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Case study – Underground tanks

Antara Groupe presentation on lubricant oxidation prevention at STLE 2025

Case study – Underground tanks: fuel decontamination using Antara® mobile skids

"Regain control over the quality of stored diesel fuel, without entering the tank, without hydrocleaning, without stopping operations."

Customer context

An operator uses several 30–35 m³ underground tanks to supply trucks and machinery. For several months now:

  • Repeated clogging of filters
  • Injector failures
  • Power losses
  • Operational shutdowns
  • Overuse of filters

The suspected cause: increasing contamination of underground tanks and distribution systems.

Underground tanks
Underground fuel tanks
Fuel station with underground tanks.
Analysis & issues

A series of analyses is carried out on the distribution outlet and in the underground tanks.

  • High presence of particles and debris
  • Presence of free water in the tank (risk of corrosion, bacteria, and fuel degradation)
  • ISO 4406 code before treatment: 23/22/20 (excluding truck injection specifications)
  • Distribution already contaminated when leaving the nozzles
Sampling
Diesel sampling from underground tank
Sampling from underground tanks.
Patch BEFORE
Patch analyzes fuel before treatment
Fuel patch – pre-treatment.
Patch AFTER
Patch analyzes fuel after treatment
Fuel patch – after treatment.
Fuel distribution

The distribution system is also contaminated. When it leaves the nozzle, the fuel still contains particles, which cause filter clogging and injector failure.

  • Dedicated in-line filtration on distribution
  • Recirculation via mobile skid, without stopping operation
  • Reduction in fuel quality-related incidents

Result: clean and stable distribution.

Fuel distribution
Fuel distribution for machinery
Distribution supplied by underground tanks.
Objective

Restore fuel quality to meet injection requirements, without draining tanks, without heavy hydrocleaning, without entering tanks, without stopping operations.

Solution chosen

Antara® mobile skid deployed to successively decontaminate tanks and secure distribution.

  • Hybris®: high-efficiency filtration of fine particles
  • Calista®: water separation/filtration in a single pass (free water)
  • Closed-loop recirculation without human input
  • 58 min of treatment on the most critical tank
Antara® mobile skid
Antara mobile fuel decontamination skid
Antara® mobile skid.
Results
  • ISO 4406 code after treatment: 17/15/12 (injection class)
  • Elimination of off-peaks and stabilization of fuel quality
  • No fuel drain
  • No site downtime
  • Traitement total < 0,5 journée
Comparison of solutions

Comparison of available options for treating pollution in underground tanks:

Criterion Heavy hydrocleaning Competing mobile solutions Antara® mobile skid
Draining fuel Yes Often No
Cessation of operations Yes Sometimes No
Human entry into tanks Yes (high risk) Limited No
Open water treatment + particles Partial Variable Complete (Hybris® + Calista®)
Final quality ISO 4406 Not guaranteed Variable 17/15/12

Antara Groupe

Sharing, structuring, contributing

“Innovative Tools for a Better Prevention of Organic Fluids Oxidation and Varnish Build-Up”

As a natural extension of its long-standing commitment to industrial R&D, knowledge transmission, and technical excellence, Antara Groupe is now recognized as an Affiliate Member of the International Council for Machinery Lubrication (ICML).

This affiliation is not about validating our expertise - it has already been recognized and proven in the field by major industry leaders - but about delivering impact.
We now contribute our expertise to the technical discussions taking place within ICML, with the clear intent to help shape and advance global standards in our field.

Our teams operate in highly demanding industrial environments where equipment reliability, advanced maintenance strategies, and long-term performance are key operational priorities.
It is this applied expertise that we now bring to the structured framework offered by ICML.

