Cost-effective and recyclable aerogels from cellulose acetate for oil spills clean-up

Uebe, Jochen; Paulauskienė, Tatjana; Boikovych, Krystyna

doi:10.1007/s11356-021-13369-9

Cited by 12 publications

(7 citation statements)

References 29 publications

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“…To clearly visualize the adsorption property of ANFs/CA composite aerogels, they were placed into a beaker whose lower layer was deionized water and the upper layer was heptane dyed with Sudan red III, as shown in Figure . The initial touch determines the adsorption competition between water and heptane for the samples . When the samples are first contacted with heptane, the hydrophobicity of the samples dominates.…”

Section: Resultsmentioning

confidence: 99%

“…The open three-dimensional porous nanostructure of aerogels makes them an ideal adsorption material. ANFs/CA composite aerogels have certain degrees of hydrophilicity and oleophilicity, which are attributable to their hydroxyl and acetate groups, respectively, allowing them to adsorb various types of substances. , Figure S4 demonstrates that ANFs/CA aerogels are well wettable to both water and heptane. In particular, the wettability to heptane is strengthened as the ratio of CA in the samples increases, while the wettability to water is weakened, which may be due to the differences in their chemical composition and porous structure.…”

Section: Resultsmentioning

confidence: 99%

“…The initial touch determines the adsorption competition between water and heptane for the samples. 51 When the samples are first contacted with heptane, the hydrophobicity of the samples dominates. It is apparent that the block-shaped sample floats on the liquid surface and quickly adsorbs the dyed heptane in the upper layer, and the red color diffuses from the edge to the center of the sample as time passes.…”

Section: Adsorption Capacitymentioning

confidence: 99%

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Fabrication of Monolithic Para-Aramid Nanofibers/Cellulose Acetate Composite Aerogels with Homogeneous and Durable Cross-Linked Nanostructures for Filtration, Adsorption, and Drug Delivery

Ren

Hasuo

Wei

et al. 2022

ACS Appl. Nano Mater.

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Aerogels with porous nanostructures and extremely low densities have drawn a lot of interest recently due to their huge potential applications, but it remains a great challenge to construct tough aerogels with controllable structures. Herein, monolithic composite aerogels consisting of para-aramid nanofibers (ANFs) and cellulose acetate (CA) were successfully fabricated through the “sol–gel-aerogel” process and supercritical fluid drying. The possible presence of complex and strong hydrogen bonds between ANFs and CA was verified by attenuated total reflectance-Fourier transform infrared (ATR-FTIR). To provide a thorough understanding of ANFs/CA composite aerogels, we carefully analyzed their gelation process, macromorphology, micromorphology, porosity, mechanical property, and adsorption capacity. The results show that CA plays a key role in the structural enhancement, porous morphology adjustment, and additional functionalities of the ANFs/CA composite aerogels. ACA-2 exhibited balanced performance across all samples, which has a specific surface area of 315 m2/g, an average pore diameter of 8.53 nm, a pore volume of 0.671 m3/g, a bulk density of 0.0269 g/cm3, a porosity of 98.03%, and a compressive modulus of 1.208 MPa. This work will contribute to the design and production of polymer-based fibrous aerogels with ideal chemical and physical properties. ANFs/CA composite aerogels may have considerable application potential in the fields of filtration, adsorption, and drug delivery.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Adsorption Capacitymentioning

confidence: 99%

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Fabrication of Monolithic Para-Aramid Nanofibers/Cellulose Acetate Composite Aerogels with Homogeneous and Durable Cross-Linked Nanostructures for Filtration, Adsorption, and Drug Delivery

Ren

Hasuo

Wei

et al. 2022

ACS Appl. Nano Mater.

