From PET bottle waste to enzyme support for removal of estrogens from wastewaters

Kijeńska-Gawrońska, Ewa; Zdarta, Jakub; Thabit, Hani Shaker A.M.; Jesionowski, Teofil; Swieszkowski, Wojciech

doi:10.1016/j.eti.2024.103555

Cited by 1 publication

(1 citation statement)

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“…Chen et al demonstrated the efficacy of superhydrophobic and superoleophilic rPET NFMs for separating water-in-oil emulsions . Furthermore, many studies utilized rPET membranes as substrates, modifying them for various other purposes. − However, these previous efforts have predominantly focused on using PET bottles to produce electrospun NFMs, overlooking the potential of discarded polyester textiles as alternative polymer sources.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofibrous Membranes from Discarded Polyester Textiles for Oil Sorption

Ko,

Hinestroza,

Uyar

2024

ACS Appl. Polym. Mater.

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The massive amounts of textile waste generated every year emphasize an urgent need for innovative strategies to repurpose discarded textiles into valuable items. We report on the fabrication of electrospun nanofibrous membranes (NFMs) utilizing discarded polyester textiles and assessing their oil sorption capabilities. We used Spandex/polyester t-shirt and polyester t-shirt sources for the NFMs. We also used a discarded poly(ethylene terephthalate) (PET) bottle to produce NFMs. The resulting NFMs were labeled as SP t-shirt NFM, PET t-shirt NFM, and PET bottle NFM. We investigated the thermal and chemical properties of the NFMs through TGA, DSC, FTIR, and XPS analyses. The SP t-shirt NFM exhibited the highest water contact angle (WCA) of 134 ± 1°, while the WCA of the PET t-shirt NFM and PET bottle NFM were 123 ± 1 and 122 ± 1°, respectively. The SP t-shirt NFM also exhibited the highest oil sorption capacity. The sorption capacities of the SP t-shirt NFM for vegetable oil, pump oil, silicone oil, and hexane were determined to be 21.4 ± 3.3, 24.1 ± 1.0, 23.7 ± 1.3, and 15.0 ± 0.5 g g −1 , respectively. This superior oil sorption capability of the SP t-shirt NFM is attributed to the presence of Spandex traces in the nanofibers, providing a more hydrophobic content than PET, thereby enhancing oil sorption activities. The SP t-shirt NFM exhibited satisfactory reusability as oil sorbents over five cycles and demonstrated effective adsorption of pump oil from water. This study provides valuable insights into upcycling approaches for repurposing discarded textiles into functional materials, with potential applications in addressing oil pollution problems.

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