A recyclable and regenerated aerogel membrane derived from waste plastic for emulsion separation

Gan, Liping; Zhang, Dan; Yue, Xuejie; Xu, Jicheng; Qiu, Fengxian; Zhang, Tao

doi:10.1016/j.jece.2022.108221

Cited by 23 publications

(4 citation statements)

References 33 publications

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“…O aerogel hidrofóbico produzido exibiu propriedades ultraleves com superfícies rugosas e porosas, que favoreceram a seletividade da separação água/óleo apresentando eficiência de 98,75%. Além disso, a membrana apresentou boa capacidade, durabilidade e separação de emulsões em ambientes hostis, incluindo ácido, álcali e sal concentrado (GAN et al, 2022). Gao et al (2022) elaborou uma nova estratégia para reciclagem de resíduos de polietileno tereftalato (PET) na preparação de produtos aerogel de alto valor.…”

Section: Reciclagemunclassified

Os 3Rs aplicados ao plástico

Medran Rangel,

Wickboldt Stark,

De Borba Pereira

et al. 2023

C&Trópico

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Os "3Rs" visam a minimizar o impacto ambiental do plástico, promovendo sua utilização sustentável e evitando seu acúmulo nos ecossistemas. A redução do plástico refere-se à diminuição da quantidade de plástico utilizado o que é importante porque diminui a demanda por novos plásticos, reduzindo assim a extração de recursos naturais e a quantidade de resíduos gerados. A reutilização envolve o uso repetido de produtos plásticos, em vez de descartá-los após o uso único. Isso pode ser feito por meio de diferentes métodos, como o uso de garrafas de água recarregáveis em vez de garrafas descartáveis, a utilização de sacolas de compras reutilizáveis e a adoção de recipientes plásticos duráveis. A reciclagem do plástico é um processo pelo qual os resíduos plásticos são coletados, separados, processados e transformados em novos produtos. A reciclagem ajuda a reduzir a quantidade de plástico que acaba em aterros sanitários, ou no meio ambiente, além de economizar energia e recursos naturais. Existem diferentes tipos de plástico, e cada um requer técnicas específicas de reciclagem. Portanto, é importante separar corretamente os resíduos plásticos para facilitar o processo de reciclagem. No geral, a redução, reutilização e reciclagem do plástico desempenham um papel essencial na promoção da sustentabilidade ambiental. A adoção dessas práticas, juntamente com o desenvolvimento contínuo de tecnologias ambientais, pode ajudar a mitigar os problemas relacionados ao plástico e a promover um futuro mais limpo e saudável. Esse trabalho tem como finalidade revisar na literatura os "3Rs" dos plásticos e suas principais aplicações as tecnologias ambientais. Palavras-chave: Redução. Reutilização. Reciclagem. Plásticos. Tecnologias Ambientais.

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Section: Reciclagemunclassified

Os 3Rs aplicados ao plástico

Medran Rangel,

Wickboldt Stark,

De Borba Pereira

et al. 2023

C&Trópico

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“…HDPE stands as one of the most extensively utilized polymers [13], with various studies emphasizing its potential for upcycling as a crucial strategy in mitigating environmental pollution. For instance, researchers have successfully synthesized an aerogel membrane by utilizing recycled polyethylene to address oil-water emulsions, employing methods such as swelling, solvent extraction, and freeze-drying [14]. Additionally, waste HDPE has been effectively transformed into oil sorbents using the extrusion-stretching technique, boasting both high selectivity and remarkable oil uptake capacity [15].…”

Section: Introductionmentioning

confidence: 99%

Prolonged Lifespan of Superhydrophobic Thin Films and Coatings Using Recycled Polyethylene

Saleem,

Moghal,

McKay

2024

Polymers

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High-density polyethylene (HDPE) waste poses a significant environmental challenge due to its non-biodegradable nature and the vast quantities generated annually. However, conventional recycling methods are energy-intensive and often yield low-quality products. Herein, HDPE waste is upcycled into anti-aging, superhydrophobic thin films suitable for outdoor applications. A two-layer spin-casting method combined with heating-induced crosslinking is utilized to produce an exceptionally rough superhydrophobic surface, featuring a root mean square (RMS) roughness of 50 nm, an average crest height of 222 nm, an average trough depth of −264 nm, and a contact angle (CA) of 148°. To assess durability, weathering tests were conducted, revealing the films’ susceptibility to degradation under harsh conditions. The films’ resistance to environmental factors is improved by incorporating a UV absorber, maintaining their hydrophobic properties and mechanical strength. Our research demonstrates a sustainable method for upcycling waste into high-performance, weather-resistant, superhydrophobic films.

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“…HDPE stands as one of the most extensively utilized polymers [11], with various studies emphasizing its potential for upcycling as a crucial strategy in mitigating environmental pollution. For instance, researchers have successfully synthesized an aerogel membrane by utilizing recycled polyethylene to address oil-water emulsions, employing methods such as swelling, solvent extraction, and freeze-drying [12]. Additionally, waste HDPE has been effectively transformed into oil sorbents using the extrusion-stretching technique, boasting both high selectivity and remarkable Disclaimer/Publisher's Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s).…”

Section: Introductionmentioning

confidence: 99%

Prolonged Lifespan of Superhydrophobic Thin Films and Coatings Using Recycled Polyethylene

Saleem,

Moghal,

McKay

2024

Preprint

View full text Add to dashboard Cite

High-density polyethylene (HDPE) waste poses a significant environmental challenge due to its non-biodegradable nature and the vast quantities generated annually. However, conventional recycling methods are energy-intensive and often yield low-quality products. Herein, HDPE waste is upcycled into anti-aging superhydrophobic thin films suitable for outdoor applications. A two-layer spin-casting method combined with heating-induced crosslinking is utilized to produce an exceptionally rough superhydrophobic surface, featuring a root mean square (RMS) roughness of 50 nm, an average crest height of 222 nm, an average trough depth of –264 nm, and a contact angle (CA) of 148°. To assess durability, weathering tests were conducted, revealing the films' susceptibility to degradation under harsh conditions. The films' resistance to environmental factors is improved by incorporating a UV absorber, maintaining their hydrophobic properties and mechanical strength. Our research demonstrates a sustainable method for upcycling waste into high-performance, weather-resistant superhydrophobic films.

show abstract

A recyclable and regenerated aerogel membrane derived from waste plastic for emulsion separation

Cited by 23 publications

References 33 publications

Os 3Rs aplicados ao plástico

Os 3Rs aplicados ao plástico

Prolonged Lifespan of Superhydrophobic Thin Films and Coatings Using Recycled Polyethylene

Prolonged Lifespan of Superhydrophobic Thin Films and Coatings Using Recycled Polyethylene

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