Cotransport of thallium(I) with polystyrene plastic particles in water-saturated porous media

Yao, Jinni; Wang, Hainan; Ma, Che; Cao, Yuliang; Chen, Wanpeng; Gu, Li; He, Qiang; Liu, Caihong; Xiong, Jingang; Huangfu, Xiaoliu; Liu, Hongxia

doi:10.1016/j.jhazmat.2021.126910

Cited by 31 publications

(10 citation statements)

References 77 publications

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“…28,37,78 In addition, MNPs in soils are likely to adsorb a variety of contaminants such as OPs, HMs, and ENPs, and affect their transport in soils. 7,103,104 As reviewed above, by changing their adsorption capacity toward these contaminants, photo-oxidation of MNPs might increase or reduce the mobility of contaminants. 28 The widely used DLVO theory that takes into consideration van der Waals forces and electrostatic interactions, is instrumental in predicting the mobility of charged ENPs in porous media.…”

Section: Stability In the Presence Of Naturalmentioning

confidence: 99%

“…Soil and sediment are not only a sink of MNPs, but may also represent potential sources of MNPs pollution in groundwater systems. ,, The transport and deposition process of MNPs in soil and sediment were commonly studied using porous media transport experiments and quartz crystal microbalance with dissipation (QCM-D). − Although no studies have reported this, photo-oxidation of MNPs may decrease the particle size and thus increase its migration into the pore throat of soil and sediment media. Photo-oxidation can also influence the mobility of MNPs in porous media by changing the surface properties of MNPs and hence the interaction between MNPs and soil media. ,, In addition, MNPs in soils are likely to adsorb a variety of contaminants such as OPs, HMs, and ENPs, and affect their transport in soils. ,, As reviewed above, by changing their adsorption capacity toward these contaminants, photo-oxidation of MNPs might increase or reduce the mobility of contaminants.…”

Section: Physical Behavior Of Mnps After Photo-oxidationmentioning

confidence: 99%

“…MNPs in soils are likely to adsorb a variety of contaminants such as OPs, HMs, and ENPs, and affect their transport in soils. ,, As reviewed above, by altering their adsorption capacity toward contaminants, photo-oxidation of MNPs might alter the mobility of contaminants in porous media. The effects may be distinct for two different cases: (i) MNPs and contaminants coexisted in aquatic media and cotransported, and (ii) MNPs were retained in soil media followed by the introduction of contaminants.…”

Section: Physical Behavior Of Mnps After Photo-oxidationmentioning

confidence: 99%

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Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Xu,

Ou,

van der Hoek

et al. 2024

Environ. Sci. Technol.

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Micro-and nanoplastics (MNPs) are attracting increasing attention due to their persistence and potential ecological risks. This review critically summarizes the effects of photo-oxidation on the physical, chemical, and biological behaviors of MNPs in aquatic and terrestrial environments. The core of this paper explores how photo-oxidation-induced surface property changes in MNPs affect their adsorption toward contaminants, the stability and mobility of MNPs in water and porous media, as well as the transport of pollutants such as organic pollutants (OPs) and heavy metals (HMs). It then reviews the photochemical processes of MNPs with coexisting constituents, highlighting critical factors affecting the photo-oxidation of MNPs, and the contribution of MNPs to the phototransformation of other contaminants. The distinct biological effects and mechanism of aged MNPs are pointed out, in terms of the toxicity to aquatic organisms, biofilm formation, planktonic microbial growth, and soil and sediment microbial community and function. Furthermore, the research gaps and perspectives are put forward, regarding the underlying interaction mechanisms of MNPs with coexisting natural constituents and pollutants under photo-oxidation conditions, the combined effects of photo-oxidation and natural constituents on the fate of MNPs, and the microbiological effect of photoaged MNPs, especially the biotransformation of pollutants.

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Section: Stability In the Presence Of Naturalmentioning

confidence: 99%

Section: Physical Behavior Of Mnps After Photo-oxidationmentioning

confidence: 99%

Section: Physical Behavior Of Mnps After Photo-oxidationmentioning

confidence: 99%

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Photo-oxidation of Micro- and Nanoplastics: Physical, Chemical, and Biological Effects in Environments

Xu,

Ou,

van der Hoek

et al. 2024

Environ. Sci. Technol.

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“…Tl(I) is thermodynamically more stable than Tl (III), so Tl(I) is much more abundant than Tl (III) in nature (Lan and Lin, 2005). Because Tl + ions and K + ions have similar ion radii and high affinity for sulfur ligands, they are easy to be absorbed, transmitted and accumulated by the organisms (Peter and Viraraghavan, 2005;Liu et al, 2021;Yang et al, 2022;Yao et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Thallium has both lithophilic and sulphurophilic properties and is widely present in silicate and sulfide minerals (Liu et al, 2018;Yao et al, 2022). Tl is often enriched in sulfide deposits as an associated mineral of lead, zinc, copper and other metals .…”

Section: Introductionmentioning

confidence: 99%

Sorption behavior and mechanisms of thallium to microplastics

et al. 2022

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Thallium (Tl) is a metal of high toxicity, and the problem of Tl pollution is being faced globally. However, environmental data on Tl are still scarce and its biogeochemical behaviors remain mostly unclear. Studies have revealed the potential transport of other heavy metal by microplastics (MPs), but there is no report on the interactions between Tl and MPs yet. Therefore, we studied the adsorption of Tl by the three most commonly detected MPs, i.e., polyethylene (PE), polystyrene (PS), and polypropylene (PP) in fresh and seawater. We considered the effects of particle size, pH and competitive cations on adsorption capacity. The results showed PS has the highest adsorption capacity for Tl which was mainly through surface complexation. PS showed the lowest crystallinity and had the most oxygen-containing functional groups among the studied MPs. The adsorption of Tl on PE and PP was dominated by physical adsorption. The adsorptions exhibited significant salinity and pH dependence. Dominant cations in seawater competed with Tl ions for adsorption sites on MPs. With the increase in pH, the deprotonation of the carboxyl functional groups on MPs was enhanced, which increased the effective adsorption sites and promoted the adsorption of Tl. However, the adsorption capacity of the studied MPs for Tl was much lower than the corresponding capacity of natural minerals (clay, iron and manganese oxides) previously reported. Therefore, MPs may not be the main factors affecting the environmental behavior of Tl. This study provides valuable information for the study of thallium’s environmental behavior and ecological risk assessment.

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