Catalytic effects of activated-carbon particle size on the oxidative degradation mechanisms of a pharmaceutical

Kim, Do Gun; Pham, Van Luan; Ko, Seok Oh

doi:10.1016/j.jece.2022.107179

Cited by 8 publications

(5 citation statements)

References 48 publications

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“… 34 The 2D band, is a second-order vibration of the G band, of which the intensity increases with the number of single graphene layers. 35 the board 2D peak on SC-Zn indicated more single-layer graphene structures compared with others.…”

Section: Resultsmentioning

confidence: 65%

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Qin,

Wang,

Zhang

et al. 2024

RSC Adv.

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Section: Resultsmentioning

confidence: 65%

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Qin,

Wang,

Zhang

et al. 2024

RSC Adv.

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“…cluster size. Some researchers reported that the size of AC affects the characteristics, and it can be optimized [92][93]. For example, the smallest AC particle in their research depicted higher speci c surface area, pore volume, macropores, and fractions of sp 2 -C and C = O, but lower ID/IG and fractions of sp 3 -C and O-C = O compared to the largest AC particle.…”

Section: Raman Structural Analysismentioning

confidence: 99%

Effects of Nanometer Particle Size on the Properties of Activated Carbon from Terminalia Catappa Fruits Waste

Purhanudin¹,

Idris

Pallan³

2022

Preprint

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Activated carbon (AC) derived from agricultural by-products, such as Terminalia catappa (TC) fruit waste has been demonstrated as a potential AC material in reducing the production cost in the industry. It also retains the benefits of agricultural by-products, such as being abundant and renewable, environmentally safe, and structurally porous. Several studies have been conducted on the materials’ properties of the prepared ACs from TC fruits at various particle sizes. The top-down approach of high energy ball milling (HEBM) is a simple technique used in reducing the particle size of TC to the nanoscale. Moreover, the ACs have been successfully synthesized by pre-carbonization methods, as well as chemical and physical activations. The pre-carbonization process was performed at 400 oC for 4 hours. The chemical activation was conducted using the KOH impregnation ratio as an activating agent, and a further physical process to activate the carbon was performed in a horizontal tube furnace at 750 oC for two hours with N2 gas flow. The properties and characteristics of Terminalia catappa fruits as ACs were obtained by calculating the percentage yield of ACs and analysis of the surface morphology and elemental composition, particle size, phase analysis, structural analysis, and surface area by using FESEM-EDX, TEM, XRD, Raman spectroscopy, and BET respectively. The percentage yield of ACs was increased with reduced particle size from TC powder, which was in the range of 30–71%. The surface morphology of the prepared ACs reflected the porous structure and the most abundant elements found in the ACs were C, O, and K. The average particle size of all crushed samples obtained was less than 100 nm. The XRD result confirmed the formation of crystalline structures of the graphitic carbon. The results of surface area analysis indicate that the pore size of the activated carbon is mostly in the range of mesopore, whereas the structural analysis depicts that the ratio of ID/IG of AC is nearly the same in between 0.8 to 0.92 and is slightly lower than TC. Thus, the development of agricultural waste-derived mesoporous activated carbon materials is potentially useful for various applications.

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“…Kaarela et al [27] compared the catalytic performance of two virgin granular activated carbons in the oxidation of natural organic matter by ClO 2 . Kim et al [28] explored the effect of particle size on the catalytic performance of activated-carbon in the oxidative degradation of a pharmaceutical by persulphate. Huang et al [29] investigated the effect of surface functional group on the catalytic ability of activated carbon in the oxidation of bisphenol-A by chlorine.…”

Section: Introductionmentioning

confidence: 99%

Regeneration of [Fe(II)‐NTA]⁻ catalyzed by activated carbon in the simultaneous removal of sulphur dioxide and nitric oxide

2023

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The combined control of NO and SO2 can be finished with the [Fe(II)‐NTA]− solution because [Fe(II)‐NTA]− is capable of binding NO. However, the ability of [Fe(II)‐NTA]− to bind NO may be lost quickly due to the fast oxidation of [Fe(II)‐NTA]− to [Fe(III)‐NTA] by oxygen in the flue gases. To make it possible to put this technology into commercial application, efficient measures should be taken to regenerate [Fe(II)‐NTA]− to maintain the NO removal efficiency for a long time. The catalytic activity of activated carbon in the reproduction of [Fe(II)‐NTA]− has been investigated in a fixed‐bed reactor. The experiments indicate that [Fe(II)‐NTA]− reproduction increases with [Fe(III)‐NTA] and SO32− concentrations as well as temperature. Fast flow and high pH are unfavourable for the reproduction of [Fe(II)‐NTA]−. An NO removal efficiency of 80.11%–89.78% is sustained for a long period of time with the [Fe(II)‐NTA]− reproduction catalyzed by activated carbon. The reaction orders with respect to [Fe(III)‐NTA] and SO32− are 0.784 and 0.336, respectively. The apparent activation energy for this catalytic reaction is estimated to be 41.01 kJ mol−1.

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Catalytic effects of activated-carbon particle size on the oxidative degradation mechanisms of a pharmaceutical

Cited by 8 publications

References 48 publications

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Effects of Nanometer Particle Size on the Properties of Activated Carbon from Terminalia Catappa Fruits Waste

Regeneration of [Fe(II)‐NTA]⁻ catalyzed by activated carbon in the simultaneous removal of sulphur dioxide and nitric oxide

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Catalytic effects of activated-carbon particle size on the oxidative degradation mechanisms of a pharmaceutical

Cited by 8 publications

References 48 publications

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Zinc and sulfur functionalized biochar as a peroxydisulfate activator via deferred ultraviolet irradiation for tetracycline removal

Effects of Nanometer Particle Size on the Properties of Activated Carbon from Terminalia Catappa Fruits Waste

Regeneration of [Fe(II)‐NTA]− catalyzed by activated carbon in the simultaneous removal of sulphur dioxide and nitric oxide

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Product

Resources

About

Regeneration of [Fe(II)‐NTA]⁻ catalyzed by activated carbon in the simultaneous removal of sulphur dioxide and nitric oxide