TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
1
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
2
Shanghai Institute of Technology, School of Chemical and Environmental Engineering, Shanghai 201418, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Sergi Garcia-Segura
Water 2021, 13(12), 1622; https://doi.org/10.3390/w13121622
Received: 6 May 2021
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Revised: 2 June 2021
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Accepted: 4 June 2021
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Published: 9 June 2021
(This article belongs to the Special Issue Analytical Separation Techniques Coupled to Mass Spectrometry for Detection of Some Chemicals and Their Metabolites in Water)
2-methylisoborneol (2-MIB) is a common taste and odor compound caused by off-flavor secondary metabolites, which represents one of the greatest challenges for drinking water utilities worldwide. A TiO2-coated activated carbon (TiO2/PAC) has been synthesized using the sol-gel method. A new TiO2/PAC photocatalyst has been successfully employed in photodegradation of 2-MIB under UV light irradiation. In addition, the combined results of XRD, SEM-EDX, FTIR and UV-Vis suggested that the nano-TiO2 had been successfully loaded on the surface of PAC. Experimental results of 2-MIB removal indicated that the adsorption capacities of PAC for 2-MIB were higher than that of TiO2/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO2/PAC and PAC were 97.8% and 65.4%, respectively, under UV light irradiation. Moreover, it was shown that the presence of NOMs had a distinct effect on the removal of MIB by TiO2/PAC and PAC. In addition, a simplified equivalent background compound (SEBC) model could not only be used to describe the competitive adsorption of MIB and NOM, but also represent the photocatalytic process. In comparison to other related studies, there are a few novel composite photocatalysts that could efficiently and rapidly remove MIB by the combination of adsorption and photocatalysis.
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Keywords:
2-MIB; TiO2/PAC; NOM; SEBC model; photocatalytic degradation
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MDPI and ACS Style
Guo, X.-P.; Zang, P.; Li, Y.-M.; Bi, D.-S. TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water. Water 2021, 13, 1622. https://doi.org/10.3390/w13121622
AMA Style
Guo X-P, Zang P, Li Y-M, Bi D-S. TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water. Water. 2021; 13(12):1622. https://doi.org/10.3390/w13121622
Chicago/Turabian StyleGuo, Xiao-Pin, Peng Zang, Yong-Mei Li, and Dong-Su Bi. 2021. "TiO2-Powdered Activated Carbon (TiO2/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water" Water 13, no. 12: 1622. https://doi.org/10.3390/w13121622
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