PREVENT – TREAT – IMPROVE

Learn more about ICML: www.lubecouncil.org

www.antara-groupe.com

#ICML #AntaraGroupe #Innovation #Tribology #Lubricants #ICMLaffiliatemember #Oilinnovation #Lubrificationcertification #Lubrificationresearchanddevelopment 

Antara Groupe presentation on lubricant oxidation prevention at STLE 2025
Antara Groupe presentation on lubricant oxidation prevention at STLE 2025

Anticipating and Preventing Oxidation & Varnish Build-Up

We are proud to announce that Dr. Marie Roucan, Head of Research & Testing Laboratory at Antara Groupe, will present her latest research at the 79th STLE Annual Meeting & Exhibition, taking place May 18-22, 2025 in Atlanta, GA.

Her presentation, entitled:

“Innovative Tools for a Better Prevention of Organic Fluids Oxidation and Varnish Build-Up”

will explore cutting-edge strategies in oil degradation monitoring, oxidation prevention, and lubricant treatment. This includes digitalization, nanocomponent design, EPR techniques, and the capture of free radicals - all crucial in the fight against system failures caused by lubricant degradation.

Monitoring & Treating Oxidation in Lubricants

Oxidation is a major cause of lubricant degradation, leading to soluble and insoluble contaminants and varnish formation. Traditional detection methods often fall short due to the complexity and diversity of degradation species.

At Antara Groupe, we are developing a new generation of nanocomponents (NCs) capable of targeting unstable entities like oxygenated molecules and radicals formed during oxidation.

How?
By coupling nanocomponents with Electron Paramagnetic Resonance (EPR) techniques, including spin trapping, we’re able to identify and monitor key degradation products — turning them into predictive quality indicators.

Why?
This dual capability of monitoring and treatment gives our customers a unique advantage:

  • Prevent failure,

  • Extend oil life,

  • Improve system reliability.

This research is featured in our marketing poster:

#STLE2025 #AntaraGroupe #Innovation #Tribology #Lubricants #OxidationPrevention #Digitalization #EPR #VarnishControl #OilMonitoring #Nanocomponents #Freeradical

Monitoring of dissolved (PPM) and relative (aW) humidity 

IMG-20250404-WA0009

Addressing Industrial Challenges

In industries like fuel, mining, manufacturing, and aerospace, hydraulic systems are essential-but face a major challenge: oil contamination. Pollutants like water, gases, particles, and oxidation by-products degrade hydraulic fluids, leading to higher maintenance costs, equipment damage, and downtime.
Traditional methods (filters, centrifuges, coalescers) provide only partial solutions and require frequent servicing.
To address this, Antara Groupe developed ARTHEMIS-a cutting-edge oil purification system that integrates four advanced treatments into one, offering a more complete and efficient solution.

A new way to dehydrate and treat oil for optimal cleanliness and performance at low temperature (38°c).

100% designed and manufactured in France, ARTHEMIS ensures continuous purification with unmatched efficiency, significantly extending oil life, enhancing machine reliability, and reducing environmental impact.

Breakthrough Innovations: Vacuum Dehydration & Emulsion Breaking

Water is one of the most harmful contaminants in hydraulic and lubrication systems. Unlike conventional methods, ARTHEMIS uses vacuum dehydration to remove both free and dissolved water. By operating under vacuum, it lowers the boiling point of water, extracting moisture at low temperatures while preserving oil additives and viscosity.

Water contamination often leads to the formation of stable emulsions, which traditional filtration methods fail to break. ARTHEMIS is designed to separate even the strongest emulsions, ensuring oil is fully dehydrated and restored to optimal performance levels. This process prevents
corrosion, cavitation, and wear, extending the lifespan of hydraulic components.

A System Designed to Maximize Oil and Equipment Lifespan

✔ No need for draining – Oils are continuously purified and recycled

✔ Preserves additives and oil’s physico-chemical properties

✔ Removes emulsions and varnish to prevent long-term damage.

✔ Reduces operational costs and extends machinery lifespan

A Cost-Effective & Eco-Friendly Solution

By addressing all contamination types in a single continuous process, ARTHEMIS reduces maintenance needs, minimizes oil replacement frequency, and lowers waste production, contributing to sustainable industrial practices.

