Facile and scalable synthesis of magnetite/carbon adsorbents by recycling discarded fruit peels and their potential usage in water treatment

Ma, Ji; Sun, Shufeng; Chen, Kezheng

doi:10.1016/j.biortech.2017.02.075

Cited by 45 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared with uncontaminated soil, two new peaks, at 2853 and 2924 cm −1 , arise in the FTIR curve of PCS, which are respectively ascribed to the symmetric and asymmetric C−H stretching vibrations of petroleum hydrocarbons. 41 After fast pyrolysis at 250 °C, these two peaks were still present but became weaker. Then, they almost disappeared in the PCS-F500, implying a drastic removal of petroleum hydrocarbons.…”

Section: Environmental Science and Technologysupporting

confidence: 88%

“…To further verify the performance of fast pyrolysis in PCS remediation, FTIR spectroscopy was used to determine the functional groups of the PCS samples, and the results are shown in Figure a. Compared with uncontaminated soil, two new peaks, at 2853 and 2924 cm –1 , arise in the FTIR curve of PCS, which are respectively ascribed to the symmetric and asymmetric C–H stretching vibrations of petroleum hydrocarbons . After fast pyrolysis at 250 °C, these two peaks were still present but became weaker.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Remediation of Petroleum-Contaminated Soil and Simultaneous Recovery of Oil by Fast Pyrolysis

et al. 2018

Environ. Sci. Technol.

View full text Add to dashboard Cite

Petroleum-contaminated soil (PCS) caused by the accidental release of crude oil into the environment, which occurs frequently during oil exploitation worldwide, needs efficient and cost-effective remediation. In this study, a fast pyrolysis technology was implemented to remediate the PCS and concurrently recover the oil. The remediation effect related to pyrolytic parameters, the recovery rate of oil and its possible formation pathway, and the physicochemical properties of the remediated PCS and its suitability for planting were systematically investigated. The results show that 50.9% carbon was recovered in oil, whose quality even exceeds that of crude oil. Both extractable total petroleum hydrocarbon (TPH) and water-soluble organic matter (SOM) in PCS were completely removed at 500 °C within 30 min. The remaining carbon in remediated PCS was determined to be in a stable and innocuous state, which has no adverse effect on wheat growth. On the basis of the systematically characterizations of initial PCS and pyrolytic products, a possible thermochemical mechanism was proposed which involves evaporation, cracking and polymerization. In addition, the energy consumption analysis and remediation effect of various PCSs indicate that fast pyrolysis is a viable and cost-effective method for PCS remediation.

show abstract

Section: Environmental Science and Technologysupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Remediation of Petroleum-Contaminated Soil and Simultaneous Recovery of Oil by Fast Pyrolysis

et al. 2018

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…These composites could adsorb methyl blue, Congo red, rhodamine B, and Cr 6+ ions for the treatment of wastewater. 83 Composites of magnetite nanoparticles, chitosan nanoparticles, and polythiophene are very efficient in adsorbing Hg from wastewater. 84 Magnetite graphene oxide encapsulated in alginate beads has shown improved performance to adsorb As( v ) and Cr( vi ) from aqueous solutions.…”

Section: Arsenic Removal Using Magnetite Nano Adsorbentsmentioning

confidence: 99%

Recent advances of magnetite nanomaterials to remove arsenic from water

Jain

2022

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Black carbon was chosen because it is one of the smallest nanosized carbons and, in order to maximize its exposed surface area, it was chosen to deposit it on the outer surfaces of magnetite particles. In contrast, other magnetite-carbon composites using carbon nanotubes (CNTs) [22][23][24] or a char [25] have been synthesized for water treatment applications, but these featured the magnetic particles decorated on top of the carbon surfaces where both carbon and magnetite can participate in sorption processes. The nanosized black carbon spheres might also have their surface area more readily exposed compared to activated carbon where much of the surface area resides in pore structures, which limits sorption rates.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

Cai

Larese-Casanova

2020

Nanomaterials

View full text Add to dashboard Cite

Magnetic carbonaceous nanomaterials are needed in water treatment applications because they can offer both carbon surfaces for sorption of organic pollutants and ease of material magnetic retrieval for regeneration and reuse. In this study, we employed a facile one-step method to synthesize a black carbon-magnetite composite (BC-Mag) by high-temperature annealing of black carbon and hematite. The nanocomposite was easily dispersed and stable in water owing to the presence of negatively charged oxygen surface functional groups. Sorption kinetics with dissolved carbamazepine showed a rapid initial uptake with equilibrium achieved within only minutes. The sorption extent can be described with the Freundlich model, and surface area normalized sorption affinity was an order of magnitude greater than conventional granular activated carbon. The sorption extent of neutral carbamazepine remained constant between pH 2–10 while surface zeta potential decreased. BC-Mag can be reused for the sorption of carbamazepine up to six times without significant loss of the sorption extent.

show abstract

Facile and scalable synthesis of magnetite/carbon adsorbents by recycling discarded fruit peels and their potential usage in water treatment

Cited by 45 publications

References 31 publications

Remediation of Petroleum-Contaminated Soil and Simultaneous Recovery of Oil by Fast Pyrolysis

Remediation of Petroleum-Contaminated Soil and Simultaneous Recovery of Oil by Fast Pyrolysis

Recent advances of magnetite nanomaterials to remove arsenic from water

Facile Synthesis and Reuse of Magnetic Black Carbon Magnetite (BC-Mag) for Fast Carbamazepine Removal from Water

Contact Info

Product

Resources

About