Degradation of phenol by ball-milled activated carbon (ACBM) activated dual oxidant (persulfate/calcium peroxide) system: Effect of preadsorption and sequential injection

Al-Masud, Md Abdullah; Shin, Won Sik; Kim, Do Gun

doi:10.1016/j.chemosphere.2022.137120

Cited by 19 publications

(2 citation statements)

References 65 publications

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“…The C1s XPS spectrum of M(AC-PS) (Figure 4b) has at 284.8, 286.2, 289.8, 290.1, 292.5, and 293 eV, among which 284.8 and 286.2 eV co to C-C (14.8%) and C-OH (6.01%), respectively. Both 289.8 and 290.1 eV corr O=C-OH (a total of 39.67%), and 292.5 and 293.0 eV correspond to π-π* oscillatin peaks (a total of 26.15%) [45,46]. The significant increase in π-π* satellite in M indicates the greatly enhanced electron transfer capability of the composite ma C1s XPS spectrum peaks of M(AC-PS)-after reaction (Figure 4c) are at 284.8, 28 and 292.0, corresponding to C-C (63.39%), C-OH (17.73%), O=C-OH (13.91%), (4.97%), respectively.…”

Section: Ac Mac M(ac-ps)1 M(ac-ps)2 M(ac-ps)3 M(ac-ps)4 M(ac-ps)5mentioning

confidence: 99%

“…At the same time, the sulfur content in M(AC-PS) is 14.85%, and the O/S mass ratio is 2.75, which is much higher than the ratio in PS, indicating the presence of a large number of oxygen-containing functional groups on the AC in M(AC-PS). The C 1s XPS spectrum of MAC (Figure 4a) was deconvoluted into five peaks at 284.8, 286.3, 287.7, 289.3, and 290.4 eV, corresponding to C-C (75.83%) [44], C-OH (16.56%), C=O (carbonyl, 3.11%), O=C-OH (carboxyl, 4.17%), and π-π* shake-up satellite (0.36%) [45], respectively. The C1s XPS spectrum of M(AC-PS) (Figure 4b) has six peaks at 284.8, 286.2, 289.8, 290.1, 292.5, and 293 eV, among which 284.8 and 286.2 eV correspond to C-C (14.8%) and C-OH (6.01%), respectively.…”

Section: Ac Mac M(ac-ps)1 M(ac-ps)2 M(ac-ps)3 M(ac-ps)4 M(ac-ps)5mentioning

confidence: 99%

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Synthesis of Integrated Material with Activation and Oxidation Functions by Mechanical Milling of Activated Carbon and Persulfate for Enhanced Tetracycline Degradation over Non-Radical Mechanism

Tan,

Meng,

Cao

et al. 2024

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As an alternative to the traditional advanced oxidation process of adding potassium persulfate (PS) and its activator to the solution separately, in this study, M(AC-PS), an integrated activator and catalyst, was synthesized by vacuum ball milling of PS and activated carbon (AC) to improve the PS’s utilization efficiency. The joint mechanical milling caused a change in the preferentially exposed crystal surface of the PS and the generation of more π-π* structures on the AC, leading to successful and stable connection of the PS onto the surface of the AC. Within 40 min, the M(AC-PS) achieved a degradation rate of 97.3% for tetracycline (TC, 20 mg/L), while the mixed system where AC and PS were separately ball milled achieved only a 53.1% removal of TC. Reactive oxygen species and electrochemical tests showed that M(AC-PS) mainly oxidized TC through non-free radical mechanisms. In M(AC-PS), AC provided oxygen-containing functional groups (e.g., C=O) to activate the PS and electron holes as an electron transfer medium, generating 1O2 and promoting electron donation from the TC to enhance the oxidation of the TC. Almost no catalytic components were detected in the solution, indicating that the obtained solid composite material avoids the limitations of solid–liquid interface contact and mass transfer, and then improves the efficiency of activation and catalysis. This study presents a simple and feasible method for obtaining efficient and convenient material for the advanced oxidation treatment of wastewater.

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Section: Ac Mac M(ac-ps)1 M(ac-ps)2 M(ac-ps)3 M(ac-ps)4 M(ac-ps)5mentioning

confidence: 99%

Section: Ac Mac M(ac-ps)1 M(ac-ps)2 M(ac-ps)3 M(ac-ps)4 M(ac-ps)5mentioning

confidence: 99%