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The research group Water Engineering Innovation Photo: Aarhus University
The research group Water Engineering Innovation, led by Associate Professor Zongsu Wei, works to develop water purification technologies, especially in connection with PFAS. The group collaborates in this project with the research group Robotics from the Department of Mechanical and Production Engineering.
24.01.2024

Artificial intelligence to help remove PFAS

A new research project links some of Denmark's leading researchers in PFAS remediation with artificial intelligence. The goal is to develop and optimise a new form of wastewater and drinking water treatment technology using artificial intelligence for zero-pollution goals.

In a new research and development project, researchers from Aarhus University aim to develop a new technology that can collect and break down perpetual chemicals (PFAS) in one step in a purification process that can be connected directly to drinking water wells and treatment plants.

The project has received funding from the Villum Foundation of DKK 3 million, and it will combine newly developed treatment technology from some of Denmark's leading PFAS remediation researchers with artificial intelligence that can ensure optimal remediation.

A new research project links some of Denmark's leading researchers in PFAS remediation with artificial intelligence. The goal is to develop and optimise a new form of wastewater and drinking water treatment technology using artificial intelligence for zero-pollution goals.

In a new research and development project, researchers from Aarhus University aim to develop a new technology that can collect and break down perpetual chemicals (PFAS) in one step in a purification process that can be connected directly to drinking water wells and treatment plants.

The project has received funding from the Villum Foundation of DKK 3 million, and it will combine newly developed treatment technology from some of Denmark's leading PFAS remediation researchers with artificial intelligence that can ensure optimal remediation.

"In the project, we will design, construct and test a new, automated degradation technology for continuous PFAS degradation. We’re also going to set up an open database to identify significant and limiting factors for degradation reactions with PFAS molecules in the reactor," says Associate Professor Xuping Zhang from the Department of Mechanical and Production Engineering at Aarhus University, who is co-heading the project in collaboration with Associate Professor Zongsu Wei from the Department of Biological and Chemical Engineering.

Ever since the 1940s, PFAS (per- and polyfluoroalkyl substances) have been used in a myriad of products, ranging from raincoats and building materials to furniture, fire extinguishers, solar panels, saucepans, packaging and paints.

However, PFAS have proven to have a number of harmful effects on humans and the environment, and unfortunately the substances are very difficult to break down in nature. As a result, the substances continuously accumulate in humans, animals, and elsewhere in nature.

In Denmark, PFAS have been found in drinking water wells, in surface foam on the sea, in the soil at sites for fire-fighting drills, and in many places elsewhere, for example in organic eggs. It is not possible to remove PFAS from everything, but work is underway to remove PFAS from the groundwater in drinking water wells that have been contaminated with the substances.

Currently, the most common method to filter drinking water for PFAS is via an active carbon filter, an ion-exchange filter, or by using a specially designed membrane. All of these possibilities filter PFAS from the water, but they do not destroy the PFAS. The filters are therefore all temporary, as they have to be sent for incineration to destroy the accumulated PFAS, or they end in landfills.

The project is called 'Machine Learning to Enhance PFAS Degradation in Flow Reactor', and it aims to design and develop an optimal and permanent solution for drinking water wells and treatment plants in Denmark that constantly captures and breaks down PFAS, while also monitoring itself.

"We need to be creative and think outside the box. I see many advantages in linking artificial intelligence with several different water treatment technologies, but integrating intelligence-based optimisation is no easy task. It requires strong synergy between machine learning and chemical engineering, but the perspectives are huge," says Associate Professor Zongsu Wei from the Department of Biological and Chemical Engineering at Aarhus University.

More information:
PFAS Aarhuis University
Source:

Aarhus University
Department of Biological and Chemical Engineering
Department of Mechanical and Production Engineering

26.09.2023

ECHA: More than 5 600 comments on PFAS restriction proposal

More than 4 400 organisations, companies and individuals submitted comments and information on the proposal to restrict per- and polyfluoroalkyl substances (PFAS) in the European Economic Area.

