Friday, July 12, 2024

Claybens: A Sustainable Revolution in Addressing PFAS Pollution through Innovative Brick Manufacturing

The escalating threat of PFAS (per- and polyfluoroalkyl substances) pollution has garnered global attention, precipitating urgent discussions and actions to mitigate its pervasive environmental and health ramifications. PFAS, recognized for their persistent and bioaccumulative characteristics, have infiltrated water sources, contaminated soils, and triggered a burgeoning public health crisis. These synthetic compounds, omnipresent in everyday items like non-stick cookware and firefighting foam, have earned the ominous moniker “forever chemicals” due to their resistance to natural degradation, resulting in soil and water contamination.

Addressing PFAS pollution is a critical imperative due to its far-reaching consequences, posing direct threats to human health and necessitating long-term remediation efforts. While ongoing initiatives strive to regulate PFAS and develop remediation methods, the complex challenge persists due to their persistence and widespread presence. However, an innovative breakthrough led by Emy Bensdorp, the visionary founder of Claybens, is changing the narrative by ingeniously transforming PFAS-contaminated soil into sustainable bricks.

PFAS contaminated clay soil 4
Converting PFAS-Contaminated Soil into Sustainable Bricks

The PFAS Predicament: A Global Menace

PFAS contamination poses a direct threat to human health, with exposure linked to a range of issues, including cancer and developmental disorders. The contamination of drinking water sources further exacerbates the risk, creating a widespread and severe public health crisis. Compounding the issue, PFAS are notorious for their persistence in the environment, leading to long-term remediation challenges. The bioaccumulation of these chemicals in the food chain amplifies the risks to both human and wildlife.

Ongoing efforts to regulate PFAS and develop effective remediation strategies have encountered significant hurdles. The persistent nature of these chemicals, coupled with their widespread distribution, demands innovative solutions that go beyond conventional approaches. Enter Emy Bensdorp, whose groundbreaking work is offering a ray of hope in the battle against PFAS pollution.

Emy Bensdorp’s Ingenious Solution: From Contamination to Construction

Emy Bensdorp, the trailblazer behind Claybens, has pioneered a revolutionary approach to eliminate PFAS chemicals from contaminated clay soil by converting it into bricks. This innovative solution involves subjecting PFAS-contaminated clay soil to the standard brick manufacturing process, harnessing kiln temperatures ranging from 900 to 1,200 degrees Celsius. The intense heat generated during this process effectively breaks down and annihilates PFAS chemicals, resulting in bricks completely devoid of any detectable traces of these harmful substances.

What sets Bensdorp’s method apart is its ingenious use of kiln heat to trigger a chemical reaction that disassembles the fluorine atom chains constituting PFAS. This departure from traditional remediation methods, grounded in academic research, proves to be a game-changer. Instead of the common approach of short-term heating at temperatures of 1,000 to 1,400 degrees, Bensdorp’s method involves the sustained high temperatures of the brick manufacturing process, ensuring a thorough and effective removal of PFAS from the soil.

PFAS contaminated clay soil 2
The bricks are made through standard manufacturing processes

The Scientific Marvel: Defluorination and Beyond

Emy Bensdorp’s groundbreaking method hinges on the science of defluorination, a process activated by the intense heat of a kiln. This chemical reaction effectively dismantles the chains of fluorine atoms that compose PFAS, rendering them harmless. The seamless integration of this process into the existing brick manufacturing workflow requires minimal adjustments to infrastructure.

The method unfolds in several meticulously orchestrated steps:

1. Soil Collection:

  • The process commences with the gathering of clay soil contaminated with PFAS from areas with a history of industrial activity, improper waste management, or heavy firefighting foam usage.

2. Traditional Brick Making:

  • The standard brick manufacturing process involves shaping the clay into bricks, followed by firing them in a kiln. This includes mixing the clay with other materials, molding it into brick shapes, and allowing the bricks to dry before firing.

3. Intense Heat Treatment:

  • The critical element of Bensdorp’s innovation involves subjecting the contaminated clay soil to high temperatures in a kiln, reaching between 900 and 1,200 degrees Celsius. These extreme temperatures play a pivotal role in breaking down PFAS chemicals.

