Treatment of soil contaminated with petroleum hydrocarbons using activated persulfate oxidation, ultrasound, and heat: A kinetic and thermodynamic study

Li, Yongtao; Zhang, Jiu-Jiang; Li, Yu-Hang; Chen, Jing‐Lin; Du, Wan-Ying

doi:10.1016/j.cej.2021.131336

Cited by 61 publications

(18 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The removal rates of n-alkanes treated by g-C 3 N 4 and BC/g-C 3 N 4 were much higher than the TPH removal rates in soil samples. This indicated that g-C 3 N 4 and BC/g-C 3 N 4 were relatively ineffective in removing branched and cyclic alkanes from the TPH, and that the remaining constituents in the soil were mostly obstinate-branched and cyclic alkanes [ 46 ].…”

Section: Resultsmentioning

confidence: 99%

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Lin

Yang

Shang

et al. 2022

IJERPH

View full text Add to dashboard Cite

This work developed an environmentally-friendly soil remediation method based on BC and g-C3N4, and demonstrated the technical feasibility of remediating petroleum-contaminated soil with biochar/graphite carbon nitride (BC/g-C3N4). The synthesis of BC/g-C3N4 composites was used for the removal of TPH in soil via adsorption and photocatalysis. BC, g-C3N4, and BC/g-C3N4 have been characterized by scanning electron microscopy (SEM), Brunauer–Emmett–Teller surface area analyzer (BET), FT-IR, and X-ray diffraction (XRD). BC/g-C3N4 facilitates the degradation due to reducing recombination and better electron-hole pair separation. BC, g-C3N4, and BC/g-C3N4 were tested for their adsorption and photocatalytic degradation capacities. Excellent and promising results are brought out by an apparent synergism between adsorption and photocatalysis. The optimum doping ratio of 1:3 between BC and g-C3N4 was determined by single-factor experiments. The removal rate of total petroleum hydrocarbons (TPH) by BC/g-C3N4 reached 54.5% by adding BC/g-C3N4 at a dosing rate of 0.08 g/g in a neutral soil with 10% moisture content, which was 2.12 and 1.95 times of BC and g-C3N4, respectively. The removal process of TPH by BC/g-C3N4 conformed to the pseudo-second-order kinetic model. In addition, the removal rates of different petroleum components in soil were analyzed in terms of gas chromatography–mass spectrometry (GC-MS), and the removal rates of nC13-nC35 were above 90% with the contaminated soil treated by BC/g-C3N4. The radical scavenger experiments indicated that superoxide radical played the major role in the photocatalytic degradation of TPH. This work definitely demonstrates that the BC/g-C3N4 composites have great potential for application in the remediation of organic pollutant contaminated soil.

show abstract

Section: Resultsmentioning

confidence: 99%

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Lin

Yang

Shang

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…PMSO can be selectively oxidized to sulfones (e.g., methyl phenyl sulfone, PMSO 2 ) by M (n+2)+ �O. 239 In addition, the 18 O isotope-labeling technique can be used to verify the existence of M (n+2)+ �O via the oxygen atom exchange (OAE) reaction between M (n+2)+ �O and H 2 18 O. 239,246 Using H 2 18O as the matrix, the 18 O can be transported to M (n+2)+ � 16 O to form M (n+2)+ � 18 O, which can then react with PMS 16 O to form PMS 16 O 18 O.…”

Section: Molecular Decay On Sacs Radical Generationmentioning

confidence: 99%

“…Several precursor chemicals have been applied, including hydrogen peroxide (H 2 O 2 ), , persulfates such as peroxymonosulfate (PMS, HSO 5 – ) and peroxydisulfate (PDS, S 2 O 8 2– ), sulfite (SO 3 2– ), and chlorine (Cl 2 /HOCl). ,, Among these, persulfate-based AOPs have been increasingly considered as a viable alternative to conventional H 2 O 2 -based AOPs due to their advantages, including longer half-life (30–40 μs) and higher oxidation potential ( E 0 (SO 4 •– /SO 4 2– ) = +2.60 ∼ +3.10 V NHE ) of sulfate radicals (SO 4 •– ) than hydroxyl radicals ( • OH, half-life = 1–100 ns, , E 0 ( • OH/OH – ) = +1.90 ∼ +2.70 V NHE ), , high radical formation yield, less dependence on pH, , and lower cost for storage and transportation of persulfate salt than H 2 O 2 solution . To date, persulfate-based AOPs have been explored to oxidatively remove a wide range of organic pollutants such as polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), petroleum hydrocarbons, antibiotics, pesticides, phthalates, and pharmaceuticals and personal care products (PPCPs) in various water remediation scenarios …”

