Mineralization of Trace Nitro/Chloro/Methyl/Amino-Aromatic Contaminants in Wastewaters by Advanced Oxidation Processes

Huang, Wenjuan; Ji, Yuanhui; Yang, Zhuhong; Feng, Xin; Liu, Chang; Zhu, Yinhua; Lü, Xiaohua

doi:10.1021/ie100116c

Cited by 6 publications

(2 citation statements)

References 59 publications

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“…The electron-withdrawing effect of Cr(CO) 3 ( 6 -Ph) was stronger than that of Ph, proving that Cr(CO) 3 coordinated to ferrocenylbenzene could reduce the electron density of the benzene ring and then decrease the magnetic anisotropy shifting the benzene ring in 2 upfield compared to 1. Electron-donating groups (amino group) on benzene could increase the electron density of the benzene ring [21]. It is clear from our results that the oxidation of the ferrocenyl unit would shift to lower potential compared with 1.…”

Section: Crystal Structures Of 1 Andmentioning

confidence: 71%

Detecting the electron density of benzene using ferrocene as an indicator

Liu

Zhu

Han

et al. 2012

Journal of Coordination Chemistry

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Section: Crystal Structures Of 1 Andmentioning

confidence: 71%

Detecting the electron density of benzene using ferrocene as an indicator

Liu

Zhu

Han

et al. 2012

Journal of Coordination Chemistry

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“…4 They are very important pollutants; even at low concentrations they can affect water sources by imparting undesirable colour which reduces the light penetration through the water column. 5 Therefore, studies on the decolourisation and detoxication of azo dye effluents have received increasing attention. Orange G (Fig.…”

Section: Introductionmentioning

confidence: 99%

Titanium aminophosphates: synthesis, characterization and orange G dye degradation studies

Anumula

Nookaraju²,

Chirra

et al. 2015

RSC Adv.

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Theoretical limiting concentration for mineralization of trichloromethane and dichloromethane in aqueous solutions by AOPs

Huang

Lü

et al. 2011

Sci. China Chem.

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It is widely stated that most organic contaminants could be completely mineralized by Advanced Oxidation Processes (AOPs). This statement means that the concentration of the organic contaminant at equilibrium (limiting concentration, LC) is low enough to be neglected. However, for environmental safety, especially drinking water safety, this statement needs to be verified from chemical engineering thermodynamic analysis. In this paper, trichloromethane (CHCl 3 ) and dichloromethane (CH 2 Cl 2 ) are selected as the model systems, and the equilibrium concentration (theoretical limiting concentration, TLC) for the mineralization of chlorinated methanes in aqueous solutions at the different initial concentrations of chlorinated methanes, pH values and ·OH concentrations by AOPs are investigated by thermodynamic analysis. The results in this paper show that the TLC for the mineralization of CHCl 3 and CH 2 Cl 2 with ·OH increases with increasing initial concentrations of CHCl 3 and CH 2 Cl 2 , decreases with increasing concentration of ·OH, and the TLC for the mineralization of CHCl 3 decreases with increasing pH values except that the pH value changes from 3.0 to 3.5. For the mineralization of CH 2 Cl 2 with ·OH, at the concentrations of ·OH obtained from the literature, there is no obvious change of the TLC with pH values, while as the concentrations of ·OH increase by 10 and 100 times, the TLC decreases with the increasing pH values from 2.0 to 3.0 and from 3.5 to 4.5, and increases with the increasing pH values from 3.0 to 3.5 and from 4.5 to 5.0. The investigations in this paper imply that high concentration of ·OH, a bit higher pH values (4.0-5.0) in acid environment and low initial concentrations of the organic contaminants are beneficial for the complete mineralization of chlorinated methanes by AOPs. thermodynamic analysis, chemical equilibrium, theoretical limiting concentration, organic contaminant mineralization degree, advanced oxidation processes, chlorinated methane

show abstract

Mineralization of Trace Nitro/Chloro/Methyl/Amino-Aromatic Contaminants in Wastewaters by Advanced Oxidation Processes

Cited by 6 publications

References 59 publications

Detecting the electron density of benzene using ferrocene as an indicator

Detecting the electron density of benzene using ferrocene as an indicator

Titanium aminophosphates: synthesis, characterization and orange G dye degradation studies

Theoretical limiting concentration for mineralization of trichloromethane and dichloromethane in aqueous solutions by AOPs

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