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“…The capacity enhancing effect of the cellulose acetate additive could be explained by the already existing hydrophobicity of cellulose acetate. Cellulose acetate as an independent sorbent with good sorption capacities for oils was demonstrated in Uebe, Paulauskiene & Boikovych (2021) . Wool already showed very good sorption properties as a single sorbent material against MDO in Paulauskiene et al (2014) , so that it can be stated here that wool and cellulose aerogels complement each other as a composite.…”

Section: Discussionmentioning

confidence: 99%

“…Cellulose acetate is not natural and biodegrades slowly, but it is cheap. It has already been produced as an aerogel and used as a sorbent for oil ( Uebe, Paulauskiene & Boikovych, 2021 ; Ifelebuegu et al, 2018 ). The aerogel samples are hydrophobised with a silane reagent, creating a sorbent for oil.…”

Section: Introductionmentioning

confidence: 99%

Cellulose aerogel composites as oil sorbents and their regeneration

Paulauskienė¹,

Uebe²,

Ziogas³

2021

PeerJ

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Background With every oil tanker comes the risk of an accident and oil spill. Sorbents are the most suitable means to remove oil spills. Aerogels as sorbents have high porosity and can be made from cellulose from paper waste. The literature does not distinguish between paper and cardboard as sources of cellulose aerogels and little is known about composites of cellulose aerogels consisting of cellulose fibres and chemically untreated, unprocessed fibres or particles of straw, wool, macroalgae or cellulose acetate from cigarette butts. In this study, the sorption properties for marine diesel oil and biodiesel of such aerogels and their regenerative capacity with bioethanol were investigated. Methods Cellulose aerogels were prepared from office paper and cardboard waste without and with chemically untreated algae, straw, wool and cellulose acetate as a composite by freeze drying. All samples were hydrophobised with methylsilane. The density to calculate the porosity and the contact angle were determined. Then the sorption capacity was determined over five cycles of sorption of oil and regeneration with bioethanol. Results The average contact angle of all samples was 125°, indicating hydrophobicity. Paper-based aerogels were found to consistently have higher sorption capacities for biodiesel, marine diesel oil and bioethanol than cardboard-based aerogels. In particular, the wool/cellulose aerogel composite was found to have better sorption capacity for biodiesel, marine diesel oil and bioethanol than all other samples. The cellulose acetate/cellulose aerogel composite showed significantly higher sorption capacities than the paper and cardboard control samples (highest value is 32.25 g g−1) only when first used as a sorbent for biodiesel, but with a rapid decrease in the following cycles.

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Application of Biodegradable Materials in Oil‐Spill Cleanup: Recent Advances and Future Perspectives

Bhagwat

Jaspal

2023

Adv Eng Mater

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During the transportation of oil, various oil‐spill incidents are reported. The utilization of oil sorbents for the treatment of oil spills is a promising approach among the all‐existing solutions. Nonbiodegradability and non‐renewability are the two major issues in the case of synthetic oil sorbents. In this review, the use of biodegradable polymers for oil‐spill cleanup is highlighted. In each section, the biodegradable materials and modifiers used, the method applied for a modification, the contact angle after modification, sorption capacities, and the reusability of developed biodegradable sorbents are extensively discussed. Mechanisms of biodegradation of biopolymers are also discussed. The manuscript also incorporates the recent developments in the fabrications of advanced sorbents with sustainable approaches along with challenges associated with current sorbents and future prospects.

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Cost-effective and recyclable aerogels from cellulose acetate for oil spills clean-up

Cited by 12 publications

References 29 publications

Fabrication of Monolithic Para-Aramid Nanofibers/Cellulose Acetate Composite Aerogels with Homogeneous and Durable Cross-Linked Nanostructures for Filtration, Adsorption, and Drug Delivery

Fabrication of Monolithic Para-Aramid Nanofibers/Cellulose Acetate Composite Aerogels with Homogeneous and Durable Cross-Linked Nanostructures for Filtration, Adsorption, and Drug Delivery

Cellulose aerogel composites as oil sorbents and their regeneration

Application of Biodegradable Materials in Oil‐Spill Cleanup: Recent Advances and Future Perspectives

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