NPO Clean Ocean Ensemble Publishes 5th Column 'The Frontline of Microplastic Recovery Technology'
NPO Clean Ocean Ensemble has released its 5th column explaining the latest microplastic recovery technologies, the importance of prevention, and citizen science to solve the marine debris problem.
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- 📰 Published: April 15, 2026 at 21:10
- 🔍 Collected: April 15, 2026 at 12:31
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The research team of the NPO Clean Ocean Ensemble (Shodoshima-cho, Shozu-gun, Kagawa Prefecture, Co-representative Directors: Hiroki Egawa, Hidenori Tanaka), which works to solve the marine debris problem, has released the 5th installment of its serialized column, 'The Frontline of Microplastic Recovery Technology'.
In this column, along with introducing the latest recovery technologies targeting 'microplastics'—small plastic fragments that are difficult to recover—we explain the importance of preventive measures through our organization's river debris recovery device 'kawasemi' series and beach cleanups, as well as citizen-participatory surveys.
Microplastics recovered at a tidal flat in Aichi Prefecture
Column URL: https://cleanoceanensemble.com/columns/column5/
Overview of the Column
In previous columns, we have taken up the marine debris problem from multiple angles, such as plastic pellets (Part 1), the difference between primary and secondary microplastics (Part 2), plastic recycling (Part 3), and practical recovery using river debris recovery devices (Part 4).
In the 5th installment, we focus on the theme of 'How to recover microplastics that already exist in the environment'.
This column introduces recovery technologies that are attracting attention from three perspectives: physical methods, methods utilizing chemical reactions, and methods using functional materials.
Simultaneously, it indicates that combining the accumulation of field data and preventive measures with recovery technologies is important.
Highlight 1: Easily summarizing cutting-edge recovery technologies
We cover technologies being researched domestically and internationally, such as water-bridge ratchets, bubble barriers, electrocoagulation, self-dispersing micro-cleaners, cellulose nanofiber filters, and metal-organic frameworks (MOFs). We explained specialized content as understandably as possible for companies, local governments, and educators who are interested in the microplastic problem but want to know what kind of recovery technologies exist.
Microplastic recovery technologies. Left: Water-bridge ratchet mechanism, Right: Bubble barrier.
Highlight 2: Also introducing on-site practices of 'stopping before it enters the sea'
In addition to technologies for recovering microplastics diffused in the environment, we touch upon the importance of practices that 'stop before entering the sea'.
We position recovery at the river stage using our organization's river debris recovery device 'kawasemi' series and the suppression of secondary microplastics through beach cleanups as preventive and highly immediate measures.
Degraded marine debris. Highlight 3: Citizen science enhances the precision of countermeasures
Grasping where and how many microplastics exist is a prerequisite for utilizing technologies effectively.
We also touch on the importance of citizen-participatory surveys, standardization of recording, and data visualization, introducing that each person's observation and recording leads to the prioritization of countermeasures.
Citizen-participatory microplastic survey conducted with tools available at 100-yen shops.
Research Team Comment
To solve the microplastic problem, not only cutting-edge recovery technologies but also on-site practices to prevent leakage and surveys to understand the actual situation are indispensable.
We hope this column will serve as an entry point to think about the marine debris problem from the respective standpoints of research, the field, and citizens.
Future Developments
Clean Ocean Ensemble will continue to disseminate scientific and practical knowledge regarding the marine debris problem based on data obtained in the field and literature surveys.
Through the publication of columns and research results, we will accelerate initiatives that lead to the promotion of understanding and the social implementation of countermeasures.
Column URL: https://cleanoceanensemble.com/columns/column5/
Clean Ocean Ensemble is looking for partners to change the future together
Clean Ocean Ensemble continues to challenge every day, aiming to realize a world with zero marine debris.
To advance this initiative further, we need your power.
Please support and participate using the methods below.
- Support through donations and sponsorships
The donations received will be utilized for the installation of marine debris recovery devices, the development of data digitization tools, and the continuation of on-site activities.
We welcome participation as both one-time donations and monthly supporters.
▶ Details here: https://donation.cleanoceanensemble.com/
For companies, as a practice of CSR activities, logo placement on our organization's website, issuance of recovery support certificates, co-
In this column, along with introducing the latest recovery technologies targeting 'microplastics'—small plastic fragments that are difficult to recover—we explain the importance of preventive measures through our organization's river debris recovery device 'kawasemi' series and beach cleanups, as well as citizen-participatory surveys.
Microplastics recovered at a tidal flat in Aichi Prefecture
Column URL: https://cleanoceanensemble.com/columns/column5/
Overview of the Column
In previous columns, we have taken up the marine debris problem from multiple angles, such as plastic pellets (Part 1), the difference between primary and secondary microplastics (Part 2), plastic recycling (Part 3), and practical recovery using river debris recovery devices (Part 4).
In the 5th installment, we focus on the theme of 'How to recover microplastics that already exist in the environment'.
This column introduces recovery technologies that are attracting attention from three perspectives: physical methods, methods utilizing chemical reactions, and methods using functional materials.
Simultaneously, it indicates that combining the accumulation of field data and preventive measures with recovery technologies is important.
Highlight 1: Easily summarizing cutting-edge recovery technologies
We cover technologies being researched domestically and internationally, such as water-bridge ratchets, bubble barriers, electrocoagulation, self-dispersing micro-cleaners, cellulose nanofiber filters, and metal-organic frameworks (MOFs). We explained specialized content as understandably as possible for companies, local governments, and educators who are interested in the microplastic problem but want to know what kind of recovery technologies exist.
Microplastic recovery technologies. Left: Water-bridge ratchet mechanism, Right: Bubble barrier.
Highlight 2: Also introducing on-site practices of 'stopping before it enters the sea'
In addition to technologies for recovering microplastics diffused in the environment, we touch upon the importance of practices that 'stop before entering the sea'.
We position recovery at the river stage using our organization's river debris recovery device 'kawasemi' series and the suppression of secondary microplastics through beach cleanups as preventive and highly immediate measures.
Degraded marine debris. Highlight 3: Citizen science enhances the precision of countermeasures
Grasping where and how many microplastics exist is a prerequisite for utilizing technologies effectively.
We also touch on the importance of citizen-participatory surveys, standardization of recording, and data visualization, introducing that each person's observation and recording leads to the prioritization of countermeasures.
Citizen-participatory microplastic survey conducted with tools available at 100-yen shops.
Research Team Comment
To solve the microplastic problem, not only cutting-edge recovery technologies but also on-site practices to prevent leakage and surveys to understand the actual situation are indispensable.
We hope this column will serve as an entry point to think about the marine debris problem from the respective standpoints of research, the field, and citizens.
Future Developments
Clean Ocean Ensemble will continue to disseminate scientific and practical knowledge regarding the marine debris problem based on data obtained in the field and literature surveys.
Through the publication of columns and research results, we will accelerate initiatives that lead to the promotion of understanding and the social implementation of countermeasures.
Column URL: https://cleanoceanensemble.com/columns/column5/
Clean Ocean Ensemble is looking for partners to change the future together
Clean Ocean Ensemble continues to challenge every day, aiming to realize a world with zero marine debris.
To advance this initiative further, we need your power.
Please support and participate using the methods below.
- Support through donations and sponsorships
The donations received will be utilized for the installation of marine debris recovery devices, the development of data digitization tools, and the continuation of on-site activities.
We welcome participation as both one-time donations and monthly supporters.
▶ Details here: https://donation.cleanoceanensemble.com/
For companies, as a practice of CSR activities, logo placement on our organization's website, issuance of recovery support certificates, co-