency in water bodies may be influenced by surrounding vegetation, population density, and rainfall conditions. This study contributes to a deeper understanding of DOM degradation processes by photocatalysts and provides a feasible method to effectively mitigate water pollution.
References
[1] Sen B, Alp M T, Sonmez F, et al., 2013. Relationship of algae to water pollution and waste water treatment. Water treatment, 14: 335-354. https://dx.doi.org/10.5772/51927
[2] Karlsson J, Bystr m P, Ask J, et al., 2009. Light limitation of nutrient poor lake ecosystems. Nature, 460(7254): 506-509. https://doi.org/10.1038/nature08179
[3] Pugliese A, Bidini G, Fantozzi F, 2015. Anaerobic digestion of macrophytes algae for eutrophication mitigation and biogas production. Energy Procedia, 82: 366-373. https://doi. org/10.1016/j.egypro.2015.11.806
[4] Liu Y Y, Qin J H, Liu C, et al., 2018. Characteristics of chromophoric dissolved organic matter (CDOM) in rivers of western Sichuan Plateau based on EEM-PARAFAC Analysis. Huan Jing ke Xue= Huanjing Kexue, 39(2): 720-728. https://doi. org/10.13227/j.hjkx.201708208
[5] He W, Bai Z L, Li Y L, et al., 2016. Advances in the characteristics analysis and source identification of the dissolved organic matter. Acta Scientiae Circumstantiae, 36(2): 359-372. https://doi.org/10.1007/s11430-015-5248-6
[6] Osburn C L, Handsel L T, Mikan M P, et al., 2012. Fluorescence tracking of dissolved and particulate organic matter quality in a river-dominated estuary. Environmental Science & Technology, 46(16): 8628-8636. https://doi.org/10.1021/ es3007723
[7] Passow U., 2002. Transparent exopolymer particles (TEP) in aquatic environments. Progress in oceanography, 55(3-4): 287- 333. https://doi.org/10.1016/S0079-6611(02)00138-6
[8] Xu H, Guo L., 2017. Molecular size-dependent abundance and composition of dissolved organic matter in river, lake and sea waters. Water Research, 117: 115-126. https://doi. org/10.1016/j.watres.2017.04.006
[9] Kim S, Kaplan L A, Hatcher P G, 2006. Biodegradable Dean&Francis dissolved organic matter in a temperate and a tropical stream determined from ultra‐high resolution mass spectrometry. Limnology and Oceanography, 51(2): 1054-1063. https://doi. org/10.4319/lo.2006.51.2.1054
[10] Guo W D, Cheng Y Y, Yu X X, et al., 2008. An overview of the photochemistry of marine chromophoric dissolved organic matter. Marine Science Bulletin, 27(3): 107-114. https://api. semanticscholar.org/CorpusID:130649404
[11] Lee J J, Suh J K, Hong J S, et al., 2008. Physicochemical characteristics of ZnS immobilized on spherical activated carbon for removing HA (humic acid). Materials Science Forum. Trans Tech Publications Ltd, 569: 37-40. https://doi.org/10.4028/www. scientific.net/MSF.569.37
[12] Nguyen T T, Nam S N, Kim J, et al., 2020. Photocatalytic degradation of dissolved organic matter under ZnO-catalyzed artificial sunlight irradiation system. Scientific Reports, 10(1): 13090. https://doi.org/10.1038/s41598-020-69115-7
[13] Nguyen T T, Nam S N, Oh J., 2020. Photo-Transformation of Effluent Organic Matter by ZnO-Based Sunlight Irradiation. Applied Sciences, 10(24): 9002. https://doi.org/10.3390/ app10249002
[14] Zhao C, Wang Z, Wang C, et al., 2018. Photocatalytic degradation of DOM in urban stormwater runoff with TiO2 nanoparticles under UV light irradiation: EEM-PARAFAC analysis and influence of co-existing inorganic ions. Environmental pollution, 243: 177-188. https://doi.org/10.1016/ j.envpol.2018.08.062
[15] Li B, Yuan D, Gao C, et al., 2022. Synthesis and characterization of TiO2/ZnO heterostructural composite for ultraviolet photocatalytic degrading DOM in landfill leachate. Environmental Science and Pollution Research, 29(56): 85510- 85524. https://doi.org/10.1007/s11356-022-21758-x
[16] Gao Y, Nie W, Zhu Q, et al., 2020. The polarization effect in surface‐plasmon‐induced photocatalysis on Au/TiO2 nanoparticles. Angewandte Chemie, 132(41): 18375-18380. https://doi.org/10.1002/ange.202007706
[17] Hwang J Y, Moon G, Kim B, et al., 2021. Crystal phasedependent generation of mobile OH radicals on TiO2: Revisiting the photocatalytic oxidation mechanism of anatase and rutile. Applied Catalysis B: Environmental, 286: 119905. https://doi. org/10.1016/j.apcatb.2021.119905
[18] Guo Weidong, Wang Chao, Xu Jing, et al., 2018. A review on the spectral analysis of marine organic matter. Marine Science Bulletin, 37(6): 4-17. DIO: 10.11840/ j.issn.1001-6392.2018.06.001.
[19] Pernet-Coudrier B, Clouzot L, Varrault G, et al., 2008. Dissolved organic matter from treated effluent of a major wastewater treatment plant: characterization and influence on copper toxicity. Chemosphere, 73(4): 593-599. https://doi. org/10.1016/j.chemosphere.2008.05.064
[20] Remucal C K, 2014. The role of indirect photochemical degradation in the environmental fate of pesticides: a review. Environmental Science: Processes & Impacts, 16(4): 628-653. https://doi.org/10.1039/C3EM00549F
[21] Dalrymple R M, Carfagno A K, Sharpless C M, 2010. Correlations between dissolved organic matter optical properties and quantum yields of singlet oxygen and hydrogen peroxide. Environ Sci Technol, 44: 5824–5829. https://doi.org/10.1021/ es101005u
[22] Peterson B M, McNally A M, Cory R M, Thoemke J D, Cotner J B, McNeill K, 2012. Spatial and temporal distribution of singlet oxygen in Lake Superior. Environ Sci Technol, 46: 7222–7229. https://doi.org/10.1021/es301105e
[23] Das A, Kumar P M, Bhagavathiachari M, et al., 2020. Hierarchical ZnO-TiO2 nanoheterojunction: A strategy driven approach to boost the photocatalytic performance through the synergy of improved surface area and interfacial charge transport. Applied Surface Science, 534: 147321. https://doi. org/10.1016/j.apsusc.2020.147321
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