NaOH–ball-milled co-modified magnetic biochar and its oil adsorption properties

Wei, Zehua; Li, Haihong; Jia, Miaomiao; Lin, Tao

doi:10.1016/j.partic.2023.02.005

Cited by 3 publications

(1 citation statement)

References 28 publications

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“…The AMP demonstrated an impressive oil uptake capacity, absorbing between 9.9 to 12.02 times its own weight (Figure f). These values were 3 to 4 times higher than the absorption capacity previously reported. − As of now, hydrophobic MNP composites have primarily been employed for oil absorption in oil/water separation applications. − In our specific case, our goal is to efficiently and rapidly remove hydrophobic MP present in the oil through oil absorption. The oil uptake data indicate that our AMP has the potential to effectively remove hydrophobic MPs dispersed in various types of oils through an oil absorption method.…”

Section: Resultsmentioning

confidence: 84%

Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics

Son,

Jung,

Koo

et al. 2024

ACS Appl. Mater. Interfaces

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The study explores the synthesis and versatile properties of amphiphilic magnetic particles (AMPs) achieved through sequential coatings. Modulating the hydrophobic content in the synthesis process allows for the formation of hydrophilic, amphiphilic, and hydrophobic magnetic particles, with stable AMPs synthesis achieved at a ratio of hydrophilic to hydrophobic portions of approximately 71 to 29%. These AMPs exhibited outstanding dispersion in both oil and water within an oil/water mixture. Polyethylenimine in the AMP primarily enhances the removal of hydrophilic microparticles and facilitates dispersion in water. On the other hand, octadecylamine is specifically designed for the effective elimination of hydrophobic microparticles and their dispersion in oil. AMPs demonstrated effective removal capabilities for both hydrophilic and hydrophobic microparticles in water as well as hydrophobic microparticles in 100% oil. Our approach is also suited for eliminating hydrophobic microparticles dispersed in small quantities of oil floating on large bodies of water in real-world situations.

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Section: Resultsmentioning

confidence: 84%

Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics

Son,

Jung,

Koo

et al. 2024

ACS Appl. Mater. Interfaces

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New porous adsorbents based on natural polymers for treatment of motor oil contaminated wastewaters

Spiridon,

Apostol,

Dinu

et al. 2024

Journal of Polymer Science

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This study aims to develop efficient adsorptive materials for retaining used 5w40 motor oil using xanthan (XG), xanthan esterified with acrylic acid (XGAC), Lignoboost lignin (LB), and LB esterified with oleic and stearic acids. The adsorption capacities of these materials were systematically evaluated, revealing a hierarchical efficacy with XG exhibiting the highest performance (60.16 g/g), followed by XGAC/LB (59.92 g/g) and XGAC (55.79 g/g). These capacities were correlated with the materials' surface area and morphology. Additionally, accelerated weathering studies assessed the degradation process of the adsorptive materials over time, revealing that all of them undergo significant structural changes, which suggests potential pathways for environmentally friendly disposal. Kinetic studies indicated that the experimental data fit well with the pseudo‐second‐order (PSO) model. The high correlation coefficient values for the PSO model (0.9318–0.9998) confirmed its suitability for describing the kinetics of oil sorption. FTIR spectra of the used motor oil‐loaded materials confirmed the physical nature of the adsorption process, involving interactions such as hydrogen bonding, van der Waals forces, and π–π interactions. SEM analysis demonstrated that materials with larger pore sizes showed less efficient oil adsorption despite having high porosity, highlighting the importance of optimal pore size distribution for effective adsorption.

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Marine oil spill remediation by Candelilla wax modified coal fly ash cenospheres

Sun

Wang

et al. 2023

Chemosphere

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NaOH–ball-milled co-modified magnetic biochar and its oil adsorption properties

Cited by 3 publications

References 28 publications

Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics

Amphiphilic Magnetic Particles Dispersed in Water and Oil for the Removal of Hydrophilic and Hydrophobic Microplastics

New porous adsorbents based on natural polymers for treatment of motor oil contaminated wastewaters

Marine oil spill remediation by Candelilla wax modified coal fly ash cenospheres

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