4. Defluorination:

  • The high kiln temperatures initiate a chemical reaction known as defluorination. This process effectively dismantles the long chains of fluorine atoms that make up PFAS. The notoriously resilient carbon-fluorine bond, challenging to break, succumbs to the sustained high temperatures in the kiln.

5. PFAS Elimination:

  • As the clay soil undergoes exposure to these elevated temperatures during the brick firing process, PFAS chemicals are completely eradicated. By the end of the process, there are no detectable traces of PFAS remaining in the final product – the bricks.

6. Safe and Clean End Product:

  • The resulting bricks are entirely free from PFAS contaminants and can be safely used in construction and various other applications without posing any risk to the environment or human health. The removal of PFAS makes these bricks a safe and sustainable building material.

Environmental Impact and Sustainability: A Paradigm Shift

One of the pivotal aspects of this innovation lies in its environmental impact. PFAS pollution is a severe concern, particularly in areas where industrial activities, improper waste disposal, or heavy firefighting foam usage have led to high levels of PFAS in the soil. Conventional solutions for dealing with contaminated soil, such as storing it in depots, do not eliminate the problem but merely relocate it. Emy Bensdorp’s approach presents a sustainable solution to address PFAS pollution at its source, ensuring genuinely cleaned soil.

Scalability and Practicality: The Power of Bricks

While theoretically possible to use contaminated soil for various ceramic products, bricks emerge as the most practical choice. The scalability of brick production, the familiarity of existing manufacturing processes, and the fact that no significant changes are needed in infrastructure make it a highly promising solution. Bensdorp’s approach capitalizes on the efficiency and convenience of existing brick production while addressing a significant environmental issue.

The choice of bricks as the end product is not arbitrary; it is a strategic decision rooted in practicality. Brick production, a well-established industry, offers a scalable solution that aligns with the demands of the construction sector. The familiarity of the manufacturing process and the minimal need for infrastructural changes enhance the feasibility and practicality of implementing Bensdorp’s method on a larger scale.

PFAS contaminated clay soil 3
The firing process eradicates the chemicals

A Solution for the Future: From Vision to Reality

Emy Bensdorp’s work transcends theoretical innovation; it has successfully transformed heavily contaminated clay soils into clean bricks, each marked with indicators denoting its origin and the amount of PFAS removed. This practical application is a pivotal step toward solving the PFAS pollution problem, moving beyond theoretical promise to tangible results.

Presently, contaminated soils often find themselves relegated to depots, covered with sand in an attempt to contain the issue. Notable locations grappling with such contamination include the land around Amsterdam’s Schiphol Airport, where a firefighting foam accident resulted in exceptionally high PFAS concentrations in the soil. Another afflicted site is in the city of Doetinchem in the province of Gelderland, where 1300 barrels of PFAS firefighting foam have leaked into the soil over many years. B

ensdorp’s innovative approach transforms these problematic clay soils into bricks of various colors, marked to indicate their place of origin and the amount of PFAS removed.

The Next Frontier: Scaling Up for Impact

Looking ahead, Emy Bensdorp envisions demonstrating the scalability and practicality of her groundbreaking idea by producing 50,000 bricks from one site. This ambitious undertaking serves as a critical step in confirming that the process can work on an industrial scale and is a viable solution for addressing PFAS contamination. The testing of emissions during this larger-scale production is equally essential, ensuring that the entire process aligns with stringent environmental standards and remains ecologically friendly.


Emy Bensdorp’s innovation represents more than a scientific breakthrough; it embodies a beacon of hope for a sustainable future. By seamlessly integrating her defluorination approach into the existing brick manufacturing process, Bensdorp not only cleans contaminated soil but also contributes to the sustainability of the construction industry. The bricks produced through her method serve as tangible evidence that environmental challenges can be addressed creatively, providing a solution that is both effective and practical.

As the world grapples with the consequences of PFAS pollution, Emy Bensdorp’s pioneering work offers a glimpse into a future where environmental problems are not merely contained but actively transformed into assets for sustainable development. The journey from contaminated soil to clean bricks is a testament to the power of innovation in reshaping our approach to environmental challenges. Claybens is not just a startup; it is a catalyst for change, illustrating that the answers to some of our most pressing problems may lie in the very substances causing them. As we forge ahead, Bensdorp’s work stands as a testament to the transformative potential of science and ingenuity in building a sustainable and resilient future.


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