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The photocatalytic destruction of cimetidine using microwave-assisted TiO2 photocatalysts hybrid system.
J Hazard Mater. 2020 06 05; 391:122568.JH

Abstract

Microwave/Microwave discharge electrodeless lamp/Dissolved Oxygen/TiO2 photocatalyst hybrid system was applied to evaluate the photocatalytic degradation behavior of cimetidine, one of the waste drug components. The effects of microwave intensity, pH and dissolved oxygen (DO) concentration on the reaction rate of cimetidine (CMT) degradation were experimentally evaluated. In addition, the CMT decomposition reactions were compared by the combination of unit technologies of the hybrid system. As the microwave intensity and pH of the aqueous reactant solution increased, the CMT decomposition rate increased, and the DO concentration of the aqueous reactant solution had an optimum efficiency concentration. The highest CMT degradation efficiency was obtained by microwave/microwave discharge electrodeless lamp/TiO2 photocatalytic hybrid system at pH and DO concentration conditions (pH 10, DO 40 ppm). These results show that operation parameters and combination methods affect hydroxyl radical formation and CMT decomposition reactions on TiO2 surfaces, and efficient CMT decomposition reactions are formed through optimized hybrid systems. CMT is mineralized to CO2 and H2O through chemically active species (superoxide anion radical and hydroxyl radicals) via cimetine sulfoxide, 4-methyl-5-hydroxymethylimidazole, and sulfinyl-containing N-cyano-N',N'-dimethyl-guanidine.

Authors+Show Affiliations

School of Environmental Engineering, University of Seoul, 163 Seoulsiripdaero, Dongdaemun-gu, Seoul 02504, Republic of Korea.College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea.College of Pharmacy, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea.Korea Institute of Carbon Convergence Technology, R&D Division, 110-11 Banryong-ro, Jeonju 54853, Republic of Korea.Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea.Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea.Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea. Electronic address: jsc@sunchon.ac.kr.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

32224098

Citation

Park, Young-Kwon, et al. "The Photocatalytic Destruction of Cimetidine Using Microwave-assisted TiO2 Photocatalysts Hybrid System." Journal of Hazardous Materials, vol. 391, 2020, p. 122568.
Park YK, Ha HH, Yu YH, et al. The photocatalytic destruction of cimetidine using microwave-assisted TiO2 photocatalysts hybrid system. J Hazard Mater. 2020;391:122568.
Park, Y. K., Ha, H. H., Yu, Y. H., Kim, B. J., Bang, H. J., Lee, H., & Jung, S. C. (2020). The photocatalytic destruction of cimetidine using microwave-assisted TiO2 photocatalysts hybrid system. Journal of Hazardous Materials, 391, 122568. https://doi.org/10.1016/j.jhazmat.2020.122568
Park YK, et al. The Photocatalytic Destruction of Cimetidine Using Microwave-assisted TiO2 Photocatalysts Hybrid System. J Hazard Mater. 2020 06 5;391:122568. PubMed PMID: 32224098.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The photocatalytic destruction of cimetidine using microwave-assisted TiO2 photocatalysts hybrid system. AU - Park,Young-Kwon, AU - Ha,Hyung-Ho, AU - Yu,Young Hyun, AU - Kim,Byung-Joo, AU - Bang,Hye-Jin, AU - Lee,Heon, AU - Jung,Sang-Chul, Y1 - 2020/03/19/ PY - 2020/01/14/received PY - 2020/03/17/revised PY - 2020/03/18/accepted PY - 2020/4/1/pubmed PY - 2020/4/1/medline PY - 2020/4/1/entrez KW - Cimetidine KW - Dissolved oxygen KW - Microwave KW - TiO(2)photocatalyst KW - pH SP - 122568 EP - 122568 JF - Journal of hazardous materials JO - J. Hazard. Mater. VL - 391 N2 - Microwave/Microwave discharge electrodeless lamp/Dissolved Oxygen/TiO2 photocatalyst hybrid system was applied to evaluate the photocatalytic degradation behavior of cimetidine, one of the waste drug components. The effects of microwave intensity, pH and dissolved oxygen (DO) concentration on the reaction rate of cimetidine (CMT) degradation were experimentally evaluated. In addition, the CMT decomposition reactions were compared by the combination of unit technologies of the hybrid system. As the microwave intensity and pH of the aqueous reactant solution increased, the CMT decomposition rate increased, and the DO concentration of the aqueous reactant solution had an optimum efficiency concentration. The highest CMT degradation efficiency was obtained by microwave/microwave discharge electrodeless lamp/TiO2 photocatalytic hybrid system at pH and DO concentration conditions (pH 10, DO 40 ppm). These results show that operation parameters and combination methods affect hydroxyl radical formation and CMT decomposition reactions on TiO2 surfaces, and efficient CMT decomposition reactions are formed through optimized hybrid systems. CMT is mineralized to CO2 and H2O through chemically active species (superoxide anion radical and hydroxyl radicals) via cimetine sulfoxide, 4-methyl-5-hydroxymethylimidazole, and sulfinyl-containing N-cyano-N',N'-dimethyl-guanidine. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/32224098/The_photocatalytic_destruction_of_cimetidine_using_microwave-assisted_TiO2_photocatalysts_hybrid_system L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(20)30557-4 DB - PRIME DP - Unbound Medicine ER -
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