Investigation of Cellulose-Based Aerogels for Oil Spill Removal

Paulauskienė, Tatjana; Uebe, Jochen; Karasu, Ali Ugurcan; Anne, Olga

doi:10.1007/s11270-020-04799-1

Cited by 26 publications

(18 citation statements)

References 28 publications

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“…A contact angle between 90 and 150 indicates a hydrophobic interaction between the water droplet and the samples. The measured contact angles indicate the hydrophobicity of the samples and are in the range also mentioned by the literature (Paulauskiene et al, 2020;Zanini et al, 2017) for such samples.…”

Section: Hydrophobicity Of Aerogel Samplessupporting

confidence: 70%

“…6A , the sorption capacity of the wool and cellulose acetate additivated samples is about 14% higher than the control sample. The control sample shows a comparable sorption capacity as in Paulauskiene et al (2020) . Wool and cellulose acetate thus have a capacity-increasing effect on the sorption of the biodiesel in the first application in Fig.…”

Section: Discussionmentioning

confidence: 80%

“…4 ) are in a range characteristic of cellulose aerogels, as described in Long, Weng & Wang (2018) . The paper-based control sample of this study correspond to those in Paulauskiene et al (2020) .…”

Section: Discussionmentioning

confidence: 99%

“…The wettability of the aerogel surface was investigated by measuring the water contact angle θ using the sessile drop method. As described in Paulauskiene et al (2020) , a high-resolution camera of a smartphone was used to take a close-up picture and the contact angle was calculated using the contact angle measurement software (protractor) based on the droplet shape image obtained.…”

Section: Methodsmentioning

confidence: 99%

“…As a cellulose source for aerogels, there are many possibilities such as plants and plant materials as well as their wastes ( Long, Weng & Wang, 2018 ). The use of paper waste ( Nguyen et al, 2013 ; Paulauskiene et al, 2020 ), the amounts of which are still increasing ( Ferronato & Torreta, 2019 ; Meng-Chuen Chen et al, 2020 ), can be considered particularly sustainable, as the paper industry is one of the largest industries in the world ( Demirel Bayik & Altin, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Hydrophobicity Of Aerogel Samplessupporting

confidence: 70%

Section: Discussionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cellulose aerogel composites as oil sorbents and their regeneration

Paulauskienė¹,

Uebe²,

Ziogas³

2021

PeerJ

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Polydimethylsiloxane‐functionalized polyacrylonitrile nanofibrous aerogels for efficient oil absorption and oil/water separation

Jia

Cheng

et al. 2021

J of Applied Polymer Sci

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The effective removal of oils and organic solvents from water is of great importance for environmental protection. Three‐dimensional nanofibrous aerogels (NFAs) with superabsorbent properties promise a huge potential applicability in oil spills and chemical leaks. However, the production of such NFAs through a facile and economical method is still a great challenge. Here, a very simple solution immersion process is presented to fabricate polydimethylsiloxane‐functionalized polyacrylonitrile NFAs. The obtained NFAs exhibit a superior chemical stability, a high hydrophobicity and an excellent absorption capacity for various oils and organic solvents. More importantly, these NFAs show an outstanding reversible elasticity and could potentially be employed for continuously collecting oils and organic pollutants from water with the assistance of a pump. It is believed that the obtained absorbents could be promising candidate materials for oil and organic solvent spill cleanups under harsh conditions.

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