Sorption behaviors of crude oil on polyethylene microplastics in seawater and digestive tract under simulated real-world conditions

Shan, Jiajia; Wang, Jian; Zhan, Jingjing; Liu, Lifen; Wu, Fengchang; Wang, Xue

doi:10.1016/j.chemosphere.2020.127225

Cited by 32 publications

(14 citation statements)

References 46 publications

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“…According to previous studies (Bakir et al 2014;Razanajatovo et al 2018;Li et al 2019;Liu et al 2019;Ma et al 2019;Zuo et al 2019;Shan et al 2020), the amount of triclosan adsorbed onto microplastics was calculated by Equation 1.…”

Section: Discussionmentioning

confidence: 99%

“…In brief, the same Erlenmeyer flasks were filled with 10 mg of pollutant‐sorbed microplastics and 10 mL of 15.5‐mM simulated gut fluid to simulate the digestive tract environment of marine fish, and to investigate the impact of gut surfactant on desorption of triclosan from microplastics. Sodium taurocholate, a bile salt derived from cholesterol, was used to simulate the gut fluids of marine fish (Bakir et al 2014; Bakir et al 2016; Shan et al 2020). Accordingly, the simulated gut fluid was prepared by dissolving sodium taurocholate in ultrapure water and the pH was adjusted at 4 ± 0.1 by dropwise addition of 0.1 M of NaOH and HCl (Bakir et al 2014).…”

Section: Methodsmentioning

confidence: 99%

“…According to previous studies (Bakir et al 2014; Razanajatovo et al 2018; Li et al 2019; Liu et al 2019; Ma et al 2019; Zuo et al 2019; Shan et al 2020), the amount of triclosan adsorbed onto microplastics was calculated by Equation 1.

normalq = \frac{false(c_{0} - c_{e} false) normalv}{m}

where c 0 (mg/L) is the initial concentration of triclosan; c e (mg/L) is the equilibrium aqueous concentration of triclosan; q (µg/g) is the amount of triclosan adsorbed onto microplastics; v (mL) is the solute volume; and m (g) is the mass of microplastics.…”

Section: Methodsmentioning

confidence: 99%

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Adsorption and Desorption of Triclosan on Biodegradable Polyhydroxybutyrate Microplastics

Tong

Zhong

et al. 2020

Enviro Toxic and Chemistry

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Biodegradable plastics have been increasingly used as a solution to the problem of plastic pollution in recent years. However, there are few studies on the negative effects of biodegradable microplastics. Triclosan, a widely used disinfectant, is a highly toxic substance. In the present study, the adsorption and desorption processes of triclosan on a type of biodegradable plastics, polyhydroxybutyrate (PHB), were investigated and also compared with one conventional plastic type, polyethylene. The adsorption equilibrium quantities of polyethylene and PHB were 3431.85 and 9442.27 μg/g, respectively. The adsorption rate and equilibrium adsorption capacity of triclosan on PHB are much higher than on polyethylene. Physical adsorption of triclosan on PHB and polyethylene microplastics may play a dominant role in this process. The desorption hysteresis indices are all less than zero; this indicates that triclosan is easily released from PHB and polyethylene microplastics under physiological conditions. Our results indicate that biodegradable PHB microplastics are stronger carriers for triclosan than the conventional polyethylene microplastics in the aquatic environment.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…According to previous studies (Bakir et al 2014; Razanajatovo et al 2018; Li et al 2019; Liu et al 2019; Ma et al 2019; Zuo et al 2019; Shan et al 2020), the amount of triclosan adsorbed onto microplastics was calculated by Equation 1.

normalq = \frac{false(c_{0} - c_{e} false) normalv}{m}

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption and Desorption of Triclosan on Biodegradable Polyhydroxybutyrate Microplastics

Tong

Zhong

et al. 2020

Enviro Toxic and Chemistry

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“…[ 17,18 ] Other properties inherent to hydrophobic and oleophilic materials can be mentioned, such as mechanical stability, biodegradability, cost–benefit ratio, and oil reuse potential and recovery, surface area, and porosity (pore size and volume). [ 16,18–20 ] Shan et al [ 21 ] mentioned that MPs and oily components had a strong interaction due to the particle size (<5 mm), high hydrophobicity, stability, and MPs mobility.…”

Section: Introductionmentioning

confidence: 99%

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

Martins

Zanini

Botelho

et al. 2021

Polymer Engineering & Sci

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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.

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“…The Langmuir isotherm model assumes that there is no interaction force between the adsorbed molecules and only monolayer adsorption can be formed on the MP surface, while the Freundlich isotherm model is an empirical equation with no assumptions. Some researchers reported that the adsorption process of MPs for heavy metals can be described by the Langmuir isotherm model (Tang et al, 2020;Wang T. et al, 2020;Zhang S. et al, 2020), while some others declared that the Freundlich isotherm model was better (Fang et al, 2019;Purwiyanto et al, 2020;Shan et al, 2020). In the Freundlich isotherm model, the adsorption process is a multilayer adsorption that occurs on a heterogeneous surface, and pollutant molecules will first occupy high-energy adsorption sites and then diffuse to low-energy adsorption sites (Abdurahman et al, 2020;Wang T. et al, 2020).…”

Section: Adsorption Kinetics and Isotherms Of Heavy Metals On Mpsmentioning

confidence: 99%

Interactions Between Microplastics and Heavy Metals in Aquatic Environments: A Review

et al. 2021

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Microplastics (MPs), tiny particles broken down from larger pieces of plastics, have accumulated everywhere on the earth. As an inert carbon stream in aquatic environment, they have been reported as carriers for heavy metals and exhibit diverse interactive effects. However, these interactions are still poorly understood, especially mechanisms driving these interactions and how they pose risks on living organisms. In this mini review, a bibliometric analysis in this field was conducted and then the mechanisms driving these interactions were examined, especially emphasizing the important roles of microorganisms on the interactions. Their combined toxic effects and the potential hazards to human health were also discussed. Finally, the future research directions in this field were suggested. This review summarized the recent research progress in this field and highlighted the essential roles of the microbes on the interactions between MPs and heavy metals with the hope to promote more studies to unveil action mechanisms and reduce/eliminate the risks associated with MP presence.

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Sorption behaviors of crude oil on polyethylene microplastics in seawater and digestive tract under simulated real-world conditions

Cited by 32 publications

References 46 publications

Adsorption and Desorption of Triclosan on Biodegradable Polyhydroxybutyrate Microplastics

Adsorption and Desorption of Triclosan on Biodegradable Polyhydroxybutyrate Microplastics

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

Interactions Between Microplastics and Heavy Metals in Aquatic Environments: A Review

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