Improved degradation of anthraquinone dye by electrochemical activation of PDS

Li, Xue; Tang, Shoufeng; Yuan, Deling; Tang, Jie; Zhang, Chen; Li, Na; Rao, Yandi

doi:10.1016/j.ecoenv.2019.04.015

Cited by 85 publications

(16 citation statements)

References 67 publications

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“…Overall, both PDS and PMS have been widely applied, owing to their excellent water solubility, low cost, ease of storage, and low environmental impact (Xiao et al, 2020). Traditionally, PS refers to PDS, including Na 2 S 2 O 8 , K 2 S 2 O 8 , and (NH 4 ) 2 S 2 O 8 (Tsitonaki et al, 2010;Li et al, 2019b). Among them, Na 2 S 2 O 8 has been frequently applied because of its lower cost, stable chemical characteristics, and ease of solubility.…”

Section: Properties Of Pms and Psmentioning

confidence: 99%

“…The proportion of PS/PMS in the oxidation system was also essential to pollutant degradation because the excess quality of PS can induce a reverse reaction, whereas the insufficient amount induces a low removal rate. The work of Li et al (2019b) found that the increasing dosage of PS from 1 to 10 mmol/L accelerated the decolorization of reactive brilliant blue (RBB) from 50.42 to 93.75%; however, the excess PS consumed the generated SO − 4 •, via the following reactions (detailed in Equations 37-38), and led to a significant declining of the overall removal rate of RBB.…”

Section: Performance Of Ps/pms Oxidationmentioning

confidence: 99%

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A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

et al. 2020

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High levels of toxic organic pollutants commonly detected during domestic/industrial wastewater treatment have been attracting research attention globally because they seriously threaten human health. Sulfate-radical-based advanced oxidation processes (SR-AOPs) have been successfully used in wastewater treatment, such as that containing antibiotics, pesticides, and persistent organic pollutants, for refractory contaminant degradation. This review summarizes activation methods, including physical, chemical, and other coupling approaches, for efficient generation of sulfate radicals and evaluates their applications and economic feasibility. The degradation behavior as well as the efficiency of the generated sulfate radicals of typical domestic and industrial wastewater treatment is investigated. The categories and characteristics of the intermediates are also evaluated. The role of sulfate radicals, their kinetic characteristics, and possible mechanisms for organic elimination are assessed. In the last section, current difficulties and future perspectives of SR-AOPs for wastewater treatment are summarized.

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Section: Properties Of Pms and Psmentioning

confidence: 99%

Section: Performance Of Ps/pms Oxidationmentioning

confidence: 99%

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

et al. 2020

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“…The ratio of the apparent kinetic constant is about 1:4:5:8:8 when NO3concentration is 1, 3, 5, 7, 9 mM. It shows that NO3 -can enhance •OH generation rate, thereby increasing the apparent kinetic constant of decolorization during the degradation process (Li et al, 2019;Ding et al, 2020). Therefore, NO3 -concentration is 7mM.…”

Section: The Effect Of No3concentrationmentioning

confidence: 85%

“…The intermediate products of RR24 were obtained by LC-MS (Agilent 1290 UPLC/6550 Q-TOF, USA) (Li et al, 2019). A Waters C18 column (2.1 mm×50 mm) was applied to LC analysis.…”

mentioning

confidence: 99%

Improved electrochemical oxidative degradation of Reactive Red 24 dye by BDD anodes coupled with nitrate: operating parameters, kinetics, and degradation pathways

Tang¹,

He²,

Guo³

et al. 2021

Preprint

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The electrochemical oxidation (EO) process coupled with BDD anode and nitrate was used to improve Reactive Red 24 (RR24) removal efficiency in wastewater treatment. The effects of operating parameters on the decolorization efficiency of RR24 were discussed, and the optimal operating parameters were obtained as follows: 45 mA cm− 2, 100 mM SO42−, 7 mM NO3−, 60°C, pH 5.88, and 100 mg L− 1 RR24 initial concentration. The energy consumption for 100% decolorization within 15 min is 0.92 kWh m− 3, and the total organic carbon (TOC) reaches 51.35% within 90 min. Through the effect of quenchers on RR24 decolorization efficiency, various active species in the EO process were studied. It was found that •OH was closely related to the decolorization degradation of RR24, reaching a contribution rate of 99.47%. Finally, we propose the degradation pathways of RR24 by UV-Vis spectrum and LC-MS test. In summary, the proposed treatment process could be applied to treat RR24 dyes as an efficient method.

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“…Chemical methods to treat dye wastewater use chemical reactions to separate and recycle pollutants in wastewater or change their properties to make the water harmless. The main methods of dye wastewater treatment [23][24][25], coagulation [26][27][28], oxidation [29][30][31][32], photochemical [33][34][35][36][37], and electrochemical [38][39][40] are commonly used in the treatment of azo dye wastewater. Among them, the photochemical method is the most attractive method as it utilizes clean solar energy [41].…”

Section: Introductionmentioning

confidence: 99%

Carbene Ligand-Doped Fe2O3 Composite for Rapid Removal of Multiple Dyes under Sunlight

et al. 2021

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Contaminated water due to industrial organic dyes presents a significant challenge to sustainability. As a material of green energy, photocatalysts offer an effective and environmentally friendly way to deal with organic dyes for water treatment. A series of simple and highly efficient iron photocatalysts with carbene ligands were developed, which, under the illumination of sunlight, can rapidly degrade multiple organic dyes in water at room temperature, including rhodamine B (RhB), indigo carmine (IC), methyl blue (MB), and congo red (CR). The field-only surface integral method was carried out to determine the absorption spectrum of photocatalyst particles. Under the optimized experimental conditions which were selected by the orthogonal experiments for four dyes, 0.5a@Fe2O3 and 2c@Fe2O3 demonstrated good stability and photocatalytic activity. These two composite materials not only have the ability to remove 98.0% of the degradation in 10 s, but also maintain high reactivity after a few cycles of repeated use.

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Improved degradation of anthraquinone dye by electrochemical activation of PDS

Cited by 85 publications

References 67 publications

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

A Review Study on Sulfate-Radical-Based Advanced Oxidation Processes for Domestic/Industrial Wastewater Treatment: Degradation, Efficiency, and Mechanism

Improved electrochemical oxidative degradation of Reactive Red 24 dye by BDD anodes coupled with nitrate: operating parameters, kinetics, and degradation pathways

Carbene Ligand-Doped Fe2O3 Composite for Rapid Removal of Multiple Dyes under Sunlight

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