Aerogels for the separation of asphalt-containing oil–water mixtures and the effect of asphalt stabilizer

Lin, Bin; Wang, Zufei; Zhu, Qingjun; Hamzah, Wafaa Nazurah Binti; Yao, Zhen; Cao, Kun

doi:10.1039/d0ra00544d

Cited by 13 publications

(7 citation statements)

References 45 publications

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“…For comparison, the filtration rate of the simple oil−water system was only reduced to 93.3% of its initial value after 30 min. This is because asphalt as a natural emulsifier can emulsify the oil− water mixture, 47 so that a greater driving force is required for oil−water separation during filtration, thereby reducing the filtration speed. In addition, when toluene-containing asphalt came in contact with the aerogel membrane, asphalt adhered to the aerogel surface and formed large particles to block the aerogel pores.…”

Section: Resultsmentioning

confidence: 99%

“…Toluene was obtained from Jiangsu Yonghua Fine Chemicals Co., Ltd. SNODMI, the asphalt stabilizer, was synthesized in our laboratory. 47 4.2. Preparation of CECS Aerogels.…”

Section: Methodsmentioning

confidence: 99%

“…Chitosan (90% deacetylation) was supplied by J&K Scientific Ltd. Urea, sodium hydroxide, and ethanol of analytical grade were provided by Aladdin. Toluene was obtained from Jiangsu Yonghua Fine Chemicals Co., Ltd. SNODMI, the asphalt stabilizer, was synthesized in our laboratory …”

Section: Methodsmentioning

confidence: 99%

“…In our previous work, the polydicyclopentadiene (PDCPD)-based aerogel membrane with super-lipophilic and super-hydrophobic properties was prepared to filter the asphalt-containing oil–water mixture. By using an asphalt stabilizer, poly(styrene- alt -octadecyl maleimide) (SNODMI), the asphalt–toluene mixture can pass through the aerogel membrane and be separated from water.…”

Section: Introductionmentioning

confidence: 99%

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Combination of an Asphalt Stabilizer and a Cellulose–Chitosan Composite Aerogel Used for the Separation of Oil–Water Mixtures Containing Asphalt

et al. 2021

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In this paper, cellulose chitosan composite aerogels were prepared through sol–gel and freeze-drying processes. The porous morphology of the aerogels was controlled by adjusting the cellulose concentration. Within a certain range, as the concentration of cellulose increases, the pore diameter of the composite aerogel becomes smaller and the pore structure becomes denser. The cellulose–chitosan composite aerogel can successfully separate the oil–water mixture without asphalt and showed stable filtration performance. The filtration speed is basically unchanged after a slight decrease and can be maintained at about 90% of the initial filtration speed within 30 min. The filtration speed can reach up to 9315 kg·h–1·m–2. When filtering bituminous oil–water mixtures, the filtration rate decreased significantly, with a 50% drop in 30 min. After adding the asphalt stabilizer poly(styrene-alt-octadecyl maleimide) (SNODMI), which is made in our laboratory, the effect of aerogel filtering the asphalt-containing oil–water mixture is obviously improved, and the downward trend of filtration speed is obviously improved. The combination of SNODMI and cellulose–chitosan has great application potential in the field of asphalt-containing oil–water separation.

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Section: Resultsmentioning

confidence: 99%

“…Toluene was obtained from Jiangsu Yonghua Fine Chemicals Co., Ltd. SNODMI, the asphalt stabilizer, was synthesized in our laboratory. 47 4.2. Preparation of CECS Aerogels.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combination of an Asphalt Stabilizer and a Cellulose–Chitosan Composite Aerogel Used for the Separation of Oil–Water Mixtures Containing Asphalt

et al. 2021

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“…Aerogels are the materials having this property, which makes them suitable for oil/water separation. 133 These materials have a high surface area, hierarchically porous structure and low density, which is benecial for segregating oil/water mixtures. 132,134 Furthermore, similar to sponges, a previous report has shown the recyclability of these materials by the removal of absorbed solvent by simple compression.…”

Section: Absorbent Materialsmentioning

confidence: 99%

Hierarchical porous metal–organic framework materials for efficient oil–water separation

et al. 2022

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Facile construction of a degradable and renewable superhydrophobic indole-based hemiaminal aerogel for efficient oil–water separation

et al. 2023

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Aerogels for the separation of asphalt-containing oil–water mixtures and the effect of asphalt stabilizer

Abstract: In order to separate the asphalt-containing oil–water mixture, an aerogel film was produced through supercritical drying of a polymer gel synthesized using the ring opening metathesis polymerization of dicyclopentadiene (DCPD).

Cited by 13 publications

References 45 publications

Combination of an Asphalt Stabilizer and a Cellulose–Chitosan Composite Aerogel Used for the Separation of Oil–Water Mixtures Containing Asphalt

Combination of an Asphalt Stabilizer and a Cellulose–Chitosan Composite Aerogel Used for the Separation of Oil–Water Mixtures Containing Asphalt

Hierarchical porous metal–organic framework materials for efficient oil–water separation

Facile construction of a degradable and renewable superhydrophobic indole-based hemiaminal aerogel for efficient oil–water separation

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