Enhanced photoelectrocatalytic degradation of bisphenol A and simultaneous production of hydrogen peroxide in saline wastewater treatment

Xiao, Ke; Liang, Huiyu; Chen, Siyuan; Yang, Bo; Zhang, Junmin; Li, Juying

doi:10.1016/j.chemosphere.2019.01.109

Cited by 27 publications

(7 citation statements)

References 55 publications

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“…These results are compared in Table S1. WO 3 is an environmentally abundant material that has good electrical conductivity and an easily controllable chemical composition [34] and is widely used in fuel cells [35,36] supercapacitors [37,38] gas sensors [39] and photocatalysis [40]. Stoichoimetric WO 3 is a n-type semiconductor with bandgap of 2.5-2.8 eV that can absorb visible light [41].…”

Section: Introductionmentioning

confidence: 99%

Direct Z-scheme WO3- nanowire-bridged TiO2 nanorod arrays for highly efficient photoelectrochemical overall water splitting

Lin

Ren

et al. 2021

Journal of Energy Chemistry

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Section: Introductionmentioning

confidence: 99%

Direct Z-scheme WO3- nanowire-bridged TiO2 nanorod arrays for highly efficient photoelectrochemical overall water splitting

Lin

Ren

et al. 2021

Journal of Energy Chemistry

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“…Conventional biological (Zielin'ska et al, 2016;Ferro Orozco et al, 2013;Schröder, 2006) as well as physical-chemical treatment techniques (Bhatnagar and Anastopoulos, 2016) cannot satisfactorily remove BPA from water as well as reduce the biological toxicity. In order to conquer the limitations of conventional processes, a lot of AOPs have been developed, such as ozonation (Ahmad et al, 2015), photocatalysis (Reddy et al, 2018;Gao et al, 2020;Li et al, 2022;Luo et al, 2022), photoelectrocatalysis (He et al, 2017), Fenton/photo-Fenton (Xiao et al, 2019) and persulfates or sulfite based oxidation (Wu et al, 2018(Wu et al, , 2021(Wu et al, , 2022. However, due to the stability and catalytic efficiency of catalysts, photocatalytic oxidation was often restricted in application.…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, most studies have focused on the removal of BPA itself, researches involving the change and control effect of biological toxicity were still relatively insufficient. However, researches have found that more toxic intermediates might be generated during BPA degradation process (Reddy et al, 2018;He et al, 2017;Xiao et al, 2019), which further increased the biological toxicity of the treated wastewater. On the one hand, if the biological toxicity index was ignored, it would be unfavorable for the effective operations of the subsequent biological treatment process.…”

Section: Introductionmentioning

confidence: 99%

Performance of ozonation on bisphenol a degradation: Efficiency, mechanism and toxicity control

Han

Dong

Wang

et al. 2022

Front. Environ. Sci.

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In this study, the degradation of bisphenol A (BPA) by ozonation was studied systematically by investigating the effects of different factors, including ozone dosages (0.25-1.50 mg/L), temperatures (10-50 °C), initial solution pH (3.0-11.0) and interfering ions. The reaction kinetics were analyzed at the same time. In addition, the generation of intermediates was analyzed and the possible mechanism was proposed by combining with the density functional theory (DFT) calculation. At last, the variation and controlling effect of toxicity was also evaluated. The results showed that ozonation had a stronger degrading ability of BPA (1.0 mg/L). A complete removal efficiency was obtained within 10 min when dosing only 1.0 mg/L ozone. The BPA degradation reactions were well fitted with pseudo-second-order kinetics and could well adapt with the wide range of pH (3.0-9.0), during which over 91% removal of BPA was achieved. The indirect pathway by •OH oxidation was proved mainly responsible for BPA degradation by the scavenging and electron paramagnetic resonance experiments. HCO 3 − , NH 4 + and humic acid showed a certain inhibiting effect. Fe 3+ and Cu 2+ played a catalytic role on BPA degradation. The DFT calculation has identified that the active regions of BPA was focused at C6, C4, C5 and C1 in terms of radical and electrophilic attack. Thus, combining the results of DFT with GC/ MS-MS detection, two degradation pathways of BPA were proposed. Toxicity evaluation showed that, due to the generation and accumulation of more toxic intermediates, values of T% had a sharp increase at initial stage. However, with ozone dosage increasing to 1.50 mg/L, the toxicity could be effectively controlled much lower (5%) than BPA itself (49%).

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“…H 2 O 2 has been photoelectrochemically produced by O 2 reduction in a photocatalytic fuel cell (PFC) [11][12][13][14][15][16][17][18][19][20]. The device employed is schematically illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

UV/H2O2 degradation of diclofenac in a photocatalytic fuel cell

Dhawle

Mantzavinos

Lianos

2021

Applied Catalysis B: Environmental

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The purpose of this work was to construct an integrated reactor which could photoelectrocatalytically generate hydrogen peroxide under solar radiation and simultaneously degrade a recalcitrant pollutant by the UV/H 2 O 2 process. Diclofenac has been chosen as water soluble model pollutant. Hydrogen peroxide has been produced by atmospheric oxygen reduction in a photocatalytic fuel cell. The cell comprised a transparent photoanode electrode bearing a combined CdS/TiO 2 photocatalyst and a carbon cloth cathode bearing nanoparticulate carbon without any other electrocatalyst. Diclofenac was dissolved in the cathode compartment where hydrogen peroxide was generated and the pollutant was degraded by UV radiation support. Degradation was monitored by UV-Vis spectrophotometry and by high performance liquid chromatography. The results show that an integrated reactor functionality is realistic and effective and it provides an alternative route for sustainable operation aiming at environmental remediation.

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Enhanced photoelectrocatalytic degradation of bisphenol A and simultaneous production of hydrogen peroxide in saline wastewater treatment

Cited by 27 publications

References 55 publications

Direct Z-scheme WO3- nanowire-bridged TiO2 nanorod arrays for highly efficient photoelectrochemical overall water splitting

Direct Z-scheme WO3- nanowire-bridged TiO2 nanorod arrays for highly efficient photoelectrochemical overall water splitting

Performance of ozonation on bisphenol a degradation: Efficiency, mechanism and toxicity control

UV/H2O2 degradation of diclofenac in a photocatalytic fuel cell

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