At the end of the consultation on 25 September, ECHA had received more than 5 600 comments from more than 4 400 organisations, companies and individuals.

The comments will be checked by ECHA's scientific committees for Risk Assessment (RAC) and Socio-Economic Analysis (SEAC), and those providing relevant evidence-based information will be considered in the opinion making process.

The five countries who prepared the initial proposal will also review the consultation input and may update their initial proposal based on it.

Many comments submitted during the consultation are already published on ECHA’s website. Information indicated as confidential by the consultee is not made public. Comments received very close to the deadline are currently being processed and will be published shortly.

More than 4 400 organisations, companies and individuals submitted comments and information on the proposal to restrict per- and polyfluoroalkyl substances (PFAS) in the European Economic Area.

At the end of the consultation on 25 September, ECHA had received more than 5 600 comments from more than 4 400 organisations, companies and individuals.

The comments will be checked by ECHA's scientific committees for Risk Assessment (RAC) and Socio-Economic Analysis (SEAC), and those providing relevant evidence-based information will be considered in the opinion making process.

The five countries who prepared the initial proposal will also review the consultation input and may update their initial proposal based on it.

Many comments submitted during the consultation are already published on ECHA’s website. Information indicated as confidential by the consultee is not made public. Comments received very close to the deadline are currently being processed and will be published shortly.

Next steps
RAC and SEAC are evaluating the proposed restriction and considering the relevant information received through the consultation. The committees develop their independent, scientific opinions over a series of meetings, where draft opinions are discussed. Attention is given to all aspects and impacted sectors.

ECHA will deliver the final opinions to the European Commission in the shortest possible timeframe, while ensuring proper scrutiny by the scientific committees. Once the committees adopt their opinions, they will be communicated to the public.

The Commission, together with the EU Member States, will decide on the restriction.

Background
The restriction proposal was prepared by authorities in Denmark, Germany, the Netherlands, Norway and Sweden. It was submitted to ECHA on 13 January 2023. It aims to reduce PFAS emissions into the environment and make products and processes safer for people. The six-month consultation ran from 22 March to 25 September 2023.

Further information
•    Consultation comments
•    Restriction on the manufacture, placing on the market and use of PFAS
•    Topical page on PFAS
•    REACH restriction process

More information:
ECHA PFAS
Source:

ECHA

20.07.2023

VDMA Textile Machinery: Planned PFAS ban threatens important textile machine components

The EU's planned ban on the entire group of per- and polyfluoroalkyl substances (PFAS) would endanger many industrial processes, states VDMA Textile Machinery. Textile manufacturing would be affected twice – by missing important chemicals for technical textile production and by the lack of indispensable textile machine components. The latter would affect the whole supply chain from textile machinery manufacturers and its suppliers to the textile industry in the EU.

The EU's planned ban on the entire group of per- and polyfluoroalkyl substances (PFAS) would endanger many industrial processes, states VDMA Textile Machinery. Textile manufacturing would be affected twice – by missing important chemicals for technical textile production and by the lack of indispensable textile machine components. The latter would affect the whole supply chain from textile machinery manufacturers and its suppliers to the textile industry in the EU.

Solid PFAS parts are widely used in textile machinery production, especially where extreme conditions prevail. Verena Thies, Managing Shareholder Thies GmbH & Co. KG, explains: “Our textile dyeing machines are world leaders and set standards in efficiency and sustainability. They work under pressure at temperatures of up to 140° C using highly acidic, highly basic and/or oxidative or even reductive chemicals. This is precisely why PFAS is needed, for example, in seals and rings, flaps as well as valves for a long-lasting and high-quality machine concept – because there are no alternatives with qualitatively equivalent properties. In addition, PTFE semi-finished products enable a sliding and gentle contact with the textile fabric in ecologically important techniques in the transformation of textile wet finishing."

