Enhanced degradation of petroleum hydrocarbons in soil by FeS@BC activated persulfate and its mechanism

Xia, Chunqing; Liu, Qinglong; Zhao, Ling; Wang, Lan; Tang, Jingchun

doi:10.1016/j.seppur.2021.120060

Cited by 34 publications

(5 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By measuring the levels of dissolved ion (dissolved Fe 2+ and total Fe) in the reaction system, and using hydrophobic phenol and 1, 10−phenanthroline to chelate with surface−bound Fe (II) and dissolved Fe 2+ as quenchers, confirming that the active radicals were mainly generated on the Fe@Carbon surface (He, et al, 2021;Han, et al, 2022). According to the XPS results of catalysts before and after the reaction, the ratio of Fe 2+ to S 2− decreased significantly after the reaction, while that of other sulfur species such as S n 2− and SO 4 2− increased, indicating that Fe (II) and S (−II) species were involved in the reaction process, and S (−II) contribute to the conversion of Fe (III) and Fe (II), which will further enhance the activation of PS (Xia, et al, 2022;Yu, et al, 2022). All of these results suggest that surface−bound Fe (II) plays an important role in the PS activation process and generates ROSs on the FeS@Carbon surface.…”

Section: Carbon Modified Fesmentioning

confidence: 98%

“…Specifically, these hybrids can be synthesized by mixing carbon materials with ferrous salt and sulfide and then reacted at high temperature under hypoxia condition (Ma, et al, 2015;Lyu, et al, 2018b;Hong, et al, 2021), or carbon materials mixed with pre−synthesized iron sulfide and then treated by hydrothermal method (Li, et al, 2022a). In addition, ball−milling can also achieve the combination of FeS with some carbon materials (Lyu, et al, 2018b;He, et al, 2021;Xia, et al, 2022). The mechanism and processes of synthesis of FeS@Carbon materials are exhibited in Figure 2B.…”

Section: The Synthesis Of Carbon Modified Fesmentioning

confidence: 99%

“…FeS@Caobon materials has been widely used to activate persulfate for degradation of organic pollutants, such as petroleum hydrocarbons (Xia, et al, 2022), 2, 4−dichlorophenoxyacetic acid (Hong, et al, 2021), tetracycline (He, et al, 2021), sulfamethazine (Jin, et al, 2022), etc., indicating the potential of FeS@Caobon/PMS system in wastewater remediation.…”

Section: Carbon Modified Fesmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and application of iron sulfide−based materials to activate persulfates for wastewater remediation: a review

Sun

Liu

Fan

et al. 2023

Front. Environ. Sci.

View full text Add to dashboard Cite

Rapid industrial development has led to excessive levels of various contaminants in natural water, which poses a challenge to the innovation of environmental remediation technology. In recent years, iron sulfide and its modified materials have attracted extensive attention in environmental remediation due to their high activity in advanced oxidation processes and widespread existence in anoxic environment. This paper reviewed the latest advances of the synthesis methods for iron sulfide and modified FeS. In addition, the application of persulfate activation by iron sulfide materials (FeS, FeSx, S−ZVI, FeS@Carbon materials and MFexSy) for contaminants remediation is also reviewed, and the enhancement of this system by photo irradiation, ultrasound, and microwave have also been concluded. Additionally, the interaction mechanism of iron sulfide and persulfate with contaminants was reviewed. Based on the above contents, we concluded that the long−term stability of iron sulfide, the toxicity to organisms of iron sulfide materials in the treated water, and the combination of FeS/PS with other assisted technologies should be focused in future.

show abstract

Section: Carbon Modified Fesmentioning

confidence: 98%

Section: The Synthesis Of Carbon Modified Fesmentioning

confidence: 99%

Section: Carbon Modified Fesmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and application of iron sulfide−based materials to activate persulfates for wastewater remediation: a review

Sun

Liu

Fan

et al. 2023

Front. Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…On the one hand, Fe3O4 provides Fe(II) to activate PS, but with further increase in Fe3O4 concentration, Fe(II) also increases, and consequently, more SO4 − • is produced. The excess Fe(II), PS and SO4 − • all have a quenching effect on SO4 − • [31], resulting 5a. The activator concentrations were 0.1-0.8 g/L.…”

Section: Effect Of Activator Dosagementioning

confidence: 99%

Preparation of Fe3O4/α-MnO2 Magnetic Nanocomposites for Degradation of 2,4-DCP through Persulfate Activation

