Mechanism and Degradation Pathways of Bisphenol A in Aqueous Solution by Strong Ionization Discharge

Geng, Tingting; Yi, Chengwu; Yi, Rongjie; Liu, Yang; Nawaz, Muhammad Imran

doi:10.1007/s11270-020-04563-5

Cited by 18 publications

(4 citation statements)

References 43 publications

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“…These include chemical oxidation by peroxides, Fenton and Fenton-like processes (including photo-Fenton and electrochemical Fenton), ozone, photochemical processes (including solar light using TiO 2 as a photocatalyst), electrochemical processes, microwave processes, ultrasonic processes, ionizing radiation, hydrodynamic cavitation, and various combinations of these techniques . Carbonate is involved in these processes via the addition of percarbonate as an oxidizing agent, ,,− the involvement of the HCO 3 – /CO 3 2– that is always present in water, ,− and sometimes by the addition of HCO 3 – /CO 3 2– to the system …”

Section: Advanced Oxidation Processes/technologiesmentioning

confidence: 99%

The Role of Carbonate in Catalytic Oxidations

Mizrahi²,

2020

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Conspectus CO 2 , HCO 3 – , and CO 3 2– are present in all aqueous media at pH > 4 if no major effort is made to remove them. Usually the presence of CO 2 /HCO 3 – /CO 3 2– is either forgotten or considered only as a buffer or proton transfer catalyst. Results obtained in the last decades point out that carbonates are key participants in a variety of oxidation processes. This was first attributed to the formation of carbonate anion radicals via the reaction OH • + CO 3 2– → CO 3 •– + OH – . However, recent studies point out that the involvement of carbonates in oxidation processes is more fundamental. Thus, the presence of HCO 3 – /CO 3 2– changes the mechanisms of Fenton and Fenton-like reactions to yield CO 3 •– directly even at very low HCO 3 – /CO 3 2– concentrations. CO 3 •– is a considerably weaker oxidizing agent than the hydroxyl radical and therefore a considerably more selective oxidizing agent. This requires reconsideration of the sources of oxidative stress in biological systems and might explain the selective damage induced during oxidative stress. The lower oxidation potential of CO 3 •– probably also explains why not all pollutants are eliminated in many advanced oxidation technologies and requires rethinking of the optimal choice of the technologies applied. The role of percarbonate in Fenton-like processes and in advanced oxidation processes is discussed and has to be re-evaluated. Carbonate as a ligand stabilizes transition metal complexes in uncommon high oxidation states. These high-valent complexes are intermediates in electrochemical water oxidation processes that are of importance in the development of new water splitting technologies. HCO 3 – and CO 3 2– are also very good hole scavengers in photochemical processes of semiconductors and may thus become key participants in the development of new processes for solar energy conversion. In this Account, an attempt to correlate these observations with the properties of carbonates is made. Clearly, further studies are essential to fully uncover the potential of HCO 3 – /CO 3 2– in desired oxidation processes.

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Section: Advanced Oxidation Processes/technologiesmentioning

confidence: 99%

The Role of Carbonate in Catalytic Oxidations

Mizrahi²,

2020

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“…The degradation intermediates were analyzed by high‐performance gas chromatography‐mass spectrometer (GC–MS) 38 . The inlet temperature was set to 260°C, the flow rate was 1 mL/min; the carrier gas was nitrogen, and the injection volume was 1 μL.…”

Section: Methodsmentioning

confidence: 99%

“…The degradation intermediates were analyzed by high-performance gas chromatography-mass spectrometer (GC-MS). 38 The inlet temperature was set to 260 C, the flow rate was 1 mL/min; the carrier gas was nitrogen, and the injection volume was 1 μL. The column oven was maintained at 40 C for 3 min, ramped up to 100 C at 15 C/min and held for 2 min, then ramped up to 180 C at 15 C/min and held for 2 min, then ramped up to 240 C at 15 C/min and held for 2 min, last, ramped up to 280 C at 15 C/min and held for 2 min.…”

Section: Analysis Of Removal Mechanism and Intermediate Degradation P...mentioning

confidence: 99%

Study on copper oxide modified biochar for activating persulfate high efficiency and application for the removal of bisphenol A

Cheng

Wei

2023

Env Prog and Sustain Energy

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Advanced oxidation based on persulfate applied for the removal of organic pollutants has received widespread attention. Here, combining hydrothermal synthesis and a high‐temperature calcination approach, we constructed an effective copper oxide‐modified biochar from wood waste (Ginkgo biloba rods) for the removal of bisphenol A (BPA) from contaminated waterways. The modified biochar with copper oxide in its structure (CuO/BC) exhibited a densely arranged needle‐shaped structure different from pristine timber waste biochar (BC). CuO/BC can activate persulfate efficiently, and the removal rate of BPA could reach 100% within 20–30 min, approximately three times higher than that of BC. Moreover, CuO/BC was more suitable for treating BPA wastewater under alkaline conditions. The stability of CuO/BC, reaction intermediates, and possible degradation pathway were investigated. These results demonstrate the potential of the application of CuO/BC for organic wastewater treatment and shed light on a new approach to develop wastewater treatment materials that are carbon‐based and cost‐effective.

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“…Some studies have shown that strong ionization dielectric barrier discharge (SID) has a high removal effect on the refractory organic pollutants in sewage without the addition of reagents or catalysts. Such as pyridine (20mg/L, 96%) [9] and bisphenol A (20mg/L, 99.59%) [10], the degradation efficiency was higher than 95%. Therefore, in this experiment, the SID method was chosen to degrade NP in sewage, to determine the degradation efficiency of NP by SID method, and to explore the rule of toxicity change before and after NP degradation.…”

Section: Introductionmentioning

confidence: 99%

Effects of Degradation of Nonylphenol in Waste Water by Strong Ionization and Its Degradation Products on Sex Differentiation in Zebrafish

et al. 2021

Advances in Transdisciplinary Engineering

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Nonylphenol (NP), as a typical environmental endocrine disruptor, exists widely in the natural environment. It has a high toxicity with a low concentration. NP at the level of μg/L is enough to interfere with the sex differentiation of many aquatic organisms. The effects of degradation of NP in waste water by strong ionization (SID) and its degradation products on sex differentiation in zebrafish was studied in this paper. The NP solution of 5mg/L was degraded by SID device, and the 20d zebrafish were exposed to NP wastewater of different concentrations before and after degradation until their sexual maturity. The body length, body weight and sex differentiation ratio of zebrafish were recorded, and the sex hormone levels of zebrafish were extracted and detected. The gonadal glands of zebrafish were slices and analysed. This study found that the effects of nonylphenol on male zebrafish were much greater than that of female, and there was no significant positive correlation between toxicity and dose. In addition, the effects of 5mg/L NP wastewater degraded by SID for 60min were not significantly different from those of the control group, indicating that SID could effectively degrade NP and alleviate its biological toxicity.

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Mechanism and Degradation Pathways of Bisphenol A in Aqueous Solution by Strong Ionization Discharge

Cited by 18 publications

References 43 publications

The Role of Carbonate in Catalytic Oxidations

The Role of Carbonate in Catalytic Oxidations

Study on copper oxide modified biochar for activating persulfate high efficiency and application for the removal of bisphenol A

Effects of Degradation of Nonylphenol in Waste Water by Strong Ionization and Its Degradation Products on Sex Differentiation in Zebrafish

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