PTFE and also FKM are fluoropolymers (fluoroplastics and fluoroelastomers), a group within the broad PFAS range of about 10,000 substances which would be banned for production, use and sale in the EU. They are high-tech materials, and as so-called "polymers of low concern" are not a danger to the environment, according to the OECD. Furthermore, these components are installed inside a machine and exchanged or disposed of properly. PFAS such as PTFE and FKM must be exempted from the ban, demands the VDMA in its position paper.

"In this way, the association also supports the approach taken in Great Britain. With the 10,000 substances, everything is lumped together, although the various PFAS groups are very different," warns Dr Sarah Brückner, Head of VDMA Environmental Affairs and Sustainability. "We should take our cue from the UK and look at the substance groups in a differentiated way."
Apart from several types of dyeing machines, PFAS components are indispensable in textile drying machines (e.g., conveyor dryers, tumblers and stenters) and damping machines. They are also used in fully automatic chemical dispensing systems and pressure vessels for thermochemical treatment of textile recycling material, heat recovery systems and wastewater treatment technology. This means that a lot of machines needed for a sustainable textile production would be affected by the PFAS ban.

VDMA Textile Machinery will take part in the ongoing EU public consultation. The association will describe indispensable key functionalities and conditions of use in the textile machinery sector as well as the consequences for the companies and the customers in the EU if the ban is imposed. The consultation ends on September 25, 2023, and VDMA urged its members affected by the planned restriction to participate in the consultation at an early stage. This is the only way to ensure that the broad scope of the mechanical and plant engineering sector is represented.

More information:
VDMA Textilmaschinen PFAS
Source:

VDMA e. V.
Textile Machinery

 

22.03.2023

ECHA seeks input on proposed PFAS restriction

The European Chemicals Agency invites interested parties to send in scientific and technical information on the manufacture, placing on the market and use of per- and polyfluoroalkyl substances (PFAS) by 25 September 2023.

The six-month consultation on the restriction proposal, prepared by the Danish, German, Dutch, Norwegian and Swedish authorities, opens on 22 March 2023 and closes on 25 September 2023 (23:59 Helsinki time).

The consultation is to give anyone with information on PFAS the opportunity to have their say. Of particular interest is information relevant to the risks, socio-economic aspects and alternative substances.

ECHA’s scientific committees for Risk Assessment (RAC) and for Socio-Economic Analysis (SEAC) will use the consultation input to evaluate the proposed restriction and form an opinion on it.

The European Chemicals Agency invites interested parties to send in scientific and technical information on the manufacture, placing on the market and use of per- and polyfluoroalkyl substances (PFAS) by 25 September 2023.

The six-month consultation on the restriction proposal, prepared by the Danish, German, Dutch, Norwegian and Swedish authorities, opens on 22 March 2023 and closes on 25 September 2023 (23:59 Helsinki time).

The consultation is to give anyone with information on PFAS the opportunity to have their say. Of particular interest is information relevant to the risks, socio-economic aspects and alternative substances.

ECHA’s scientific committees for Risk Assessment (RAC) and for Socio-Economic Analysis (SEAC) will use the consultation input to evaluate the proposed restriction and form an opinion on it.

An online information session will be held on 5 April. During the session, experts from ECHA and the five national authorities will explain the restriction process, the content of the proposal and how to participate in the consultation. They will also respond to questions from the participants.

The five national authorities submitted the universal proposal to restrict PFAS to ECHA on 13 January. The European Commission, together with the EU Member States, will eventually decide on the potential restriction based on the proposal and the committees’ opinion.

More information:
ECHA PFAS
Source:

ECHA

23.02.2023

Milliken and Company commits to eliminating PFAS

Milliken’s Textile Business plans to eliminate all PFAS-containing materials from its portfolio by December 31, 2022.
The company announced a commitment to eliminate all per- and polyfluoroalkyl substances, commonly referred to as PFAS, from the company’s textile finishes and fibers portfolio.

“Sustainability is a core value of our company, and we are and have always been on a quest for continuous improvement,” shares Halsey Cook, president and CEO for Milliken & Company. “As part of our sustainability journey, we are committed to finding innovative and meaningful solutions to reduce our environmental impact. While we do not always begin our journey with perfect information, we strive to make adjustments as new information comes to light.”

