Electrochemical treatment of malachite green dye wastewater by pulse three-dimensional electrode method

Li, Qinghui; Zhou, Haoyu; Zhang, Fuyue; Yuan, Jinqiu; Dong, Dianquan; Zhang, Liang-Jie; Du, Lei

doi:10.1080/09593330.2022.2157757

Cited by 4 publications

(4 citation statements)

References 48 publications

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“…However, as the PMS concentration continued to increase (4 to 6 mM), the expected increase in RhB removal efficiency never occurred. On the one hand, the RhB was degraded through a direct oxidation process on the surface of the anode and the anodic surface of the CPE (Equation (1)) [ 18 , 19 ]. On the other hand, PMS was activated by the current and the transition metals in the CPE, generating ROS (e.g., OH and SO 4 •− ) to oxidize RhB (Equations (2)–(5)) [ 19 ].…”

Section: Resultsmentioning

confidence: 99%

“…On the one hand, the RhB was degraded through a direct oxidation process on the surface of the anode and the anodic surface of the CPE (Equation (1)) [ 18 , 19 ]. On the other hand, PMS was activated by the current and the transition metals in the CPE, generating ROS (e.g., OH and SO 4 •− ) to oxidize RhB (Equations (2)–(5)) [ 19 ]. Nevertheless, the excess PMS could scavenge ROS with its relative high oxidation potential (Equation (6)) [ 20 , 21 , 22 ].…”

Section: Resultsmentioning

confidence: 99%

“…•− ) to oxidize RhB (Equations ( 2)-( 5)) [19]. Nevertheless, the excess PMS could scavenge ROS with its relative high oxidation potential (Equation ( 6)) [20][21][22].…”

Section: Pms Concentrationmentioning

confidence: 99%

See 2 more Smart Citations

Intensive Treatment of Organic Wastewater by Three-Dimensional Electrode System within Mn-Loaded Steel Slag as Catalytic Particle Electrodes

Ren,

Fu,

Peng

et al. 2024

Molecules

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Developing a green, low-carbon, and circular economic system is the key to achieving carbon neutrality. This study investigated the organics removal efficiency in a three-dimensional electrode reactor (3DER) constructed from repurposed industrial solid waste, i.e., Mn-loaded steel slag, as the catalytic particle electrodes (CPE). The CPE, a micron-grade material consisting primarily of transition metals, including Fe and Mn, exhibited excellent electric conductivity, catalytic ability, and recyclability. High rhodamine B (RhB) removal efficiency in the 3DER was observed through a physical modelling experiment. The optimal operating condition was determined through a single-factor experiment in which 5.0 g·L−1 CPE and 3 mM peroxymonosulfate (PMS) were added to a 200 mL solution of 10 mM RhB under a current intensity of 0.5 A and a 1.5 to 2.0 cm distance between the 2D electrodes. When the initial pH value of the simulated solution was 3 to 9, the RhB removal rate exceeded 96% after 20 min reaction. In addition, the main reactive oxidation species in the 3DER were determined. The results illustrated that HO• and SO4•− both existed, but that the contribution of SO4•− to RhB removal was much lower than that of HO• in the 3DER. In summary, this research provides information on the potential of the 3DER for removing refractory organics from water.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Intensive Treatment of Organic Wastewater by Three-Dimensional Electrode System within Mn-Loaded Steel Slag as Catalytic Particle Electrodes

Ren,

Fu,

Peng

et al. 2024

Molecules

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show abstract

“…This technology has garnered significant attention, particularly in the domains of water electrolysis [5][6][7][8][9], CO 2 reduction [10][11][12], H 2 O 2 production via oxygen reduction reaction (ORR) [13,14], pollutant decomposition [15][16][17], and metal deposition [18][19][20], among others. However, it still suffers from high energy consumption [21,22] and low current efficiency [23]. In fact, these problems arise from a mismatch between mass transport conditions and electron transfer at the electrode/electrolyte interface, as indicated in Equation (1) [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

A Bibliometric Analysis on Pulsed Electrolysis: Electronic Effect, Double Layer Effect, and Mass Transport

Wang,

Liu,

Liu

et al. 2023

Catalysts

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Pulsed electrolysis endowed merits of high current density, low energy consumption, and simple operation; thus, a booming in their publication numbers has been witnessed in recent years. In this review, we aim to summarize the state-of-the-art pulsed current/potential strategy to enhance electrochemical reactions, such as oxygen reduction reactions (ORR), CO2 reduction (CO2RR), CO reduction (COR), etc. It begins with historic analysis of pulsed electrolysis via a bibliometric method, aiming at providing a progress over the course of around 40 years in a quantitative way. Then, the definition along with its influence of electronic effect, double layer effect and mass transport have been reviewed based on a mechanism point of view for the first time. To sum up the review, several current challenges and future prospects of pulsed electrolysis have provided for the future smart design of electrochemical process.

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Research progress of electrolytic treatment technology for organic wastewater

Xu,

Sun,

Yang

et al. 2024

J Solid State Electrochem

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Electrochemical treatment of malachite green dye wastewater by pulse three-dimensional electrode method

Cited by 4 publications

References 48 publications

Intensive Treatment of Organic Wastewater by Three-Dimensional Electrode System within Mn-Loaded Steel Slag as Catalytic Particle Electrodes

Intensive Treatment of Organic Wastewater by Three-Dimensional Electrode System within Mn-Loaded Steel Slag as Catalytic Particle Electrodes

A Bibliometric Analysis on Pulsed Electrolysis: Electronic Effect, Double Layer Effect, and Mass Transport

Research progress of electrolytic treatment technology for organic wastewater

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