Zhao

Luo²,

Zhou

2022

Water

View full text Add to dashboard Cite

In this study, Fe3O4 magnetic nanoparticles (MNPs) were loaded on α-MnO2 nanowires using an improved hydrothermal synthesis method combined with an ultrasonic coprecipitation method, the loading ratio was optimized, the efficiency of the prepared Fe3O4/α-MnO2-activated persulfate (PS) system for the degradation of 2,4-dichlorophenol (2,4-DCP) was investigated, and the effects of PS concentration, Fe3O4/α-MnO2 magnetic nanocomposites (MNCs) dosage, pH value and initial pollutant concentration on the degradation of 2,4-DCP were investigated. The results showed that when the initial concentrations of 2,4-DCP, PS, and Fe3O4/α-MnO2 MNCs were 100 mg/L, 30 mmol/L, and 0.4 g/L, the degradation rate of 2,4-DCP reached 96.3% after 180 min of reaction at 30 °C under a neutral condition, and the fitting results showed that the degradation of 2,4-DCP by the Fe3O4/α-MnO2-activated PS system conformed to quasi-first-order kinetics. The degradation of 2,4-DCP by different Fe3O4/α-MnO2-activated PS systems was compared, and a possible PS activation mechanism was proposed. The Fe3O4/α-MnO2 MNCs exhibited excellent reusability, and by introducing Fe3O4/α-MnO2 MNCs as the PS activator into the advanced oxidation process (AOP) system, the electron transfer of Mn(III/IV) and Fe(III/II) on the surface of MNCs was realized, thus greatly improving the reaction efficiency.

show abstract

“…Noteworthy observations, such as the influence of Fenton reagent on total organic carbon (TOC) content in the soil and its impact on indigenous soil microbe growth, contribute key insights into enhancing PAH remediation strategies and evaluating their ecological implications [19]. As concerns surrounding the environmental impact of rapid petroleum hydrocarbon degradation through chemical oxidation continue to grow, the quest for environmentally friendly activation methods gains prominence [20]. Against this backdrop, this study sets out with the overarching objective of comprehen-sively assessing the efficiency of chemical oxidation.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Hydrogen Peroxide and Fenton Reagent for Polycyclic Aromatic Hydrocarbon Degradation in Contaminated Soil: Insights from Experimental and Predictive Modeling

Smara,

Khalladi,

Moulai-Mostefa

et al. 2024

Processes

View full text Add to dashboard Cite

This study investigates the degradation kinetics of polycyclic aromatic hydrocarbons (PAHs) using hydrogen peroxide (H2O2) and the Fenton process (H2O2/Fe2+). The effect of oxidant concentration and the Fenton molar ratio on PAH decomposition efficiency is examined. Results reveal that increasing H2O2 concentration above 25 mmol/samples leads to a slight increase in the rate constants for both first- and second-order reactions. The Fenton process demonstrates higher efficiency in PAH degradation compared to H2O2 alone, achieving decomposition yields ranging from 84.7% to 99.9%. pH evolution during the oxidation process influences PAH degradation, with alkaline conditions favoring lower elimination rates. Fourier-transform infrared (FTIR) spectroscopy analysis indicates significant elimination of PAHs after treatment, with both oxidants showing comparable efficacy in complete hydrocarbon degradation. The mechanisms of PAH degradation by H2O2 and the Fenton process involve hydroxyl radical formation, with the latter exhibiting greater efficiency due to Fe2+ catalysis. Gaussian process regression (GPR) modeling accurately predicts reduced concentration, with optimized ARD-Exponential kernel function demonstrating superior performance. The Improved Grey Wolf Optimizer algorithm facilitates optimization of reaction conditions, yielding a high degree of agreement between experimental and predicted values. A MATLAB 2022b interface is developed for efficient optimization and prediction of C/C0, a critical parameter in PAH degradation studies. This integrated approach offers insights into optimizing the efficiency of oxidant-based PAH remediation techniques, with potential applications in contaminated soil remediation.

show abstract

Enhanced degradation of petroleum hydrocarbons in soil by FeS@BC activated persulfate and its mechanism

Cited by 34 publications

References 42 publications

Synthesis and application of iron sulfide−based materials to activate persulfates for wastewater remediation: a review

Synthesis and application of iron sulfide−based materials to activate persulfates for wastewater remediation: a review

Preparation of Fe3O4/α-MnO2 Magnetic Nanocomposites for Degradation of 2,4-DCP through Persulfate Activation

Efficiency of Hydrogen Peroxide and Fenton Reagent for Polycyclic Aromatic Hydrocarbon Degradation in Contaminated Soil: Insights from Experimental and Predictive Modeling

Contact Info

Product

Resources

About