Using Adhesives to Capture Microplastics from Water,ACS ES&T Engineering

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Using Adhesives to Capture Microplastics from Water
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-10-19 , DOI: 10.1021/acsestengg.1c00272
P. Takunda Chazovachii ₁ , Julie M. Rieland ₂ , Violet V. Sheffey ₂ , Timothy M. E. Jugovic ₁ , Paul M. Zimmerman ₁ , Omolola Eniola-Adefeso ₃ , Brian J. Love _{2,

4} , Anne J. McNeil _{1,

2}

Affiliation

Microplastic pollution is omnipresent─having been found in our land, air, food, and water. Over the last two decades, both identifying microplastics and sleuthing their sources has been a major research focus. Moving forward, the next goal should be remediation. Although removing microplastics from the environment is impractical, developing methods that prevent their release into the environment is essential. Herein, we report an approach for removing microplastics from water using a pressure-sensitive adhesive. Specifically, we demonstrate that shaking zirconium silicate beads coated with poly(2-ethylhexyl acrylate) in aqueous suspensions containing polystyrene microplastics (10 μm) can remove up to 99% of the microplastics within 5 min. We show that the adhesive molar mass (ranging from 93–950 kg/mol) is invariant with respect to removal efficiency at 5 min, as quantified by flow cytometry. Preliminary results suggest these adhesives can bind other microplastics as well, including nonpolar polymers (e.g., polyethylene, micronized rubber) and polar polymers (e.g., nylon, polyethylene terephthalate). Overall, this proof-of-concept study demonstrates a promising approach for remediating microplastics from aqueous suspensions using adhesives.

中文翻译：

使用粘合剂从水中捕获微塑料

微塑料污染无处不在——在我们的土地、空气、食物和水中都有发现。在过去的二十年中，识别微塑料和侦查其来源一直是一个主要的研究重点。展望未来，下一个目标应该是修复。虽然从环境中去除微塑料是不切实际的，但开发防止它们释放到环境中的方法是必不可少的。在此，我们报告了一种使用压敏粘合剂从水中去除微塑料的方法。具体来说，我们证明了在含有聚苯乙烯微塑料 (10 μm) 的水悬浮液中摇动涂有聚（2-乙基己基丙烯酸酯）的硅酸锆珠可以在 5 分钟内去除高达 99% 的微塑料。我们表明，通过流式细胞术量化，粘合剂摩尔质量（范围为 93-950 kg/mol）相对于 5 分钟时的去除效率是不变的。初步结果表明，这些粘合剂也可以粘合其他微塑料，包括非极性聚合物（例如聚乙烯、微粉化橡胶）和极性聚合物（例如尼龙、聚对苯二甲酸乙二醇酯）。总体而言，这项概念验证研究展示了一种使用粘合剂从水悬浮液中修复微塑料的有前途的方法。

更新日期：2021-12-10

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