Microplastic particle trapping through microfluidic devices with different shaped pillars

Kitagawa, Atsuhide; Ota, Mirano; Watamura, Tomoaki; Tonooka, Taishi; Murai, Yuichi

doi:10.1016/j.ces.2022.118163

Cited by 8 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Separation procedures for MPs have been improved by utilizing additional techniques such as particle trapping. Using a microscope that was able to detect particles at high speeds, Kitagawa et al created a microfluidic platform to isolate and analyze PE MPs with diameters between 0.96 and 36 µm [ 69 ]. Pillars of four different sizes and shapes (circular, square, diamond, and triangular) were used in this study to compare the impact of shape and size on MP capture.…”

Section: Microfluidics As a Separation/recovery Tool For Mpsmentioning

confidence: 99%

Microfluidics as a Ray of Hope for Microplastic Pollution

2023

View full text Add to dashboard Cite

Microplastic (MP) pollution is rising at an alarming rate, imposing overwhelming problems for the ecosystem. The impact of MPs on life and environmental cycles has already reached a point of no return; yet global awareness of this issue and regulations regarding MP exposure could change this situation in favor of human health. Detection and separation methods for different MPs need to be deployed to achieve the goal of reversing the effect of MPs. Microfluidics is a well-established technology that enables to manipulate samples in microliter volumes in an unprecedented manner. Owing to its low cost, ease of operation, and high efficiency, microfluidics holds immense potential to tackle unmet challenges in MP. In this review, conventional MP detection and separation technologies are comprehensively reviewed, along with state-of-the-art examples of microfluidic platforms. In addition, we herein denote an insight into future directions for microfluidics and how this technology would provide a more efficient solution to potentially eradicate MP pollution.

show abstract

Section: Microfluidics As a Separation/recovery Tool For Mpsmentioning

confidence: 99%

Microfluidics as a Ray of Hope for Microplastic Pollution

2023

View full text Add to dashboard Cite

show abstract

“…It is non-intrusive and can be used for measuring the velocity distributions in fluid flow [ 28 ]. Kitagawa et al [ 29 ] reported microplastic particle tapping in microfluid devices using various shaped pillars. Using the finite element simulation, the intricate movement of trapping microspheres was studied via the particle trap array device [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Flow Characteristics between Tandem Flexible Structures Based on PIV: Substantial Applications for the Removal of Microplastics

Lee,

Sangtam,

Seong

et al. 2024

Micromachines

View full text Add to dashboard Cite

This study emphasizes the potential risk posed by microplastics, particularly in tap water. Numerous studies have reported the removal of microplastics, but the limitations in addressing this issue remain challenging. To tackle this problem, a new method is introduced using tandem flexible structures (FSs) for microplastic removal. The present study focused on understanding the hydrodynamic characteristics between FSs to utilize microplastic removal. This comprehension of fluid flow and FSs offers valuable insights for improving the efficiency of microplastic removal methods. Therefore, the optimal conditions for removing microplastics were experimentally investigated inside the FSs gap region. Based on the gap distance and height, the flow structures between FSs were investigated. A small secondary vortex structure that could trap particles from upstream was continuously maintained behind the upstream FSs under certain geometric conditions. It is shown that this vortex structure has an effective way of confining the particles from upstream. The persistency of a small secondary vortex was also evaluated. This study may be helpful to researchers working on microplastic removal and FSs with a tandem arrangement.

show abstract

“…Recently, microfluidic devices have been developed for the simple and easy detection of microplastics in aqueous samples. − Pollard et al developed a 3D-printed microfluidic resistive pulse sensor that enabled accurate quantification of microplastics from salt solution at a rapid rate (i.e., 1 mL/min) . Similarly, Zabihihesari et al showed a microfluidic device integrated with electrodes for efficient quantification of microplastics .…”

mentioning

confidence: 99%

Microfluidic Detection and Analysis of Microplastics Using Surface Nanodroplets

Faramarzi,

Jang,

et al. 2024

ACS Sens.

View full text Add to dashboard Cite

Detection of microplastics from water is crucial for various reasons, such as food safety monitoring, monitoring of the fate and transport of microplastics, and development of preventive measures for their occurrence. Currently, microplastics are detected by isolating them using filtration, separation by centrifugation, or membrane filtration, subsequently followed by analysis using well-established analytical methods, such as Raman spectroscopy. However, due to their variability in shape, color, size, and density, isolation using the conventional methods mentioned above is cumbersome and time-consuming. In this work, we show a surfacenanodroplet-decorated microfluidic device for isolation and analysis of small microplastics (diameter of 10 μm) from water. Surface nanodroplets are able to capture nearby microplastics as water flows through the microfluidic device. Using a model microplastic solution, we show that microplastics of various sizes and types can be captured and visualized by using optical and fluorescence microscopy. More importantly, as the surface nanodroplets are pinned on the microfluidic channel, the captured microplastics can also be analyzed using a Raman spectroscope, which enables both physical (i.e., size and shape) and chemical (i.e., type) characterization of microplastics at a single-particle level. The technique shown here can be used as a simple, fast, and economical detection method for small microplastics.

show abstract

Microplastic particle trapping through microfluidic devices with different shaped pillars

Cited by 8 publications

References 27 publications

Microfluidics as a Ray of Hope for Microplastic Pollution

Microfluidics as a Ray of Hope for Microplastic Pollution

Analysis of Flow Characteristics between Tandem Flexible Structures Based on PIV: Substantial Applications for the Removal of Microplastics

Microfluidic Detection and Analysis of Microplastics Using Surface Nanodroplets

Contact Info

Product

Resources

About