Dry and wet ozonation of denim: Degradation products, reaction mechanism, toxicity and cytotoxicity assessment

Sarra Ben Hamida; Sidra Iftekhar; Indu Ambat; Varsha Srivastava; Mika Sillanpää; Zahra Amri; Neji Ladhari

doi:10.1016/j.chemosphere.2018.03.199

Dry and wet ozonation of denim: Degradation products, reaction mechanism, toxicity and cytotoxicity assessment

Sarra Ben Hamida, Sidra Iftekhar, Indu Ambat, Varsha Srivastava, Mika Sillanpää, Zahra Amri, Neji Ladhari

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The study aims to identify the denim ozonation by-products under different operating conditions and investigate the chemical toxicity of these compounds via the inhibitory effect of the sample on the light emission of bioluminescent bacteria (Vibriofischeri) and on human health using the HepG2 human hepatoma cell line. Various by-products in treated denim extract were detected w gas chromatography-mass spectrometry (GC-MS) analysis. The results revealed that the main oxidation by-product was isatin (1H-indole-2,3-dione), which formed in excess amounts on wet ozonated denim. It was observed that this compound showed more toxicity when high ozone concentrations were used, especially in the presence of moisture. It exhibited a considerable antibacterial activity. EC₂₀ and EC₅₀ average values of 5.55% and 13.47% were obtained with a wet ozonation rinse bath at 48 g/N·m³, which makes it hazardous to aquatic environments.

Original language	English
Pages (from-to)	514-520
Number of pages	7
Journal	Chemosphere
Volume	203
DOIs	https://doi.org/10.1016/j.chemosphere.2018.03.199
Publication status	Published - Jul 2018
Externally published	Yes

Keywords

Cytotoxicity
Denim
Environment
Isatin
Ozone

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
General Chemistry
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.chemosphere.2018.03.199

Cite this

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title = "Dry and wet ozonation of denim: Degradation products, reaction mechanism, toxicity and cytotoxicity assessment",

abstract = "The study aims to identify the denim ozonation by-products under different operating conditions and investigate the chemical toxicity of these compounds via the inhibitory effect of the sample on the light emission of bioluminescent bacteria (Vibriofischeri) and on human health using the HepG2 human hepatoma cell line. Various by-products in treated denim extract were detected w gas chromatography-mass spectrometry (GC-MS) analysis. The results revealed that the main oxidation by-product was isatin (1H-indole-2,3-dione), which formed in excess amounts on wet ozonated denim. It was observed that this compound showed more toxicity when high ozone concentrations were used, especially in the presence of moisture. It exhibited a considerable antibacterial activity. EC20 and EC50 average values of 5.55% and 13.47% were obtained with a wet ozonation rinse bath at 48 g/N·m3, which makes it hazardous to aquatic environments.",

keywords = "Cytotoxicity, Denim, Environment, Isatin, Ozone",

author = "{Ben Hamida}, Sarra and Sidra Iftekhar and Indu Ambat and Varsha Srivastava and Mika Sillanp{\"a}{\"a} and Zahra Amri and Neji Ladhari",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = jul,

doi = "10.1016/j.chemosphere.2018.03.199",

language = "English",

volume = "203",

pages = "514--520",

journal = "Chemosphere",

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TY - JOUR

T1 - Dry and wet ozonation of denim

T2 - Degradation products, reaction mechanism, toxicity and cytotoxicity assessment

AU - Ben Hamida, Sarra

AU - Iftekhar, Sidra

AU - Ambat, Indu

AU - Srivastava, Varsha

AU - Sillanpää, Mika

AU - Amri, Zahra

AU - Ladhari, Neji

PY - 2018/7

Y1 - 2018/7

N2 - The study aims to identify the denim ozonation by-products under different operating conditions and investigate the chemical toxicity of these compounds via the inhibitory effect of the sample on the light emission of bioluminescent bacteria (Vibriofischeri) and on human health using the HepG2 human hepatoma cell line. Various by-products in treated denim extract were detected w gas chromatography-mass spectrometry (GC-MS) analysis. The results revealed that the main oxidation by-product was isatin (1H-indole-2,3-dione), which formed in excess amounts on wet ozonated denim. It was observed that this compound showed more toxicity when high ozone concentrations were used, especially in the presence of moisture. It exhibited a considerable antibacterial activity. EC20 and EC50 average values of 5.55% and 13.47% were obtained with a wet ozonation rinse bath at 48 g/N·m3, which makes it hazardous to aquatic environments.

AB - The study aims to identify the denim ozonation by-products under different operating conditions and investigate the chemical toxicity of these compounds via the inhibitory effect of the sample on the light emission of bioluminescent bacteria (Vibriofischeri) and on human health using the HepG2 human hepatoma cell line. Various by-products in treated denim extract were detected w gas chromatography-mass spectrometry (GC-MS) analysis. The results revealed that the main oxidation by-product was isatin (1H-indole-2,3-dione), which formed in excess amounts on wet ozonated denim. It was observed that this compound showed more toxicity when high ozone concentrations were used, especially in the presence of moisture. It exhibited a considerable antibacterial activity. EC20 and EC50 average values of 5.55% and 13.47% were obtained with a wet ozonation rinse bath at 48 g/N·m3, which makes it hazardous to aquatic environments.

KW - Cytotoxicity

KW - Denim

KW - Environment

KW - Isatin

KW - Ozone

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U2 - 10.1016/j.chemosphere.2018.03.199

DO - 10.1016/j.chemosphere.2018.03.199

M3 - Article

C2 - 29649693

AN - SCOPUS:85047500666

SN - 0045-6535

VL - 203

SP - 514

EP - 520

JO - Chemosphere

JF - Chemosphere

ER -

Dry and wet ozonation of denim: Degradation products, reaction mechanism, toxicity and cytotoxicity assessment

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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