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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.2
- 수록면
- 45 - 68 (24page)
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초록· 키워드
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Photoactive Ni-TiO₂ was synthesized through green hydrothermal method with preferential photocatalytic performance in visible and solar light for synthetic and formulated wastewater treatment. Incorporation of this transition metal into TiO₂ was examined by XRD, FTIR, UV–visible DRS, XPS, SEM-EDS and HRTEM analysis. According to the Langmuir–Hinshelwood model, the photodegradation of the chlorhexidine digluconate under solar (R²=0.986) and simulated visible light (R²=0.982), follows a pseudo-first-order kinetics. The interaction of operational fractions, such as S/C ratio, irradiation time, and pH of the reaction mixture, were evaluated using the RSM. Although complete mineralization of CHD was not achieved using Ni-TiO₂ under visible light, but the parent compound was mineralized to some extent, as demonstrated by TOC reduction (85.71%-synthetic wastewater and 61.17%-formulated wastewater), UV<SUB>254</SUB> (89.91% synthetic wastewater and 55.39%-formulated wastewater) and UV<SUB>280</SUB> (68.23%-synthetic wastewater and 68.23%-formulated wastewater) absorbance variations. Based on the identified transformed products, the possible degradation pathway was proposed and bacterial susceptibility test on Bacillus cereus DPAML065 was performed to evaluate the toxicity of oxidation intermediates. Comparative studies about energy consumption and removal efficiency during simulated visible light/Ni-TiO₂ and sunlight/ Ni-TiO₂ mediated treatment system for formulated wastewater revealed that sunlight/ Ni-TiO₂ mediated treatment system was high energy efficient (1.67 kWhKg<SUP>-1</SUP>) system.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (47)
참고문헌 신청
Santiago-Morales J, Gómez MJ, Herrera-López S, Fernández-Alba AR, García-Calvo E, Rosal R. Energy Efficiency for the Removal of Non-Polar Pollutants during Ultraviolet Irradiation, Visible Light Photocatalysis and Ozonation of a Wastewater Effluent. Water
Das R, Sarkar S, Bhattacharjee C. Photocatalytic Degradation of Chlorhexidine-A Chemical Assessment and Prediction of Optimal Condition by Response Surface Methodology. J. Water Process Eng.2014;2:79-86. https://doi.org/10.1016/j.jwpe.2014.05.005.
Khetan SK, Collins TJ. Human Pharmaceuticals in the Aquatic Environment : A Challenge to Green Chemistry Chem. Rev. 2007;107:2319-2364. https://doi.org/10.1021/cr020441w.
Majumder A, Gupta AK, Ghosal PS, Varma M. A Review on Hospital Wastewater Treatment: A Special Emphasis on Occurrence and Removal of Pharmaceutically Active Compounds, Resistant Microorganisms, and SARS-CoV-2. J. Environ. Chem. Eng. 2020;9(2):104812. http
Das R, Sarkar S, Chakraborty S, Choi H, Bhattacharjee C. Remediation of Antiseptic Components in Wastewater by Photocatalysis Using TiO2 Nanoparticles. Ind. Eng. Chem. Res. 2014;53(8):3012-3020. https://doi.org/10.1021/ie403817z.
Das R, Sarkar S, Bhattacharjee C. Photocatalytic Degradation of Chlorhexidine-A Chemical Assessment and Prediction of Optimal Condition by Response Surface Methodology. J. Water Process Eng.2014;2:79-86. https://doi.org/10.1016/j.jwpe.2014.05.005.
Khetan SK, Collins TJ. Human Pharmaceuticals in the Aquatic Environment : A Challenge to Green Chemistry Chem. Rev. 2007;107:2319-2364. https://doi.org/10.1021/cr020441w.
Majumder A, Gupta AK, Ghosal PS, Varma M. A Review on Hospital Wastewater Treatment: A Special Emphasis on Occurrence and Removal of Pharmaceutically Active Compounds, Resistant Microorganisms, and SARS-CoV-2. J. Environ. Chem. Eng. 2020;9(2):104812. http
Das R, Sarkar S, Chakraborty S, Choi H, Bhattacharjee C. Remediation of Antiseptic Components in Wastewater by Photocatalysis Using TiO2 Nanoparticles. Ind. Eng. Chem. Res. 2014;53(8):3012-3020. https://doi.org/10.1021/ie403817z.
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