Sustentabilidade no uso de poliuretano e reutilizações de aparas

Grotto, André Carlos; Hemkemeier, Marcelo; Rossato, Maiara Vizioli

doi:10.33448/rsd-v9i11.10685

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…Post-consumer polyurethane foams, mainly from mattresses, can be seen discarded in vacant properties throughout all major cities due to the lack of public action, inspection, and punishment. Since 2014, Brazil has produced more than 1 million m 3 of new polyurethane foam per day, which increases the need for studies on its recycling and reuse after its commercial life 7 . Although research on alternative applicability for new polyurethane is common 8,9 , there are still few viable proposals for using post-consumer foam.…”

Section: Introductionmentioning

confidence: 99%

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

2023

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To increase oil sorption, polyurethane foams were modified with MoS 2 , ZnO grafting and/or hexadecanoic acid coating. The foams were characterized by Scanning Electron Microscopy + Energy Dispersive X-ray Spectroscopy and Contact Angle techniques. Three sorption tests were performed.In tests with 100% water, the ZnO-PC modification showed a reduction of 35.7% in the seawater sorption when compared to Un-PC. In tests with 100% oil, there was a 29-fold increase in sorption (more than 2803%) of S46 lubricant oil when Un-PC performance was compared with ZnO-PC.In tests on the multicomponent systems, the lowest seawater sorption was 0.01 ± 0.00 g.g -1 (HA-PC), 0.08 ± 0.01 g.g -1 (Un-PC), and 1.39 ± 0.02 g.g -1 (Un-PC) for 20W40 engine oil, S46 lubricating oil, and diesel, respectively. The highest oil sorption in the systems was 41.34 ± 1.02 g.g -1 (HA-PC), 32.81 ± 0.31 g.g -1 (MoS 2 -PC), and 14.78 ± 0.27 g.g -1 (ZnO-PC) for diesel, S46 lubricating oil, and 20W40 engine oil, respectively. The reuse tests indicated that even after 10 cycles, the ZnO-PC foam kept its sorption capacity unchanged. Post-consumer foams proved to be effective in the sorption of different oils spilled into seawater, especially those grafted with ZnO rods or impregnated with MoS 2 .

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Section: Introductionmentioning

confidence: 99%

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

2023

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“…Brazil has produced over 1 million m³ of polyurethane (PU) foam daily (Grotto et al, 2020). Throughout Brazilian cities, it is common to see mattresses and upholstery discarded upon reaching the end of their useful life.…”

Section: Introductionmentioning

confidence: 99%

Influence of Temperature on the Recovery of Oils Spilled in Seawater Using Hydrophobized Post-Consumer Polyurethane Foams

Rocha,

Chiavone-Filho,

Oliveira

2023

BJPG

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Although economically vital, whether in cold Scandinavian or warm Caribbean waters, offshore oil exploration accounts for oil spills at sea. One of the mechanisms used for recovering spilled oil consists of using porous materials with high sorption capacity in the cleanup process. Post-consumer polyurethane foams (PC-PUFs) are highly porous polymers typically disposed by consumers in Brazilian cities. In this work, PC-PUFs obtained from discarded mattresses were modified superficially to promote hydrophobization and increase their selectivity for oils over water. The characterization showed foams with well-defined macro pores. Surfaces of MoS2-modified foams (MoS2-PC) showed an increase in seawater penetration rejection and oil attraction when compared to unmodified foams (Un-PC). Sorption tests simulating oil spillage at 1 °C, 12 °C, and 23 °C were conducted to verify the influence of temperature on oil recovery by PC-PUFs. Tests on the seawater-diesel system showed that diesel, a low-viscosity oil with slight viscosity variation with temperature reduction, penetrated both Un-PC and MoS2-PC foams easily, making the modifications on MoS2-PC irrelevant. In the seawater-S46 lubricant system, which had a more viscous oil and presented a substantial variation in viscosity with temperature reduction, there was greater difficulty in penetrating the Un-PC foam when compared to MoS2-PC, showing that the modifications were responsible for the increase in the recovery of more viscous oils spilled in seawater at different temperatures.

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“…Due to flaws in environmental legislation, it is common to find post--consumer mattresses irregularly discarded over the cities or even in sanitary landfills. Since 2014, Brazil has produced more than 1 million m³ of new polyurethane foam per day, which increases the need for studies on its reuse and recycling (Grotto et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

A Simple and Efficient Method of Post-Consumer Polyurethane Foam Coating for Oil Spill Sorption in Seawater

Rocha¹,

Chiavone‐Filho²,

Oliveira³

2022

Open Science Research III

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Oil spilled at sea is a problem that demands an efficient and economically feasible response. Another apparently unrelated issue is the amount of polyurethane foams accumulated in cities and landfills after their useful life. The present work relates these two problems so one can be used to mitigate the other. Post-consumer polyurethane foams were coated with hexadecanoic acid (HA) and tested for their ability to absorb different oils. The results of coated foams (HA-PC) were compared to unaltered foams (Un-PC). Scanning Electron Microscopy, Energy Dispersive Spectroscopy (SEM + EDS), and angle measurements were performed for the characterization of the studied foams. The sorption of oil from Un-PC to HA-PC increased 0.39% in the system with diesel, 226.88% in the system with lubricating oil S46, and 40.88% in the system with 20W40 engine oil. Coating with hexadecanoic acid proved to be a simple, low-cost, and effective surface modification to increase the oil sorption capacity of post-consumer foams.

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Sustentabilidade no uso de poliuretano e reutilizações de aparas

Cited by 3 publications

References 15 publications

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

Influence of Temperature on the Recovery of Oils Spilled in Seawater Using Hydrophobized Post-Consumer Polyurethane Foams

A Simple and Efficient Method of Post-Consumer Polyurethane Foam Coating for Oil Spill Sorption in Seawater

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