Mechanochemical degradation treatment of TBBPA: A kinetic approach for predicting the degradation rate constant

Takaya, Yutaro; Xiao, Yuanhua; Tsunazawa, Yuki; Cordova, Mauricio; Tokoro, Chiharu

doi:10.1016/j.apt.2022.103469

Cited by 8 publications

(3 citation statements)

References 44 publications

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“…TBBPA is categorized as one of the persistent organic pollutants, characterized by its resilient molecular structure that makes natural degradation challenging. 5 Furthermore, the incomplete degradation of TBBPA often gives rise to hazardous halogenated by-products, like bromophenol, which pose risks to both the environment and human health. 6,7 As a result, there is a pressing need to devise comprehensive methods for the complete degradation of TBBPA.…”

Section: Introductionmentioning

confidence: 99%

Structure induced activity enhancement of tungsten oxide for tetrabromobisphenol A photodegradation under visible light illumination

Zhou,

Zhu,

et al. 2024

New J. Chem.

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Section: Introductionmentioning

confidence: 99%

Structure induced activity enhancement of tungsten oxide for tetrabromobisphenol A photodegradation under visible light illumination

Zhou,

Zhu,

et al. 2024

New J. Chem.

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“…Due to its persistence and complex natural degradation, the removal of TBBPA requires advanced technologies. Thus, research on chemical, physical, and biological treatments has been pursued (Okeke et al, 2022; Takaya et al, 2022; Weng et al, 2021). However, their effectiveness in mitigating ecotoxicity remains uncertain.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic treatment removing tetrabromobisphenol A and biota safety: How do tropical aquatic species respond to effluent toxicity over short‐ and long‐term exposures?

Bernegossi,

Castro,

Felipe

et al. 2024

Water Environment Research

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Wastewater containing tetrabromobisphenol A (TBBPA), a commonly used flame retardant found in wastewater, can present significant toxic effects on biota, yet its impact on tropical freshwater environments is not well understood. This study explores the effectiveness of two independent anaerobic treatment systems, the acidogenic reactor (AR) and the methanogenic reactor (MR), for the ecotoxicity reduction of TBBPA‐rich wastewater in four tropical freshwater species. Despite presenting good physicochemical performance and reduced toxicity of the influent for most species, AR and MR treatments remain acute and chronic toxicity. Overall, MR exhibited greater efficacy in reducing influent toxicity compared with AR. TBBPA bioaccumulation was observed in Chironomus sancticaroli after short‐term exposure to 100% MR effluent. Multigenerational exposures highlighted changes in the wing length of C. sancticaroli, showing decreases after influent and AR exposures and increases after MR exposures. These findings underscore the need for ecotoxicological tools in studies of new treatment technologies, combining the removal of emerging contaminants with safeguarding aquatic biota.Practitioner Points Acidogenic and methanogenic reactors reduced the acute and chronic toxicity of wastewater containing tetrabromobisphenol A. Both treatments still exhibit toxicity, inducing short‐ and long‐term toxic effects on four native tropical species. The aquatic species Pristina longiseta was most sensitive to effluents from acidogenic and methanogenic reactors. TBBPA concentrations recovered from Chironomus sancticaroli bioaccumulation analysis ranged from 1.07 to 1.35 μg g−1. Evaluating new treatment technologies with multiple species bioassays is essential for a comprehensive effluent toxicity assessment and ensuring aquatic safety.

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“…Other studies were focused on debromination processes based on the thermal decomposition of the materials [ 18 , 19 ]. Interesting studies on the debromination of different materials by mechanochemical degradation are also in the literature [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Debromination of Waste Circuit Boards by Reaction in Solid and Liquid Phases: Phenomenological Behavior and Kinetics

et al. 2023

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The debromination of waste circuit boards (WCBs) used in computer motherboards and components has been studied with two different pieces of equipment. Firstly, the reaction of small particles (around one millimeter in diameter) and larger pieces obtained from WCBs was carried out with several solutions of K2CO3 in small non-stirred batch reactors at 200–225 °C. The kinetics of this heterogeneous reaction has been studied considering both the mass transfer and chemical reaction steps, concluding that the chemical step is much slower than diffusion. Additionally, similar WCBs were debrominated using a planetary ball mill and solid reactants, namely calcined CaO, marble sludge, and calcined marble sludge. A kinetic model has been applied to this reaction, finding that an exponential model is able to explain the results quite satisfactorily. The activity of the marble sludge is about 13% of that of pure CaO and is increased to 29% when slightly calcinating its calcite at only 800 °C for 2 h.

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Mechanochemical degradation treatment of TBBPA: A kinetic approach for predicting the degradation rate constant

Cited by 8 publications

References 44 publications

Structure induced activity enhancement of tungsten oxide for tetrabromobisphenol A photodegradation under visible light illumination

Structure induced activity enhancement of tungsten oxide for tetrabromobisphenol A photodegradation under visible light illumination

Anaerobic treatment removing tetrabromobisphenol A and biota safety: How do tropical aquatic species respond to effluent toxicity over short‐ and long‐term exposures?

Debromination of Waste Circuit Boards by Reaction in Solid and Liquid Phases: Phenomenological Behavior and Kinetics

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