Positive and negative effects of recirculating aquaculture water advanced oxidation: O3 and O3/UV treatments improved water quality but increased antibiotic resistance genes

Xue, Wenqi; Zhang, Chongjun; Zhou, Dandan

doi:10.1016/j.watres.2023.119835

Cited by 28 publications

(4 citation statements)

References 82 publications

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“…This is mainly due to the following related reactions, R (11)- (15), in solution [51][52][53]: hypothesis that the decrease in electron density is associated with electron consumption, leading to the generation of more active species. Several studies have reported that H2O2, O3, and, • OH are the main active species in the degradation process of ammonia nitrogen wastewater [21,[48][49][50]. Figure 8b demonstrates the effect of the applied voltage on the concentrations of these three active species in the liquid phase.…”

Section: Gas-liquid Discharge Plasma Active Speciesmentioning

confidence: 96%

Ammonia Nitrogen Removal by Gas–Liquid Discharge Plasma: Investigating the Voltage Effect and Plasma Action Mechanisms

Zheng,

Chang,

Liang

et al. 2023

Water

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Atmospheric pressure gas–liquid discharge plasma has garnered considerable attention for its efficacy in wastewater contaminant removal. This study utilized atmospheric oxygen gas–liquid discharge plasma for the treatment of ammonia nitrogen wastewater. The effect of applied voltage on the treatment of ammonia nitrogen wastewater by gas–liquid discharge plasma was discussed, and the potential reaction mechanism was elucidated. As the applied voltage increased from 9 kV to 17 kV, the ammonia nitrogen removal efficiency rose from 49.45% to 99.04%, with an N2 selectivity of 87.72%. The mechanism of ammonia nitrogen degradation by gas–liquid discharge plasma under different applied voltages was deduced through electrical characteristic analysis, emission spectrum diagnosis, and further measurement of the concentration of active species in the gas–liquid two-phase system. The degradation of ammonia nitrogen by gas–liquid discharge plasma primarily relies on the generation of active species in the liquid phase after plasma–gas interactions, rather than direct plasma effects. Increasing the applied voltage leads to changes in discharge morphology, higher energy input, elevated electron excitation temperatures, enhanced collisions, a decrease in plasma electron density, and an increase in rotational temperatures. The change in the plasma state enhances the gas–liquid transfer process and increases the concentration of H2O2, O3, and, ⋅OH in the liquid phase. Ultimately, the efficient removal of ammonia nitrogen from wastewater is achieved.

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Section: Gas-liquid Discharge Plasma Active Speciesmentioning

confidence: 96%

Ammonia Nitrogen Removal by Gas–Liquid Discharge Plasma: Investigating the Voltage Effect and Plasma Action Mechanisms

Zheng,

Chang,

Liang

et al. 2023

Water

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“…In the existing Advanced oxidation processes (AOPs), reactive oxygen radicals were obtained by activating H2O2, O3, PMS and PDS in various ways (e.g., UV, transition metals and electrocatalysis) [9][10][11][12][13][14][15][16][17][18]. Sodium percarbonate (SPC, Na2CO3•1.5H2O2) similar to the above materials is known as solid H2O2 with better stability and longer storage time compared to liquid H2O2.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Anthraquinone Dye Wastewater by Sodium Percarbonate with CoO Heterogeneous Activation

Fan,

Xia,

Sun

et al. 2024

Preprint

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In this work, the optimal efficiency and mechanism of action of CoO activated sodium percarbonate (SPC) for the degradation of Reactive Blue 19 was investigated. The three-factor interaction of SPC concentration, CoO dosage and initial pH and the effects of factors such as anions and humic acids (HA) were investigated. The results show that the CoO/SPC system (93.8%, 0.01015 min− 1) efficiently degraded RB19 and was also suitable for other organic dyes (32.7%~100%) and antibiotics (97.1%~100%). During the activation of SPC by CoO, carbonate radical (CO3•−), hydroxyl radical (•OH), superoxide radical (O2•−) and singlet oxygen (1O2) are involved in the degradation process, among which CO3•− (88.2%) plays an indispensable role, which was proved by quenching experiments and electron paramagnetic resonance (EPR) tests. Co2+ dissolution was lower than 150 µg/L, which meets the emission standard (1 ppm); the application of SPC avoids the problem of acidification of the wastewater, and the final product is green in color. This study presents a novel approach to treating dye wastewater by combining transition metal oxides with sodium percarbonate.

