Degradation of 2,4,6-trichlorophenol in aqueous systems through the association of zero-valent-copper-mediated reduction and UVC/H2O2: effect of water matrix and toxicity assessment

Souza, Larissa Pinheiro de; Graça, Cátia A.L.; Teixeira, Antônio Carlos Silva Costa; Chiavone‐Filho, Osvaldo

doi:10.1007/s11356-020-11885-8

Cited by 8 publications

(4 citation statements)

References 24 publications

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“…The effective role of copper-based catalysis in hydrodechlorination (HDC) processes applicable for wastes contaminated with low concentrations of polychlorinated pollutants has been described [142][143][144][145][146][147][148][149][150][151][152][153][154][155][156][157][158].…”

Section: Cu-based Hydrodehalogenation Of Aromatic Compoundsmentioning

confidence: 99%

The Influence of Copper on Halogenation/Dehalogenation Reactions of Aromatic Compounds and Its Role in the Destruction of Polyhalogenated Aromatic Contaminants

Weidlich

2021

Catalysts

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The effect of copper and its compounds on halogenation and dehalogenation of aromatic compounds will be discussed in the proposed article. Cu oxidized to appropriate halides is an effective halogenation catalyst not only for the synthesis of halogenated benzenes or their derivatives as desired organic fine chemicals, but is also an effective catalyst for the undesirable formation of thermodynamically stable and very toxic polychlorinated and polybrominated aromatic compounds such as polychlorinated biphenyls, dibenzo-p-dioxins and dibenzofurans accompanied incineration of waste contaminated with halogenated compounds or even inorganic halides. With appropriate change in reaction conditions, copper and its alloys or oxides are also able to effectively catalyze dehalogenation reactions, as will be presented in this review.

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Section: Cu-based Hydrodehalogenation Of Aromatic Compoundsmentioning

confidence: 99%

The Influence of Copper on Halogenation/Dehalogenation Reactions of Aromatic Compounds and Its Role in the Destruction of Polyhalogenated Aromatic Contaminants

Weidlich

2021

Catalysts

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“…Combined chlorine exists as monochloramine, dichloramine, nitrogen trichloride, etc. Chlorine and chlorine compounds influence formation of harmful secondary products which pose risks to aquatic environment [22][23][24][25][26]. Studies present impact of residual chlorine on various water microorganism remain up to 14 days and even low concentration of chlorine with continuous impact could affect water ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Residual Chlorine Removal from Stormwater

Valentukeviciene,

Andriulaityte,

Zurauskiene

et al. 2024

Preprint

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In recent decade water pollution by micropollutants is an increasing environmental concern. Since 2019, due to COVID-19 pandemic, increased stormwater pollution by chlorine based disinfectants has been determined. Research aimed to treat of chlorine contaminated stormwater after outdoors spaces disinfection are very limited. Runoff from disinfected areas and residual chlorine present in stormwater are transported to surface water bodies. Residual chlorine reacts with dissolved organic compounds in water and results the formation of environmentally toxic disinfection by-products. Studies present event low residual chlorine concentrations may pose a risk to aquatic flora and fauna. In this study the efficiency of different filter materials, including peat, wood chips, sawdust (column tests) and ceramzites Leca, Pollytag, Polski, Ceski (batch tests), in retaining residual chlorine were tested in laboratory scale batch and flow through experiment. The best efficiency to retain chlorine presented sawdust (96 %) and ceramzite Leca (76 %). The plants abilities to reduce pollution by chlorine was analyzed in raised garden bed. Research results will contribute to future studies aimed to retain various micropollutants in stormwater using remediation technologies.

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“…There has been an increasing concern towards the adverse effects of chlorophenols towards environmental damage and human health (Mukherjee et al 2022). CPs are categorised in the priority toxic pollutants listed by USEPA (ASTDR, 2007), and have the ability to bioaccumulate in organisms (de Souza et al 2021). The toxicity of chlorophenols increases with increase in the number of chlorine atoms present at the ortho-and para-position and are more stable than chlorine present at meta-position.…”

Section: Introductionmentioning

confidence: 99%

Degussa P-25 TiO2 induced Photocatalytic Oxidation of 2,4,6-Trichlorophenol

Yadav

Kumar

Haritash

2022

Preprint

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Chlorophenols have significant environmental concern owing to their toxicity, carcinogenicity and bioaccumulation potential, especially in the aquatic environment. Inefficient treatment of industrial effluents and discharge of partially treated wastewater further aggravates the environmental and health issues. Degradation of 2,4,6-Trichlorophenol using photochemical oxidation (TiO2) has come up as a potential treatment option. The present study used Degussa P-25 nano-TiO2 at varying doses for the optimisation of treatment. An optimised dose of 250mg/l TiO2could remove 2,4,6-Trichlorophenol completely wi thin 210 minutes of reaction period. Addition of H2O2 to further increase the rates of treatment did not yield any benefit. It was observed that UV365exposure may be replaced by solar light but the reaction rate was lower compared to UV. Finally, the comparison of operational cost of UV photocatalysis, photo catalysis with H2O2, and solar photocatalysis revealed the cost of US $ 0.27 per litre, 0.30 per litre, and 0.16 per litre, respectively, thus making solar photocatalysis the best option, but for lower volumes of wastewater. It was concluded that photocatalytic oxidation can be a sustainable treatment option for degradation of 2,4,6-TCP considering its benefits to environment and health.

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Degradation of 2,4,6-trichlorophenol in aqueous systems through the association of zero-valent-copper-mediated reduction and UVC/H2O2: effect of water matrix and toxicity assessment

Cited by 8 publications

References 24 publications

The Influence of Copper on Halogenation/Dehalogenation Reactions of Aromatic Compounds and Its Role in the Destruction of Polyhalogenated Aromatic Contaminants

The Influence of Copper on Halogenation/Dehalogenation Reactions of Aromatic Compounds and Its Role in the Destruction of Polyhalogenated Aromatic Contaminants

Experimental Research on Residual Chlorine Removal from Stormwater

Degussa P-25 TiO2 induced Photocatalytic Oxidation of 2,4,6-Trichlorophenol

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