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Related Experiment Video

Updated: Jun 10, 2026

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Enhanced microplastic removal using a mini-hydrocyclone with microbubbles.

Jeongmin Seo¹, Hyejeong Kim²

¹School of Mechanical Engineering, Korea University, Seoul 02841, South Korea.

|November 13, 2025

Summary

This summary is machine-generated.

Mini-hydrocyclones (MHCs) enhanced with microbubbles (MBs) effectively remove microplastics (MPs) from water. This study optimized MHC-MB performance, improving MP separation efficiency by up to 34% for cleaner aquatic environments.

Keywords:

Density-based separation Hydrocyclone Microbubbles Microplastics

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Sampling and Identification of Microplastics in Groundwater

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Published on: November 7, 2025

Area of Science:

Environmental Engineering
Water Treatment Technologies
Nanotechnology

Background:

Microplastics (MPs) contaminate aquatic environments, posing risks via toxic adsorption and food chain entry.
Effective MP removal strategies are crucial for environmental and human health protection.
Mini-hydrocyclones (MHCs) show potential for MP separation but struggle with neutrally buoyant MPs.

Purpose of the Study:

To investigate the performance of microbubble-assisted mini-hydrocyclones (MHCs) for microplastic (MP) separation.
To understand the interaction mechanisms between microbubbles (MBs) and MPs within MHCs.
To optimize MHC operating conditions for enhanced MP removal efficiency.

Main Methods:

Utilized high-speed visualization to observe MB-MP interactions and air core dynamics in MHCs.
Tested MHC performance under varying flow rates, MB concentrations, and surface charge conditions.
Evaluated separation efficiency for both single-density and mixed-density MPs, including microfibers.

Main Results:

Microbubble attachment to MPs was observed, significantly enhancing separation efficiency by up to 34% under optimal conditions (300 mL/min, 55,500 MBs/mL).
Optimal MB concentrations and flow rates were identified; excessive MBs or low flow disrupted internal flow and reduced efficiency.
Successful density-based separation of mixed MPs was achieved, demonstrating the system's versatility.

Conclusions:

Microbubble-assisted MHCs offer a promising, efficient method for microplastic removal from water.
The study provides crucial insights into MB-MP interactions and defines practical operating parameters for MHC systems.
This technology presents a scalable solution for decentralized water treatment applications, addressing microplastic pollution.