“As a values-driven company, we’re always evaluating the needs and demands of the markets we serve. Our promise to our customers is to engineer the highest-quality protective and performance textiles, and our purpose is to positively impact the world for generations,” said Chad McAllister, executive vice president, Milliken & Company, and president, Milliken’s Textile Business.

Milliken’s Textile Business plans to eliminate all PFAS-containing materials from its portfolio by December 31, 2022.
The company announced a commitment to eliminate all per- and polyfluoroalkyl substances, commonly referred to as PFAS, from the company’s textile finishes and fibers portfolio.

“Sustainability is a core value of our company, and we are and have always been on a quest for continuous improvement,” shares Halsey Cook, president and CEO for Milliken & Company. “As part of our sustainability journey, we are committed to finding innovative and meaningful solutions to reduce our environmental impact. While we do not always begin our journey with perfect information, we strive to make adjustments as new information comes to light.”

“As a values-driven company, we’re always evaluating the needs and demands of the markets we serve. Our promise to our customers is to engineer the highest-quality protective and performance textiles, and our purpose is to positively impact the world for generations,” said Chad McAllister, executive vice president, Milliken & Company, and president, Milliken’s Textile Business.

More information:
PFAS Milliken
Source:

Milliken and Company

23.02.2023

New online tool maps PFAS hotspots in businesses ahead of EU ban

The EU's plans to ban PFAS (per- and polyfluoroalkyl substances) chemicals will have an immense impact on companies globally. Perhaps even more than expected, as many manufacturers are unaware that they may have PFAS chemicals in their product line. A new online tool, launched today by NGO ChemSec, will help to solve this problem.

Just a couple of weeks after the big PFAS restriction proposal in the EU was published, ChemSec launches the PFAS Guide, which helps companies investigate the use of persistent chemicals within their businesses. The main feature of the PFAS Guide is the searchable database uncovering different PFAS uses and functions. The online tool also provides guidance on different aspects of the phase-out process from regulation and investigation all the way to testing and supply chain communication.

The EU's plans to ban PFAS (per- and polyfluoroalkyl substances) chemicals will have an immense impact on companies globally. Perhaps even more than expected, as many manufacturers are unaware that they may have PFAS chemicals in their product line. A new online tool, launched today by NGO ChemSec, will help to solve this problem.

Just a couple of weeks after the big PFAS restriction proposal in the EU was published, ChemSec launches the PFAS Guide, which helps companies investigate the use of persistent chemicals within their businesses. The main feature of the PFAS Guide is the searchable database uncovering different PFAS uses and functions. The online tool also provides guidance on different aspects of the phase-out process from regulation and investigation all the way to testing and supply chain communication.

“We’ve been working to support companies in chemical substitution for a long time, and the last few years we’ve gathered a group of companies working specifically on the PFAS issue. The discussions with them made it clear to us that a main challenge is understanding if and where in your business you may have PFAS”, says Dr. Anna Lennquist, Project Leader for the PFAS Guide.

PFAS are a source of growing concern
It has been estimated that 95 percent of all manufactured goods rely on some form of industrial chemical process. A large share of the chemicals used in these processes have been linked to adverse impacts on human health and the environment. PFAS are a clear example of this problem. PFAS have been manufactured and used in products such as make-up, non-stick pans, water- and greaseproof textiles, food-packaging materials, and firefighting foam since the 1950s and are still used in a wide variety of products around the world today.

But they are also substances of growing concern due to their problematic properties. Per- and polyfluorinated alkyl substances (PFAS) are a group of several thousand man-made chemicals that accumulate in the environment and cause health impacts for generations. They are, for example, linked to cancer, lung disease, diabetes, reproductive abnormalities and learning difficulties. Since PFAS do not degrade, these “forever chemicals” are now so widespread that is safe to say that every single human being on the planet have detectable levels of these toxic chemicals in their blood.

