TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water

TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) 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 TiO<sub>2</sub>-coated activated carbon (TiO<sub>2</sub>/PAC) has been synthesi...

Full description

Bibliographic Details
Main Authors: Xiao-Pin Guo, Peng Zang, Yong-Mei Li, Dong-Su Bi
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Water
Subjects:
2-MIB
TiO<sub>2</sub>/PAC
NOM
SEBC model
photocatalytic degradation
Online Access:https://www.mdpi.com/2073-4441/13/12/1622
id doaj-d3c7dc16f9f9408491aac684cc6c92c5
record_format Article
spelling doaj-d3c7dc16f9f9408491aac684cc6c92c52021-06-30T23:43:34ZengMDPI AGWater2073-44412021-06-01131622162210.3390/w13121622TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in WaterXiao-Pin Guo0Peng Zang1Yong-Mei Li2Dong-Su Bi3State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, ChinaShanghai Institute of Technology, School of Chemical and Environmental Engineering, Shanghai 201418, ChinaState Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, ChinaShanghai Institute of Technology, School of Chemical and Environmental Engineering, Shanghai 201418, China2-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 TiO<sub>2</sub>-coated activated carbon (TiO<sub>2</sub>/PAC) has been synthesized using the sol-gel method. A new TiO<sub>2</sub>/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-TiO<sub>2</sub> 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 TiO<sub>2</sub>/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO<sub>2</sub>/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 TiO<sub>2</sub>/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.https://www.mdpi.com/2073-4441/13/12/16222-MIBTiO<sub>2</sub>/PACNOMSEBC modelphotocatalytic degradation
collection DOAJ
language English
format Article
sources DOAJ
author Xiao-Pin Guo
Peng Zang
Yong-Mei Li
Dong-Su Bi
spellingShingle Xiao-Pin Guo
Peng Zang
Yong-Mei Li
Dong-Su Bi
TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
Water
2-MIB
TiO<sub>2</sub>/PAC
NOM
SEBC model
photocatalytic degradation
author_facet Xiao-Pin Guo
Peng Zang
Yong-Mei Li
Dong-Su Bi
author_sort Xiao-Pin Guo
title TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
title_short TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
title_full TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
title_fullStr TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
title_full_unstemmed TiO<sub>2</sub>-Powdered Activated Carbon (TiO<sub>2</sub>/PAC) for Removal and Photocatalytic Properties of 2-Methylisoborneol (2-MIB) in Water
title_sort tio<sub>2</sub>-powdered activated carbon (tio<sub>2</sub>/pac) for removal and photocatalytic properties of 2-methylisoborneol (2-mib) in water
publisher MDPI AG
series Water
issn 2073-4441
publishDate 2021-06-01
description 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 TiO<sub>2</sub>-coated activated carbon (TiO<sub>2</sub>/PAC) has been synthesized using the sol-gel method. A new TiO<sub>2</sub>/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-TiO<sub>2</sub> 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 TiO<sub>2</sub>/PAC. However, in the natural organic matter (NOM) bearing water, the removal efficiency of 2-MIB by TiO<sub>2</sub>/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 TiO<sub>2</sub>/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.
topic 2-MIB
TiO<sub>2</sub>/PAC
NOM
SEBC model
photocatalytic degradation
url https://www.mdpi.com/2073-4441/13/12/1622
work_keys_str_mv AT xiaopinguo tiosub2subpowderedactivatedcarbontiosub2subpacforremovalandphotocatalyticpropertiesof2methylisoborneol2mibinwater
AT pengzang tiosub2subpowderedactivatedcarbontiosub2subpacforremovalandphotocatalyticpropertiesof2methylisoborneol2mibinwater
AT yongmeili tiosub2subpowderedactivatedcarbontiosub2subpacforremovalandphotocatalyticpropertiesof2methylisoborneol2mibinwater
AT dongsubi tiosub2subpowderedactivatedcarbontiosub2subpacforremovalandphotocatalyticpropertiesof2methylisoborneol2mibinwater
_version_ 1721350593499365376

Similar Items