Polyurethane foams containing residues of petroleum industry catalysts as recoverable pH-sensitive sorbents for aqueous pesticides

Almeida, Marys Lene Braga; Ayres, Eliane; Moura, Flávia C.C.; Oréfice, Rodrigo Lambert

doi:10.1016/j.jhazmat.2017.12.033

Cited by 19 publications

(5 citation statements)

References 36 publications

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“…Regarding the XRD patterns, the presence of amorphous structures in the PU are also reported in the literature (Almeida et al, 2018;Almeida et al, 2020;Schio et al, 2019;Sadeghi et al, 2011).…”

Section: Discussionsupporting

confidence: 64%

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Removal of Cr(III) From Water By Polyurethane Foam Incorporated With Green Liquor Dregs Waste

Schoeler

Afonso

Delucis

et al. 2021

Preprint

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Water bodies contaminated by heavy metals cause a series of severe environmental and health issues. Chromium compounds stand out as one of the main contaminants since they are widely used by several industries. The low efficiency of effluent treatment facilities and the expensive sanitation procedures needed to remove metals from the water lead to serious concerns about the water quality in Brazil. In this study, a rigid polyurethane foam incorporated with green liquor dregs waste was prepared by the free expansion method. The foam composite and its isolated phases were evaluated for removing Cr(III) from water. The isolated dregs removed 81.93% of the Cr(III), which yielded a removal capacity of 135.45 mg·g-1. Whereas, the foam composite displayed Cr(III) removal percentage and capacity of 36.15% and 58.50 mg·g-1, respectively. Results suggests that the hybrid material may be considered for selective removal and extraction of Cr(III) from contaminated water.

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Section: Discussionsupporting

confidence: 64%

“…The degree of crystallinity of each compound is related to the three-dimensional shape of its respective molecules. In an XRD diffractogram, amorphous structures are represented by either absence or minor peaks, whereas crystalline domains are associated with prominent peaks (Almeida et al, 2018).…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Removal of Cr(III) From Water By Polyurethane Foam Incorporated With Green Liquor Dregs Waste

Schoeler

Afonso

Delucis

et al. 2021

Preprint

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“…Farage et al ( 2020 ) founded a pzc of 9.75 for a certain dregs waste, which was attributed to its high calcium content. Almeida et al ( 2018 ) reported a pzc of 6.05 for their PU foam, which was related to the generation of surface charges from protonation/deprotonation of N–H groups from urethane bonds, which were detected here by the FT-IR analysis.…”

Section: Discussionmentioning

confidence: 58%

SARS-CoV-2 removal with a polyurethane foam composite

Schoeler

Afonso

Demarco

et al. 2022

Environ Sci Pollut Res

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The pandemic of COVID-19 (SARS-CoV-2 disease) has been causing unprecedented health and economic impacts, alerting the world to the importance of basic sanitation and existing social inequalities. The risk of the spread and appearance of new diseases highlights the need for the removal of these pathogens through efficient techniques and materials. This study aimed to develop a polyurethane (PU) biofoam filled with dregs waste (leftover from the pulp and paper industry) for removal SARS-CoV-2 from the water. The biofoam was prepared by the free expansion method with the incorporation of 5wt% of dregs as a filler. For the removal assays, the all materials and its isolated phases were incubated for 24 h with an inactivated SARS-CoV-2 viral suspension. Then, the RNA was extracted and the viral load was quantified using the quantitative reverse transcription (RT-qPCR) technique. The biofoam (polyurethane/dregs) reached a great removal percentage of 91.55%, whereas the isolated dregs waste was 99.03%, commercial activated carbon was 99.64%, commercial activated carbon/polyurethane was 99.30%, and neat PU foam reached was 99.96% for this same property and without statistical difference. Those new materials endowed with low cost and high removal efficiency of SARS-CoV-2 as alternatives to conventional adsorbents. Graphical abstract

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“…Many recent studies report the latest advances in adsorption methods for removing organic contaminants, using low-cost materials, easy availability, and handling, with their characteristics or to be developed to become efficient in the removal processes. [36][37][38] In this context, Almeida et al 39 propose a reuse of this RC catalyst residue in water treatment. In their research, this RC was incorporated into a polyurethane matrix to produce a new composite for pesticide adsorption (atrazine, ATZ).…”

Section: Industrial Wastementioning

confidence: 99%

The Potentiality of Reuse Industrial Waste for Diverse Water Treatment -An Overview

Aguiar

Rodrigues

Bernardes

et al. 2023

SCE

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The proliferation of different pollutants in waters caused by anthropogenic and industrial activities has become a significant global concern, as they cause many problems, like severe health and environmental harm. Searching for green materials for water removal entirely and efficiently in this context is challenging. In this sense, innovative materials based on industrial waste become an incredible alternative, as they are waste, disposable incorrect in the environment, low-cost, and need to be adequately discharged. Many innovative materials based on industrial waste were performed in the literature, as these eco-friendly alternatives have great potential for many applications, including wastewater treatment. This overview presents various research that demonstrated different innovative materials based on industrial waste, their physicochemical properties, different properties, the adsorption removal, and other wastewater treatment reported based on different models. Based on the literature, we have also demonstrated that innovative materials based on industrial waste exhibit an incredible potential for the adsorption of various pollutants in water, indicating their promising solution of low-cost adsorption removal for wastewater treatment. Finally, this overview shows that these sustainable materials present significant potential for use in wastewater treatment.

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Polyurethane foams containing residues of petroleum industry catalysts as recoverable pH-sensitive sorbents for aqueous pesticides

Cited by 19 publications

References 36 publications

Removal of Cr(III) From Water By Polyurethane Foam Incorporated With Green Liquor Dregs Waste

Removal of Cr(III) From Water By Polyurethane Foam Incorporated With Green Liquor Dregs Waste

SARS-CoV-2 removal with a polyurethane foam composite

The Potentiality of Reuse Industrial Waste for Diverse Water Treatment -An Overview

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