Oxidation of municipal wastewater by free radicals mechanism. A UV/Vis spectroscopy study

E. Giannakopoulos; E. Isari; K. Bourikas; H. K. Karapanagioti; G. Psarras; G. Oron; I. K. Kalavrouziotis

doi:10.1016/j.jenvman.2016.07.055

Oxidation of municipal wastewater by free radicals mechanism. A UV/Vis spectroscopy study

E. Giannakopoulos, E. Isari, K. Bourikas, H. K. Karapanagioti, G. Psarras, G. Oron, I. K. Kalavrouziotis

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

30 Scopus citations

Abstract

This study investigates the oxidation of municipal wastewater (WW) by complexation with natural polyphenols having radical scavenging activity, such as (3,4,5 tri-hydroxy-benzoic acid) gallic acid (GA) in alkaline pH (>7), under ambient O₂ and temperature. Physicochemical and structural characteristics of GA-WW complex-forming are evaluated by UV/Vis spectroscopy. The comparative analysis among UV/Vis spectra of GA monomer, GA-GA polymer, WW compounds, and GA-WW complex reveals significant differences within 350–450 and 500–900 nm. According to attenuated total reflectance (ATR) spectroscopy and thermogravimetric analysis (TGA), these spectra differences correspond to distinct complexes formed. This study suggests a novel role of natural polyphenols on the degradation and humification of wastes.

Original language	English
Pages (from-to)	186-194
Number of pages	9
Journal	Journal of Environmental Management
Volume	195
DOIs	https://doi.org/10.1016/j.jenvman.2016.07.055
State	Published - 15 Jun 2017

Keywords

Complexation
Free radicals
Municipal wastewater
Oxidation
Polyphenols

ASJC Scopus subject areas

Environmental Engineering
Waste Management and Disposal
Management, Monitoring, Policy and Law

UN SDGs

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

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10.1016/j.jenvman.2016.07.055

Cite this

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title = "Oxidation of municipal wastewater by free radicals mechanism. A UV/Vis spectroscopy study",

abstract = "This study investigates the oxidation of municipal wastewater (WW) by complexation with natural polyphenols having radical scavenging activity, such as (3,4,5 tri-hydroxy-benzoic acid) gallic acid (GA) in alkaline pH (>7), under ambient O2 and temperature. Physicochemical and structural characteristics of GA-WW complex-forming are evaluated by UV/Vis spectroscopy. The comparative analysis among UV/Vis spectra of GA monomer, GA-GA polymer, WW compounds, and GA-WW complex reveals significant differences within 350–450 and 500–900 nm. According to attenuated total reflectance (ATR) spectroscopy and thermogravimetric analysis (TGA), these spectra differences correspond to distinct complexes formed. This study suggests a novel role of natural polyphenols on the degradation and humification of wastes.",

keywords = "Complexation, Free radicals, Municipal wastewater, Oxidation, Polyphenols",

author = "E. Giannakopoulos and E. Isari and K. Bourikas and Karapanagioti, \{H. K.\} and G. Psarras and G. Oron and Kalavrouziotis, \{I. K.\}",

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doi = "10.1016/j.jenvman.2016.07.055",

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AU - Giannakopoulos, E.

AU - Isari, E.

AU - Bourikas, K.

AU - Karapanagioti, H. K.

AU - Psarras, G.

AU - Oron, G.

AU - Kalavrouziotis, I. K.

PY - 2017/6/15

Y1 - 2017/6/15

N2 - This study investigates the oxidation of municipal wastewater (WW) by complexation with natural polyphenols having radical scavenging activity, such as (3,4,5 tri-hydroxy-benzoic acid) gallic acid (GA) in alkaline pH (>7), under ambient O2 and temperature. Physicochemical and structural characteristics of GA-WW complex-forming are evaluated by UV/Vis spectroscopy. The comparative analysis among UV/Vis spectra of GA monomer, GA-GA polymer, WW compounds, and GA-WW complex reveals significant differences within 350–450 and 500–900 nm. According to attenuated total reflectance (ATR) spectroscopy and thermogravimetric analysis (TGA), these spectra differences correspond to distinct complexes formed. This study suggests a novel role of natural polyphenols on the degradation and humification of wastes.

AB - This study investigates the oxidation of municipal wastewater (WW) by complexation with natural polyphenols having radical scavenging activity, such as (3,4,5 tri-hydroxy-benzoic acid) gallic acid (GA) in alkaline pH (>7), under ambient O2 and temperature. Physicochemical and structural characteristics of GA-WW complex-forming are evaluated by UV/Vis spectroscopy. The comparative analysis among UV/Vis spectra of GA monomer, GA-GA polymer, WW compounds, and GA-WW complex reveals significant differences within 350–450 and 500–900 nm. According to attenuated total reflectance (ATR) spectroscopy and thermogravimetric analysis (TGA), these spectra differences correspond to distinct complexes formed. This study suggests a novel role of natural polyphenols on the degradation and humification of wastes.

KW - Complexation

KW - Free radicals

KW - Municipal wastewater

KW - Oxidation

KW - Polyphenols

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AN - SCOPUS:84997764967

SN - 0301-4797

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SP - 186

EP - 194

JO - Journal of Environmental Management

JF - Journal of Environmental Management

ER -

Oxidation of municipal wastewater by free radicals mechanism. A UV/Vis spectroscopy study

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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