Stability, biological treatment and UV photolysis of 18 bisphenols under laboratory conditions

Kovačić, Ana; Česen, Marjeta; Laimou‐Geraniou, Maria; Lambropoulou, Dimitra A.; Kosjek, Tina; Heath, David; Heath, Ester

doi:10.1016/j.envres.2019.108738

Cited by 37 publications

(20 citation statements)

References 45 publications

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“…In addition of these, advanced oxidation processes (AOPs) have been effectively used for the oxidation of BPA in wastewaters [20]. Techniques like photolysis [21] and ozonation [22], as well as hybrid processes like UV/H 2 O 2 [23], UV/O 3 [24], UV/TiO 2 [25], and O 2 /H 2 O 2 [26], have been successfully used for the oxidation of BPA. In this study, one of AOPs, CWPO, is studied for the removal of BPA from water.…”

Section: Introductionmentioning

confidence: 99%

Alkali-Activated Materials as Catalysts for Water Purification

Heponiemi

Pesonen

et al. 2021

Catalysts

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In this study, novel and cost-effective alkali-activated materials (AAMs) for catalytic applications were developed by using an industrial side stream, i.e., blast furnace slag (BFS). AAMs can be prepared from aluminosilicate precursors under mild conditions (room temperature using non-hazardous chemicals). AAMs were synthesized by mixing BFS and a 50 wt % sodium hydroxide (NaOH) solution at different BFS/NaOH ratios. The pastes were poured into molds, followed by consolidation at 20 or 60 °C. As the active metal, Fe was impregnated into the prepared AAMs by ion exchange. The prepared materials were examined as catalysts for the catalytic wet peroxide oxidation (CWPO) of a bisphenol A (BPA) aqueous solution. As-prepared AAMs exhibited a moderate surface area and mesoporous structure, and they exhibited moderate activity for the CWPO of BPA, while the iron ion-exchanged, BFS-based catalyst (Fe/BFS30-60) exhibited the maximum removal of BPA (50%) during 3 h of oxidation at pH 3.5 at 70 °C. Therefore, these new, inexpensive, AAM-based catalysts could be interesting alternatives for catalytic wastewater treatment applications.

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Section: Introductionmentioning

confidence: 99%

Alkali-Activated Materials as Catalysts for Water Purification

Heponiemi

Pesonen

et al. 2021

Catalysts

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“…Three of them (BPA-I10, 4CP and BPA-I11) were only detected in leachates of UV-irradiated coatings and were therefore assumed to be photolytic degradation products of BPA or the BPA based polymer. In aqueous solution, the degradation reaction of UV irradiated BPA followed a pseudo-first-order kinetic with a half-life time about 6 h ( Kovacic et al. 2019 ).…”

Section: Discussionmentioning

confidence: 99%

UV aged epoxy coatings ̶ Ecotoxicological effects and released compounds

et al. 2021

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Highlights UV-A irradiated epoxy coatings led to decreased ecotoxicological effects. UV-A irradiated epoxy coatings released toxic transformation products. 4- tert- Butylphenol was identified as main driver for ecotoxicological effects. BPA and structural analogs contribute to estrogenic effects of irradiated materials.

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“…The samples were then analyzed directly (see 2.4). The wastewater samples were prepared based on the method of Kovačič et al ( 2019a). Brie y, each sample (5 mL) was spiked with an internal standard mixture (25 µL: 10 µg mL −1 of BPA-d 16 and 13 C 12 -BPS) and acidi ed (pH=3) with 0.1 mL HCl aq (c = 0.12 M).…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

Degradation of Bisphenol A and S in Wastewater during Cold Atmospheric Pressure Plasma Treatment

Heath

Kovačić

Modić

et al. 2022

Preprint

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Developing novel, fast and efficient ecologically benign processes for removing organic contaminants is crucial for pawing the sustainable development in water treatments. For this reason, this study investigates the implementation of Cold Atmospheric pressure Plasma (CAP) generated in ambient air as an efficient agent for removal of Bisphenol A (BPA) and Bisphenol S (BPS)—known endocrine disrupting compounds in water and wastewater, by monitoring degradation kinetics and its transformation products. The highest removal efficiencies of BPA (>98%) and BPS (>70%) were obtained after 480 s of CAP exposure. A pseudo-first-order kinetic revealed that BPA (-kt = 0.0044 ̶ 0.0090 s−1) degrades faster than BPS (-kt = 0.0004 ̶ 0.0023 s−1) and that the degradation is also time- and CAP power-dependent, while the initial concentration or matrix type had a negligible effect. This study also tentatively identified three previously reported and one novel transformation product of BPA and four novel transformation products of BPS. Their postulated structures suggested similar breakdown mechanisms, i.e., hydroxylation followed by ring cleavage. The results demonstrate that CAP technology is as efficient or better in process duration and removal efficiency than other advanced oxidation processes but has the advantage of not requiring additional chemicals and needs a modest amount of electrical energy, making it a highly promising treatment for water and wastewater remediation.

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Stability, biological treatment and UV photolysis of 18 bisphenols under laboratory conditions

Cited by 37 publications

References 45 publications

Alkali-Activated Materials as Catalysts for Water Purification

Alkali-Activated Materials as Catalysts for Water Purification

UV aged epoxy coatings ̶ Ecotoxicological effects and released compounds

Degradation of Bisphenol A and S in Wastewater during Cold Atmospheric Pressure Plasma Treatment

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