Section: Introductionmentioning

confidence: 99%

“…•− ) than hydroxyl radicals ( • OH, half-life = 1−100 ns, 9,10 E 0 ( • OH/OH − ) = +1.90 ∼ +2.70 V NHE ), 11,12 high radical formation yield, 13 less dependence on pH, 14,15 and lower cost for storage and transportation of persulfate salt than H 2 O 2 solution. 5 To date, persulfate-based AOPs have been explored to oxidatively remove a wide range of organic pollutants such as polychlorinated biphenyls (PCBs), 16 polycyclic aromatic hydrocarbons (PAHs), 17 petroleum hydrocarbons, 18 antibiotics, 19 pesticides, 20 phthalates, 21 and pharma-ceuticals and personal care products (PPCPs) in various water remediation scenarios. 22 To activate persulfate and in situ produce reactive radicals such as SO 4…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Outlook on Single Atom Catalysts for Persulfate-Based Advanced Oxidation

Kim

2022

ACS EST Eng.

View full text Add to dashboard Cite

Single atom catalysts (SACs) have emerged as a promising catalyst material architecture for energy, chemical, and environmental applications. In the past several years, SACs have been increasingly explored for persulfate-based advanced oxidation processes (AOPs) due to their superior persulfate activation and pollutant degradation performance compared to benchmark dissolved ion and nanoparticle catalysts. However, there still exist uncertainties on the mechanism of persulfate activation by SACs, which involves a complex interplay of sulfate and hydroxyl radicals, singlet oxygen, high-valent metal species, and/or mediated electron transfer. Questions also remain as to how persulfate ions molecularly align on the single atom site, how persulfate ions are converted into reactive species, and what design parameters lead to higher efficiency for persulfate activation and pollutant degradation. In this critical review, we examine past SAC materials employed for persulfate-based AOPs and discuss how they function differently compared to their ion and nanoparticle counterparts. We further our discussion on current limitations, opportunities, and future research needs in (i) filling the knowledge gaps in the mechanisms of persulfate-SAC interactions; (ii) augmenting fundamental research with theoretical simulation and in situ characterization techniques; (iii) improving material design tailored for environmental applications; and (iv) proactively considering the challenges associated with engineering practices and complex water matrixes.

show abstract

“…Ultrasound (US) is the most common wave that can generate mechanical energy. PS is converted into •SO 4 − under the action of ultrasound; the reaction equation follows [122]:…”

Section: Piezoelectric Catalytic Activationmentioning

confidence: 99%

A Review of Activation Persulfate by Iron-Based Catalysts for Degrading Wastewater

Zhi

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

Advanced oxidation technology of persulfate is a new method to degrade wastewater. As the economy progresses and technology develops, increasingly more pollutants produced by the paper industry, printing and dyeing, and the chemical industry are discharged into water, causing irreversible damage to water. Methods and research directions of activation persulfate for wastewater degradation by a variety of iron-based catalysts are reviewed. This review describes the merits and demerits of advanced oxidation techniques for activated persulfate by iron-based catalysts. In order to promote the development of related research work, the problems existing in the current application are analyzed.

show abstract

Treatment of soil contaminated with petroleum hydrocarbons using activated persulfate oxidation, ultrasound, and heat: A kinetic and thermodynamic study

Cited by 61 publications

References 64 publications

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Outlook on Single Atom Catalysts for Persulfate-Based Advanced Oxidation

A Review of Activation Persulfate by Iron-Based Catalysts for Degrading Wastewater

Contact Info

Product

Resources

About