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“…UV, transition metals and electrocatalysis). [9][10][11][12][13][14][15][16][17][18] The activation of 4 mmol L −1 PMS with 100 mg FeCo 2 O 4 degraded 95.8% of 2,4-Dichlorophenol in 90 min. 19 PMS and PDS are simple and efficient in treating this type of wastewater, but have not been popularized because the problem of acidification of the effluent cannot be solved effectively.…”

Section: Introductionmentioning

confidence: 99%

“…In the existing advanced oxidation processes (AOPs), activated oxygen radicals are obtained by activating

{normalH}_{2} {normalO}_{2}

{normalO}_{3}

, PMS and PDS in various ways (e.g. UV, transition metals and electrocatalysis) 9‐18 . The activation of 4 mmol L −1 PMS with 100 mg

{FeCo}_{2} {normalO}_{4}

degraded 95.8% of 2,4‐Dichlorophenol in 90 min 19 .…”

Section: Introductionmentioning

confidence: 99%

Degradation of Anthraquinone dye wastewater by sodium percarbonate with CoO heterogeneous activation

Fan,

Xia,

Sun

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDAnthraquinone dyes have an anthraquinone structure as their nucleus, with one or more substituents forming different organic dyes. Anthraquinone dyes have a complex structure that allows them to exist stably in water environment, but also makes them more toxic than azo dyes. This results in varying degrees of harm to both humans and the environment as a result of residual dyes in the water or on the material’ surface. Sodium percarbonate (SPC) is a highly promising oxidant due to its green end product. Therefore, in this study, the catalytic performance and kinetic study of cobalt oxide (CoO) on SPC under different conditions were systematically investigated using RB19 as the target pollutant. The Box–Behnken Design (BBD) model was used to model the degradation of RB19 by CoO/SPC system, which gives the basis for practical application. The types of reactive oxygen species that effectively degrade RB19 and the potential degradation mechanism of the CoO/SPC system were revealed. At the same time, the CoO/SPC system was evaluated in terms of its practicality.RESULTSIn this work, the activation of SPC using CoO towards reactive blue 19 (RB19) degradation was explored. Experimental results showed that nearly 93.8% of RB19 could be removed within 30 min using 1 mmol L−1 SPC and 30 mg L−1 CoO. The three‐factor interaction effects of SPC concentration, CoO dosage and initial pH were investigated. The BBD model was set up to obtain the optimum working conditions of 1.039 mmol L−1 SPC, 33.35 mg L−1 CoO and the initial pH of 7.82, which gave a degradation rate of 95.372%. Additionally, it was confirmed that the solubility of Co2+ is consistently <150 μg L−1, meeting the emission standard (1 ppm). The presence of Cl−, NO3–, and HA had a similar profile, with a slight promoting effect in small amounts and an inhibitory effect when introduced in excess. The introduction of SO42– had a negligible effect on RB19 degradation, whereas the presence of HCO3− produced a slight inhibitory effect. Furthermore, the presence of PO43– showed a strong inhibitory effect. The CoO/SPC system is suitable for other organic dyes (32.7%–100%) and antibiotics (97.1–100%). Electron paramagnetic resonance (EPR) analysis and quenching experiments confirmed the presence and relative contribution of free radicals in the CoO/SPC system as CO3•‐ (88.12%) >O2•‐ (51.11%) >1O2 (37.21%) >•OH (5.27%) > SPC (3.33%) >CoO (0.09%). It has been confirmed that CoO activates SPC through electron transfer.CONCLUSIONThe present study describes a less time‐consuming, and more efficient method of treating anthraquinone dye wastewater that requires less oxidizer and catalyst, making it more economical. This proposes a straightforward, cost‐effective and efficient technique using SPC triggered by transition metal oxides. © 2024 Society of Chemical Industry (SCI).

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Positive and negative effects of recirculating aquaculture water advanced oxidation: O3 and O3/UV treatments improved water quality but increased antibiotic resistance genes

Cited by 28 publications

References 82 publications

Ammonia Nitrogen Removal by Gas–Liquid Discharge Plasma: Investigating the Voltage Effect and Plasma Action Mechanisms

Ammonia Nitrogen Removal by Gas–Liquid Discharge Plasma: Investigating the Voltage Effect and Plasma Action Mechanisms

Degradation of Anthraquinone Dye Wastewater by Sodium Percarbonate with CoO Heterogeneous Activation

Degradation of Anthraquinone dye wastewater by sodium percarbonate with CoO heterogeneous activation

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