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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.6
- 수록면
- 155 - 182 (28page)
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This study investigates the photocatalysis of dissolved organic matter (DOM) under ZnO-assisted artificial sunlight irradiation. Response surface methodology (RSM) based on central composite design (CCD) was utilized for design of experiments with ZnO dosage and pH. Fluorescence excitation–emission matrices coupled with parallel factor analysis (EEM-PARAFAC), dissolved organic carbon (DOC), and UV/Vis spectroscopy were used to track the DOM degradation during photocatalysis. EEM-PARAFAC analysis decomposed fluorescent DOM into two components (C1 and C2), identified as terrestrial humic-like organic matters. A pseudo-first-order DOM removal decreased with increased ZnO dosage, and were highest at pH 7 and lowest at pH 4. Response surface models of DOC, UV<SUB>254</SUB>, C1 and C2 removals demonstrated statistically significant and well matched with a second-order polynomial equation based on analysis of variance (ANOVA). First-order terms were the highest contributor, in which ZnO dosage had the highest level of significance, to the DOM removal. The optimal conditions for the photocatalysis of DOM were found to be ZnO 0.3 g/L and pH 10, showing that the removals of DOC, UV<SUB>254</SUB>, C1 and C2 were 57.9%, 94.5%, 100%, and 98.0%, respectively. In addition, ZnO showed a good stability and better photodegradation efficiency than TiO₂ in the DOM removal.
목차
ABSTRACT
1. Introduction
2. Experimental Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (16)
참고문헌 신청
Nguyen TT, Nam S-N, Son J, Oh J. Tungsten Trioxide (WO3)-assisted Photocatalytic Degradation of Amoxicillin by Simulated Solar Irradiation. Sci. Rep. 2019;9;1-18.
Coble PG. Characterization of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy. Mar. Chem. 1996;51;325-346.
Li P, Hur J. Utilization of UV-Vis spectroscopy and related data analyses for dissolved organic matter (DOM) studies: A review. Crit. Rev. Environ. Sci. Technol. 2017;3;131-154.
Matilainen A, Gjessing ET, Lahtinen T, Hed L, Bhatnagar A, Sillanpää M. An overview of the methods used in the characterisation of natural organic matter (NOM) in relation to drinking water treatment. Chemosphere 2011;83;1431-1442.
Murphy KR, Ruiz GM, Dunsmuir WTM, Waite TD. Optimized parameters for fluorescence-based verification of ballast water exchange by ships. Environ. Sci. Technol. 2006;40;2357-2362.
Coble PG. Characterization of marine and terrestrial DOM in seawater using excitation-emission matrix spectroscopy. Mar. Chem. 1996;51;325-346.
Li P, Hur J. Utilization of UV-Vis spectroscopy and related data analyses for dissolved organic matter (DOM) studies: A review. Crit. Rev. Environ. Sci. Technol. 2017;3;131-154.
Matilainen A, Gjessing ET, Lahtinen T, Hed L, Bhatnagar A, Sillanpää M. An overview of the methods used in the characterisation of natural organic matter (NOM) in relation to drinking water treatment. Chemosphere 2011;83;1431-1442.
Murphy KR, Ruiz GM, Dunsmuir WTM, Waite TD. Optimized parameters for fluorescence-based verification of ballast water exchange by ships. Environ. Sci. Technol. 2006;40;2357-2362.
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