Effect of Tween 20 and linear alkylbenzene sulfonate on microplastic coagulation

Oliveira, Thaynara Lorrayne de; Terán, Francisco Javier Cuba; Cuba, Renata Medici Frayne; Freitas, Fernanda Ferreira

doi:10.5004/dwt.2023.29444

Cited by 4 publications

(2 citation statements)

References 34 publications

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“…The suspension was prepared using a concentration of MP particles of 200 mg/L 1 [14] in ultrapure water. In the beginning of the experiments, 10 mg/L of SDBS surfactant were added to ensure wettability and dispersion of the particles.…”

Section: Preparation Of Mp Suspensionmentioning

confidence: 99%

“…While previous studies have examined the effectiveness of electrocoagulation and coagulation with metal salts for microplastic removal, the focus has primarily been on pristine microplastics (PMP) without considering the impact of aging or the presence of surfactants [13][14][15]. Aged microplastics (AMP) may undergo physical and chemical changes over time, potentially affecting their behavior during the electrocoagulation process.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Linear Alkylbenzene Sulfonate and Polyoxyethylene Sorbitan Monolaurate Surfactants on Pristine and Aged Microplastic Removal by Electrocoagulation

Teran,

Oliveira,

Cuba

2024

J. Ecol. Eng.

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Various types of pollutants are present in wastewaters, which can combine and form even more toxic components or interfere with the treatments used for purification. Among emerging contaminants are microplastics and surfactants, which coexist in different types of wastewaters. This study aimed to assess the effects of the anionic surfactant linear alkylbenzene sulfonate (LAS) and the nonionic surfactant polyoxyethylene sorbitan monolaurate (Tween 20) on the removal of microplastics from pristine and aged glitter PVC surfaces using electrocoagulation with aluminum electrodes. To avoid interference from other substances, a benchtop reactor operating in batch mode with particles suspended in ultrapure water was developed for the experiments. The analysis methods employed included counting with the aid of a magnifying glass, gravimetry, zeta potential measurements, and scanning electron microscopy. The results revealed that the addition of surfactants led to a reduction in the removal efficiency of plastic microparticles. The lowest removal percentages were observed at a concentration of 100 ppm, and the inclusion of Tween 20 resulted in a decrease of 23% for pristine microplastics and 45% for aged microplastics. In contrast, the addition of LAS led to a decrease of 6% for pristine microplastics and 24% for aged microplastics. Therefore, the decrease in removal efficiency was more pronounced for degraded microplastics in both the Tween 20 and LAS experiments. Comparing the reduction in removal efficiency between the two types of surfactants, it can be observed that the nonionic surfactant (Tween 20) had a greater impact on the removal of microplastics by electrocoagulation.

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Section: Preparation Of Mp Suspensionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Linear Alkylbenzene Sulfonate and Polyoxyethylene Sorbitan Monolaurate Surfactants on Pristine and Aged Microplastic Removal by Electrocoagulation

Teran,

Oliveira,

Cuba

2024

J. Ecol. Eng.

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Effects and applications of surfactants on the release, removal, fate, and transport of microplastics in aquatic ecosystem: a review

Phasukarratchai

2023

Environ Sci Pollut Res

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Removal of Microplastic From Liquid Medium By Dissolved Air Flotation

Silva,

Terán,

Cuba

et al. 2024

RGSA

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Objective: The objective of this study is to verify the removal of MPs from the liquid medium through the application of the dissolved air flotation (FAD) technique. Theoretical Framework: FAD is a technology used to remove low-density solid particles from a liquid medium, with the introduction of air bubbles to the system, which aims to reduce the density of plastic particles and increase their rise speed. Method: In the flotest, coagulant dosage tests and FAD operational conditions were carried out. The suspension analyzed consisted of 2 L of water supply, 400 mg/L of PVC MPs, 5 mL/L of Tween-20 surfactant, aluminum sulfate coagulant in dosages of 2.5 to 6.0 mg/L and Turbidity was the parameter used to verify the removal of MPs. Results and Discussion: The optimal results obtained for coagulant dosage were 3.01 mg/L and the operational conditions of FAD, recirculation rate of 10% and flotation time of 15 min. Research Implications: The FAD technique used in the research is capable of efficiently removing MPs from liquid media above 90%. Originality/Value: This study contributes by using a technique that has a high PM removal rate, produces easy-to-treat sludge and is one of the most used in WWTP.

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Effect of Tween 20 and linear alkylbenzene sulfonate on microplastic coagulation

Cited by 4 publications

References 34 publications

Effects of Linear Alkylbenzene Sulfonate and Polyoxyethylene Sorbitan Monolaurate Surfactants on Pristine and Aged Microplastic Removal by Electrocoagulation

Effects of Linear Alkylbenzene Sulfonate and Polyoxyethylene Sorbitan Monolaurate Surfactants on Pristine and Aged Microplastic Removal by Electrocoagulation

Effects and applications of surfactants on the release, removal, fate, and transport of microplastics in aquatic ecosystem: a review

Removal of Microplastic From Liquid Medium By Dissolved Air Flotation

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