Unveiling microbial degradation of triclosan: Degradation mechanism, pathways, and catalyzing clean energy

Nandikes, Gopa; Pathak, Pankaj; Singh, Lakhveer

doi:10.1016/j.chemosphere.2024.142053

Chemosphere

2024

DOI: 10.1016/j.chemosphere.2024.142053

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Unveiling microbial degradation of triclosan: Degradation mechanism, pathways, and catalyzing clean energy

Gopa Nandikes,

Pankaj Pathak,

Lakhveer Singh

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2024

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Cited by 2 publications

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Treatability of diclofenac and triclosan solutions by catalytic and photocatalytic oxidation processes

Topkaya,

Arslan

2024

J of Chemical Tech & Biotech

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BACKGROUNDIn recent years, advanced oxidation processes (AOP) have gained importance as highly effective methods in the treatment of organic substances with toxic and permanent properties. Diclofenac (DCF) and Triclosan (TCS) pollutants, which are from the endocrine disrupting chemicals (EDCs) that were encountered in various aquatic environments such as inlet and outlet waters of treatment plants, surface waters, drinking water, groundwater and sediments were reported in the literature. In this study, mineralisation of DCF and TCS pollutants, which were the EDCs, were investigated by AOPs. The applied processes were O3, O3/UV, O3/ZnO, UV/ZnO, and O3/UV/ZnO. The studies were carried out at two different initial concentrations (5 and 10 mg/L), at 5 ppm ozone dose, 2 × 8 W UVC light, 0.1 g ZnO, in the original pH, and 30 min reaction time.RESULTSThe highest COD and TOC removal efficiencies were determined in O3/UV/ZnO process as 82% COD, 71% TOC at 5 mg/L concentration for DCF pollutant and as 72% COD, 75% TOC at 10 mg/L concentration for TCS pollutant. For these process conditions, the ozone consumptions were determined 0.13 mgO3/mgCODremoved, 0.31 mgO3/mgTOCremoved and 0.69 mgO3/mgCODremoved, 0.98 mgO3/mgTOCremoved, respectively. The electrical energy per order values were found in the range of 12.33–20.88 kWh/m3 for O3/UV/ZnO processes. Treatment costs of these processes were calculated in the range of 0.002 to 44.823 €/m3.CONCLUSIONFor the treatability of DCF and TCS pollutants, ozone‐based advanced oxidation processes, especially O3/UV/ZnO photocatalytic ozone oxidation process were determined as a feasible process. © 2024 Society of Chemical Industry (SCI).

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Treatability of diclofenac and triclosan solutions by catalytic and photocatalytic oxidation processes

Topkaya,

Arslan

2024

J of Chemical Tech & Biotech

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Self-assembly of ZnO-Biochar/Kaolinite/Chitosan/GO with 1D/2D/3D heterojunctions for enhanced removal of estrogens and triclosan in water

Bayode,

Akpotu,

Omorogie

et al. 2024

BMC Chemistry

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This Study focuses on the preparation of sustainable and efficient Chitosan catalyst for the removal of three organic pollutants, 17β-Estradiol (E2), 17α-ethynyl estradiol (EE2) and triclosan (TCS) from water. The prepared nanocomposites were characterized by different techniques which confirmed the presence of the key components Chitosan, Carica Papaya seed and Kaolinite. The optical characterization proved the nanocomposite is photoactive with a band gap of 1.81 eV and 1.77 eV for Chitosan/kaolinite biochar (CS/KBC) and Chitosan/kaolinite biochar/GO (CS/KBC/GO) respectively, confirming the ability of the nanocomposite to be active in the visible light region of the spectrum. The degradation experiment using CS/KBC/GO was observed better with 100% removal for 5 mg/L E2 and EE2 over 60 min and 97.8% over 120 min for 10 mg/L TCS at optimum conditions (pH 3 for E2, and EE2 and pH 7). It was observed that the superoxide radical played a major role in the degradation of the contaminants. Furthermore, the CS/KBC/GO was efficient over four cycles without any decrease in performance, which rules out the question of catalyst deactivation proving the sustainability of the catalyst. The toxicity test shows that the water is safe as it does not harm cerio daphnia silvestrii organism.; CS/KBC/GO efficiently removed the micropollutants from real-life waste samples and the performance was very good with a slight decrease in performance for the wastewater due to the complex matrix of the water sample that competes for the active site.

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Unveiling microbial degradation of triclosan: Degradation mechanism, pathways, and catalyzing clean energy

Cited by 2 publications

References 65 publications

Treatability of diclofenac and triclosan solutions by catalytic and photocatalytic oxidation processes

Treatability of diclofenac and triclosan solutions by catalytic and photocatalytic oxidation processes

Self-assembly of ZnO-Biochar/Kaolinite/Chitosan/GO with 1D/2D/3D heterojunctions for enhanced removal of estrogens and triclosan in water

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