Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water

Photocatalysis disinfection has great potential for irrigation water disinfection to improve fresh produce safety. Titanium dioxide (TiO2) nanoparticle (NP)-embedded cellulose acetate (CA) film has shown effectiveness against Escherichia coli (E. coli) O157:H7 in water. The current study evaluated t...

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Autores principales:	Jing Xie, Yen-Con Hung
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	e. coli o157:h7 natural water compound photocatalysis tio2 nanoparticle water disinfection Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/36856ae1260a4ee0a020a175af4f43fc
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spelling	oai:doaj.org-article:36856ae1260a4ee0a020a175af4f43fc2021-11-06T10:08:08ZEffect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water1606-97491607-079810.2166/ws.2020.271https://doaj.org/article/36856ae1260a4ee0a020a175af4f43fc2021-09-01T00:00:00Zhttp://ws.iwaponline.com/content/21/6/2825https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Photocatalysis disinfection has great potential for irrigation water disinfection to improve fresh produce safety. Titanium dioxide (TiO2) nanoparticle (NP)-embedded cellulose acetate (CA) film has shown effectiveness against Escherichia coli (E. coli) O157:H7 in water. The current study evaluated the effect of natural water compounds on the photo-disinfection efficacy of TiO2 NP-embedded CA film. Humic acid, calcium carbonate (CaCO3), and kaolin clay solutions were prepared at four concentrations, respectively. When concentration increased from 0 to 20 ml/L, inactivation of E. coli O157:H7 in humic acid, CaCO3, and kaolin clay solutions decreased from 6 log to 5, 4, and 2 log CFU/ml, respectively after 3 h treatment. Turbidity, UVT-254, water hardness, total suspended solids (TSS), and total organic carbon (TOC) of the solutions were measured. UVT-254 and turbidity had the highest correlation with the inhibition effect of water compounds on photo-disinfection efficacy. A prediction equation was developed with UVT-254 and water hardness as independent variables to predict photo-disinfection efficacy in natural water. E. coli O157:H7 decreased by 1 and 2.5 log CFU/ml in unfiltered and filtered natural creek water samples after treatment. The results from this study showed promise in the use of TiO2 NP-embedded CA film to inactivate pathogens in natural water. HIGHLIGHTS Natural water compounds affect TiO2 photo-disinfection efficacy in different degrees.; UV transmittance and water hardness are important water quality parameters that can affect TiO2 photo-disinfection efficacy.; Prediction equation was developed to predict TiO2 photo-disinfection efficacy in natural water.; Filtration is an effective pre-treatment method for improving TiO2 photo-disinfection in natural water.;Jing XieYen-Con HungIWA Publishingarticlee. coli o157:h7natural water compoundphotocatalysistio2 nanoparticlewater disinfectionWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 6, Pp 2825-2836 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	e. coli o157:h7 natural water compound photocatalysis tio2 nanoparticle water disinfection Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	e. coli o157:h7 natural water compound photocatalysis tio2 nanoparticle water disinfection Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Jing Xie Yen-Con Hung Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
description	Photocatalysis disinfection has great potential for irrigation water disinfection to improve fresh produce safety. Titanium dioxide (TiO2) nanoparticle (NP)-embedded cellulose acetate (CA) film has shown effectiveness against Escherichia coli (E. coli) O157:H7 in water. The current study evaluated the effect of natural water compounds on the photo-disinfection efficacy of TiO2 NP-embedded CA film. Humic acid, calcium carbonate (CaCO3), and kaolin clay solutions were prepared at four concentrations, respectively. When concentration increased from 0 to 20 ml/L, inactivation of E. coli O157:H7 in humic acid, CaCO3, and kaolin clay solutions decreased from 6 log to 5, 4, and 2 log CFU/ml, respectively after 3 h treatment. Turbidity, UVT-254, water hardness, total suspended solids (TSS), and total organic carbon (TOC) of the solutions were measured. UVT-254 and turbidity had the highest correlation with the inhibition effect of water compounds on photo-disinfection efficacy. A prediction equation was developed with UVT-254 and water hardness as independent variables to predict photo-disinfection efficacy in natural water. E. coli O157:H7 decreased by 1 and 2.5 log CFU/ml in unfiltered and filtered natural creek water samples after treatment. The results from this study showed promise in the use of TiO2 NP-embedded CA film to inactivate pathogens in natural water. HIGHLIGHTS Natural water compounds affect TiO2 photo-disinfection efficacy in different degrees.; UV transmittance and water hardness are important water quality parameters that can affect TiO2 photo-disinfection efficacy.; Prediction equation was developed to predict TiO2 photo-disinfection efficacy in natural water.; Filtration is an effective pre-treatment method for improving TiO2 photo-disinfection in natural water.;
format	article
author	Jing Xie Yen-Con Hung
author_facet	Jing Xie Yen-Con Hung
author_sort	Jing Xie
title	Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
title_short	Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
title_full	Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
title_fullStr	Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
title_full_unstemmed	Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water
title_sort	effect of water compounds on photo-disinfection efficacy of tio2 np-embedded cellulose acetate film in natural water
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/36856ae1260a4ee0a020a175af4f43fc
work_keys_str_mv	AT jingxie effectofwatercompoundsonphotodisinfectionefficacyoftio2npembeddedcelluloseacetatefilminnaturalwater AT yenconhung effectofwatercompoundsonphotodisinfectionefficacyoftio2npembeddedcelluloseacetatefilminnaturalwater
_version_	1718443787494096896

Effect of water compounds on photo-disinfection efficacy of TiO2 NP-embedded cellulose acetate film in natural water

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