Details

Autor(en) / Beteiligte

• Martins, Larissa S.
• Zanini, Noelle C.
• Botelho, Alexandre L. S.
• Mulinari, Daniella R.

Titel

Envelopes with microplastics generated from recycled plastic bags for crude oil sorption

Ist Teil von

• Polymer engineering and science, 2021-07, Vol.61 (7), p.2055-2065

Ort / Verlag

Hoboken, USA: John Wiley & Sons, Inc

Erscheinungsjahr

2021

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Oil spill accidents in marine environments and the lack of disposal of post‐consumer plastic are environmental problems worldwide. This study presents a sustainable alternative for both issues through envelopes filled with microplastics (MPs) from recycled bags for the sorption of spilled crude oil. Through particle size analysis by three different sieves (4, 9, and 20 mesh), different MP sizes were characterized by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET), density, contact angle (CA), and Fourier‐transform infrared spectroscopy (FTIR). According to their sizes, the MPs were distributed in envelopes and submitted to crude oil sorption capacity and efficiency evaluation. Three MP particle sizes were obtained (from the largest to the smallest, according to the sieve mesh, MP4, MP9, and MP20). SEM images of samples exhibited irregular and porous surfaces, and MP4 had the smallest pore size (8.6 μm). BET showed that MP4 had the highest surface area (0.074 m2/g). The CA > 90° exposed that all samples were hydrophobic. FTIR spectrum demonstrated that the samples from the recycled bags were made of high density polyethylene (HDPE). The MP4 envelopes also had the best crude oil sorption results in capacity and efficiency (1.73 g/g and 68%, respectively), being a promising recycled sorbent in crude oil spillage applications. Microplastic envelopes (MPs) were obtained by recycling of plastic bags. Size effect of the MPs on the crude oil sorption was evaluated. MPs presented a hydrophobic nature and a macroporous surface.