A couple of weeks ago, a big proposal to restrict PFAS in the EU was published. The five EU Member States behind the proposal submitted a broad restriction proposal that clearly shows the need for the industry to put all resources into phasing out all PFAS substances.

More information:
PFAS ChemSec chemicals
Source:

ChemSec

08.02.2023

ECHA publishes PFAS restriction proposal

The details of the proposed restriction of around 10 000 per- and polyfluoroalkyl substances (PFASs) are now available on ECHA’s website. ECHA’s scientific committees will now start evaluating the proposal in terms of the risks to people and the environment, and the impacts on society.

The proposal was prepared by authorities in Denmark, Germany, the Netherlands, Norway and Sweden and submitted to ECHA on 13 January 2023. It aims to reduce PFAS emissions into the environment and make products and processes safer for people.

All PFASs in the scope of the proposal are very persistent in the environment. If their releases are not minimised, people, plants and animals will be increasingly exposed, and without a restriction, such levels will be reached that have negative effects on people’s health and the environment. The authorities estimate that around 4.4 million tonnes of PFASs would end up in the environment over the next 30 years unless action is taken.

The details of the proposed restriction of around 10 000 per- and polyfluoroalkyl substances (PFASs) are now available on ECHA’s website. ECHA’s scientific committees will now start evaluating the proposal in terms of the risks to people and the environment, and the impacts on society.

The proposal was prepared by authorities in Denmark, Germany, the Netherlands, Norway and Sweden and submitted to ECHA on 13 January 2023. It aims to reduce PFAS emissions into the environment and make products and processes safer for people.

All PFASs in the scope of the proposal are very persistent in the environment. If their releases are not minimised, people, plants and animals will be increasingly exposed, and without a restriction, such levels will be reached that have negative effects on people’s health and the environment. The authorities estimate that around 4.4 million tonnes of PFASs would end up in the environment over the next 30 years unless action is taken.

Peter van der Zandt, ECHA’s Director for Risk Assessment said: “This landmark proposal by the five authorities supports the ambitions of the EU’s Chemicals Strategy and the Zero Pollution action plan. Now, our scientific committees will start their evaluation and opinion forming. While the evaluation of such a broad proposal with thousands of substances, and many uses, will be challenging, we are ready.”

Next steps
ECHA’s scientific committees for Risk Assessment (RAC) and for Socio-Economic Analysis (SEAC) will check that the proposal meets the legal requirements of REACH in their meetings in March 2023. If it does, the committees will begin their scientific evaluation of the proposal. A six-month consultation is planned to start on 22 March 2023.

RAC will form an opinion on whether the proposed restriction is appropriate in reducing the risks to people’s health and the environment, while SEAC’s opinion will be on the socio-economic impacts, i.e. benefits and costs to society, associated with the proposal. Both committees form their opinions based on the information in the restriction proposal and the comments received during consultations. The committees also consider advice from the Enforcement Forum on the enforceability of the proposed restriction. Once the opinions are adopted, they will be sent to the European Commission who, together with the EU Member States, will then decide on the potential restriction.

An online information session will be organised on 5 April 2023 to explain the restriction process and to help those interested in participating in the consultation.

More information:
ECHA PFAS polyfluoroalkyl
Source:

European Chemicals Agency

24.09.2021

50 companies have joined ChemSec’s PFAS Movement

More and more brands are actively speaking up against the use of PFAS chemicals in products and supply chains. ChemSec’s corporate initiative the PFAS Movement was started in 2020, with the aim of creating a network of companies that would like to see PFAS chemicals regulated more efficiently. As of September 2021, 50 companies have joined the movement.

PFAS, short for per- and polyfluoroalkyl substances, is a chemical family consisting of almost 5,000 industrially produced chemicals. In manufacturing, PFAS are favored for their durability and well-functioning properties. They provide features such as non-stick, water repellency and anti-grease to many types of everyday products, including cosmetics, food packaging, frying pans and clothes, just to name a few.

