Metal-free activation of persulfates by corn stalk biochar for the degradation of antibiotic norfloxacin: Activation factors and degradation mechanism

Wang, Bo; Li, Yanni; Wang, Li

doi:10.1016/j.chemosphere.2019.124454

Cited by 96 publications

(12 citation statements)

References 52 publications

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“…A significant suppression of BPA removal with the presence of L-histidine and FFA can be observed from Figure , indicating the involvement of 1 O 2 for BPA degradation in the PMC+PS system. Based on the above analysis, it can be concluded that both the radical ( • OH and SO 4 •– ) and nonradical ( 1 O 2 ) pathways were involved in BPA removal in the PMC+PS system …”

Section: Resultsmentioning

confidence: 92%

“…) and nonradical ( 1 O 2 ) pathways were involved in BPA removal in the PMC+PS system. 37 In order to further verify the reactive species in the PMC+PS system, DMPO and TEMP are used as the spin trapping agents to prove the existence of these reactive species in the PMC+PS system by EPR. According to the EPR spectrum in Figure 9a, no obvious signals are observed in the solely PS system.…”

Section: Catalytic Activities Of Pmc Under Different Conditionsmentioning

confidence: 99%

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Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

Feng¹,

Faraj

Yan³

et al. 2022

Ind. Eng. Chem. Res.

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The design of a high-efficiency and ecofriendly persulfate (PS) activator with low cost and superior performance in water decontamination still remains a big challenge. Herein, we report a facile strategy for the synthesis of novel pyrolusite-templated mesoporous catalyst (PMC), and used it as a green PS activator for the outstanding removal of bisphenol A (BPA) in water. The N2 adsorption–desorption curves and SEM-EDS images show that pyrolusite templating can successfully modulate the mesoporous structure of the catalyst; the XRD and XPS spectra indicate that pyrolusite templating renders the catalyst with enriched active sites and faster electron transfer. The mechanism studies suggest that both the radical and nonradical pathway [singlet oxygen (1O2)] contributed to BPA degradation, and 86.81% of the total organic carbon (TOC) of 100 mg/L BPA was removed using merely 0.4 g/L PMC, without detectable metal ion leaching. This work provides a new strategy for the structural design and property adjustment of an efficient persulfate catalyst for green environmental remediation.

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Section: Resultsmentioning

confidence: 92%

Section: Catalytic Activities Of Pmc Under Different Conditionsmentioning

confidence: 99%

Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

Feng¹,

Faraj

Yan³

et al. 2022

Ind. Eng. Chem. Res.

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“…47.34% to 86.70% with biochar concentration from 0.1 g/L to 0.9 g/L after 120 min. This trend was probably due to the increase in the number of active sites according to [14]. When the dosage was above 0.5 gbiochar/L, the increase of humic acid removal was not obvious and the difference of the final removal rate was very small.…”

Section: Characterization Of Corn Stalk Biocharmentioning

confidence: 95%

“…There are many factors that affect the performance of biochar, including pyrolysis temperature, source of raw materials, modification methods and types of substrates to be removed. For example, 94.2%of norfloxacin was removed by persulfate and corn stalk biochar [14]. Egg shell biochar with persulfate achieved 90%of 2,4-dichlorophenol…”

Section: Introductionmentioning

confidence: 99%

Removal of humic substances by the synergistic effect of biochar adsorption and activation of persulfate

Liu

Dong

et al. 2021

Journal of Water Process Engineering

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“…Studies have shown that pollutant degradation may occur on the biochar surface [ 38 , 62 ]. The high specific surface area of biochar can provide sufficient space for the reaction and enhance the loading of active sites and the adsorption capacity for pollutants [ 63 , 64 , 65 ].…”

Section: Pristine Biochar With Desirable Active Sites For Ps Activati...mentioning

confidence: 99%

A Mini Review on Persulfate Activation by Sustainable Biochar for the Removal of Antibiotics

Zhou

et al. 2022

Materials

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Antibiotic contamination in water bodies poses ecological risks to aquatic organisms and humans and is a global environmental issue. Persulfate-based advanced oxidation processes (PS-AOPs) are efficient for the removal of antibiotics. Sustainable biochar materials have emerged as potential candidates as persulfates (Peroxymonosulfate (PMS) and Peroxydisulfate (PDS)) activation catalysts to degrade antibiotics. In this review, the feasibility of pristine biochar and modified biochar (non-metal heteroatom-doped biochar and metal-loaded biochar) for the removal of antibiotics in PS-AOPs is evaluated through a critical analysis of recent research. The removal performances of biochar materials, the underlying mechanisms, and active sites involved in the reactions are studied. Lastly, sustainability considerations for future biochar research, including Sustainable Development Goals, technical feasibility, toxicity assessment, economic and life cycle assessment, are discussed to promote the large-scale application of biochar/PS technology. This is in line with the global trends in ensuring sustainable production.

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Metal-free activation of persulfates by corn stalk biochar for the degradation of antibiotic norfloxacin: Activation factors and degradation mechanism

Cited by 96 publications

References 52 publications

Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

Novel Pyrolusite-Templated Biochar as an Outstanding Catalyst for Persulfate Activation: Structural Design, Synergistic Effect, and Mechanism

Removal of humic substances by the synergistic effect of biochar adsorption and activation of persulfate

A Mini Review on Persulfate Activation by Sustainable Biochar for the Removal of Antibiotics

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