Integrated influence of sulfide modification on the reactivity of nanoscale zero-valent iron towards decabromodiphenyl ether under an electromagnetic field.

Journal of hazardous materials · 2024 · Benefit · Insufficient evidence

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BenefitInsufficient evidencePaper 5855

Study snapshot

PublicationJournal of hazardous materials · 2024

Study typeother

Reported directionBenefit

Evidence ratingInsufficient

Abstract

Individual application of sulfide modification and electromagnetic field (EMF) can enhance the reactivity of nanoscale zero-valent iron (nZVI), yet the potential of both in combination is not clear. This work found that the reactivity of nZVI towards decabromodiphenyl ether was significantly enhanced by the combined effect of sulfidation and EMF. The specific reaction rate constant of nZVI increased by 7 to 10 times. A series of characterization results revealed that the sulfidation level not only affects the inherent reactivity but also the magnetic-induced heating (MIH) and corrosion (MIC) of nZVI. These collectively influence the degradation efficiency of nZVI under EMF. Sulfidation generally diminished the MIH effect. The low degree of sulfidation (S/Fe = 0.1) slightly reduced the MIC effect by 21.4%. However, the high degree of sulfidation (S/Fe = 0.4) led to significantly enhanced MIC effect by 107.1%. For S/Fe = 0.1 and 0.4, the overall enhancement in the reactivity resulting from EMF was alternately dominated by the contributions of MIH and MIC. This work provides valuable insights into the MIH and MIC effects about the sulfidation level of nZVI, which is needed for further exploration and optimization of this combined technology.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionbenefit

PopulationNot supplied

Sample sizeNot supplied

ExposureNot supplied

Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Combined sulfidation and electromagnetic field (EMF) significantly enhanced nZVI reactivity toward decabromodiphenyl ether, increasing the specific reaction rate constant by 7–10 times. Sulfidation level influenced both magnetic-induced heating (MIH) and magnetic-induced corrosion (MIC): sulfidation generally diminished MIH; at S/Fe=0.1 MIC was reduced by 21.4%, while at S/Fe=0.4 MIC increased by 107.1%, with MIH vs MIC alternately dominating overall EMF-related enhancement depending on sulfidation level.

Outcomes measured

Reactivity of nanoscale zero-valent iron (nZVI) toward decabromodiphenyl ether
Specific reaction rate constant changes under combined sulfidation and EMF
Magnetic-induced heating (MIH) effects
Magnetic-induced corrosion (MIC) effects
Degradation efficiency under EMF as a function of sulfidation level (S/Fe ratios)

Limitations

EMF parameters (e.g., frequency, field strength) not reported in the abstract
No sample size or number of experiments reported in the abstract
Engineering/chemical reactivity context; no health outcomes assessed

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "electromagnetic field (laboratory/engineering application)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Reactivity of nanoscale zero-valent iron (nZVI) toward decabromodiphenyl ether",
    "Specific reaction rate constant changes under combined sulfidation and EMF",
    "Magnetic-induced heating (MIH) effects",
    "Magnetic-induced corrosion (MIC) effects",
    "Degradation efficiency under EMF as a function of sulfidation level (S/Fe ratios)"
  ],
  "main_findings": "Combined sulfidation and electromagnetic field (EMF) significantly enhanced nZVI reactivity toward decabromodiphenyl ether, increasing the specific reaction rate constant by 7–10 times. Sulfidation level influenced both magnetic-induced heating (MIH) and magnetic-induced corrosion (MIC): sulfidation generally diminished MIH; at S/Fe=0.1 MIC was reduced by 21.4%, while at S/Fe=0.4 MIC increased by 107.1%, with MIH vs MIC alternately dominating overall EMF-related enhancement depending on sulfidation level.",
  "effect_direction": "benefit",
  "limitations": [
    "EMF parameters (e.g., frequency, field strength) not reported in the abstract",
    "No sample size or number of experiments reported in the abstract",
    "Engineering/chemical reactivity context; no health outcomes assessed"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic field",
    "nanoscale zero-valent iron",
    "nZVI",
    "sulfidation",
    "decabromodiphenyl ether",
    "reactivity",
    "magnetic-induced heating",
    "magnetic-induced corrosion",
    "degradation"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1016/j.jhazmat.2024.134428
PubMed: 38691928

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