Lately, more and more reports have been suggesting that PFAS are a serious problem. Human epidemiological studies have found associations between PFAS exposure and a number of health disorders.

More and more brands are actively speaking up against the use of PFAS chemicals in products and supply chains. ChemSec’s corporate initiative the PFAS Movement was started in 2020, with the aim of creating a network of companies that would like to see PFAS chemicals regulated more efficiently. As of September 2021, 50 companies have joined the movement.

PFAS, short for per- and polyfluoroalkyl substances, is a chemical family consisting of almost 5,000 industrially produced chemicals. In manufacturing, PFAS are favored for their durability and well-functioning properties. They provide features such as non-stick, water repellency and anti-grease to many types of everyday products, including cosmetics, food packaging, frying pans and clothes, just to name a few.

Lately, more and more reports have been suggesting that PFAS are a serious problem. Human epidemiological studies have found associations between PFAS exposure and a number of health disorders.

One of the biggest challenges connected to PFAS is that, with very few exceptions, they are perfectly legal to use. This means that the brands and retailers who want to stop them from being used as ingredients in their products have very limited ways of communicating this in the global supply chain. As long as there is not a restriction in place, suppliers will continue to use these very effective chemicals in manufacturing. That’s why companies act together with a unified voice, like in the case of ChemSec’s PFAS Movement.

Source:

ChemSec

Logo Chemsec
Logo Chemsec
07.02.2020

H&M, Coop Denmark join NGO ChemSec

Fashion giant H&M Group and Danish retailer Coop are joining chemical expert NGO ChemSec’s call to action to end the use of harmful PFAS chemicals in products and supply chains.
This commitment comes on the same day as award-winning actor Mark Ruffalo and director Todd Haynes address the EU Parliament to speak about the true story that inspired the duo’s latest film Dark Waters, in which an environmental attorney takes on chemical giant DuPont and exposes decades of PFAS pollution.
ChemSec’s corporate PFAS initiative includes:

Fashion giant H&M Group and Danish retailer Coop are joining chemical expert NGO ChemSec’s call to action to end the use of harmful PFAS chemicals in products and supply chains.
This commitment comes on the same day as award-winning actor Mark Ruffalo and director Todd Haynes address the EU Parliament to speak about the true story that inspired the duo’s latest film Dark Waters, in which an environmental attorney takes on chemical giant DuPont and exposes decades of PFAS pollution.
ChemSec’s corporate PFAS initiative includes:

  • A call on policy makers to regulate PFAS efficiently, without the possibility for manufacturers to simply swap one PFAS chemical for an unregulated “cousin”.
  • A call on the chemical industry to put money into innovation and develop safer alternatives to PFAS for all kinds of products.
  • A recognition that PFAS are a major health and environmental problem.
  • A serious commitment to end all non-essential PFAS uses in products and supply chains.
  • A call on all other brands to join this commitment and work towards a phase-out of PFAS in all kinds of consumer products.

The single biggest problem with PFAS is that, with very few exceptions, they are perfectly legal to use. This means that the brands and retailers who want to stop it from being used as ingredients in their products have very limited ways of communicating this in the global supply chain. As long as there is not a restriction in place, suppliers will continue to use these very effective chemicals in manufacturing.  

PFAS, short for per- and polyfluoroalkyl substances, is a chemical family consisting of almost 5,000 industrially produced chemicals. In manufacturing, PFAS are favoured for their durability and well-functioning properties; they provide properties such as non-stick, water repellence and anti-grease to many types of products, including cosmetics, food packaging, frying pans, outdoor gear and firefighting foam.
The industrial use of PFAS has been so prevalent in the last decades that today 99% of every human, including foetuses, have measurable levels of PFAS in their bloodstreams.   
What is worrying is that human epidemiological studies have found associations between PFAS exposure and a number of health disorders, including various cancers, lowered birth weights and negative effects on the immune system.

 

More information:
H&M ChemSec Coop Denmark
Source:

Chemsec