« With ARTHEMIS, Antara Groupe sets a new benchmark in hydraulic oil purification, delivering a powerful, efficient, and long-term solution to oil contamination challenges. »

ARTHEMIS: A Unique System with 4 Treatments in 1

1 system = 4 simultaneous treatments

  • Eliminates 100% of free water and up to 96% of dissolved water (from 50,000 ppm to 10 ppm in a few hours at low temperature )
  • Breaks strong emulsions and corrects foaming issues
  • Reduces oxidation effects (MPC from 50 to 10, acidity from 2 to 0.07)
  • Extracts 100% of free gases and 95% of dissolved gases
  • Filters down to ISO 4406 = 10/11/09, ensuring superior oil cleanliness
  • Uses advanced molecular filtration and Extension Mode
    to eliminate varnish and oxidation residues

The award-winning project is based on a non-destructive EPR technology developed in partnership with French universities and the CNRS. This unique system detects the early signs of degradation in industrial oils, enabling technical problems to be anticipated before they occur. Thanks to this innovation, THEMIS enables industrial companies to optimize the lifespan of their equipment and prevent costly breakdowns.

THEMIS Filtration, part of the Antara Groupe, won the Prix de l'Innovation 2024 at this year's Trophées des Entreprises. The Châteaudun-based SME specializes in hydraulic cleanliness, offering state-of-the-art filtration solutions for hydraulic and industrial oils. The award, presented to Marie ROUCAN, Head of THEMIS's Research Laboratory, crowns several decades of technological innovation and collaborative research.

A unique research project in the world

THEMIS Filtration has combined technological expertise and scientific collaboration to design this unique innovation. This new technology revolutionizes the treatment of industrial oils by enabling continuous and precise monitoring, thus anticipating any deterioration that may affect machine performance.

#Innovation2024 #HydraulicCleanliness #AntaraGroupe #BusinessAwards #IndustrialTechnology #ResearchAndDevelopment #OilFiltration #EPR #RPE #CNRS #InnovativeIndustry #Varnish

Laurent Lefur, manager of THEMIS Filtration, explains:
"We have been innovating in oil treatment processes for over twenty years. Our collaborative project with the CNRS has enabled us to develop a technology that offers manufacturers an advanced predictive solution. We are proud to see our innovation recognized at such a prestigious level."
This major project required an investment of €550,000, supported by the Antara Group, and has attracted the attention of the international scientific community. The technology has already been the subject of several publications and presentations at world congresses, with a forthcoming paper scheduled for Washington.
Jérémy Pallas, Director of Research and Development at THEMIS Filtration, adds:
"Understanding oil degradation better has opened new doors for us, and this innovation enables us to make predictions for our customers. We also hope, in the next few years, to be able to set up a plant dedicated to new materials."

We are delighted to share one of our many laboratory aging processes with you.

These methods allow us to:

  • Mapping oil ageing
  • Understand the behavior of base oils with additives
  • Conduct research on proactive maintenance and modeling for artificial intelligence
  • Test compatibility between oils ASTM D 7155, etc.

In this video, our laboratory manager takes you into the world of oil ageing tests, highlighting some of the important steps involved.

Damaged parts, fluid treatment required
Pollution and contaminants to be treated

This video is a must for anyone wishing to to understand the challenges of lubrication oil durability and reducing maintenance costs.

#Agingoiltesting #LubricatingOil #Varnish #Gel
#Oilpurification #RotativeMachines #PreventiveMaintenance
#Oilpurification

We're delighted to share with you our appearance on BFM Business in FOCUS PME, where we had the opportunity to present our expertise and research in the field of oils, fuels and their monitoring and degradation treatment. It was an enriching and exciting experience!

Jérémy Pallas (Themis): Themis is a filtration solutions manufacturer - 08/07 (bfmtv.com)
In this interview, we discussed the innovations we've brought to the field of organic fluid filtration and how they're having a significant impact on the industry. We also shared our strategic vision for the future, highlighting our commitment to sustainable growth and operational excellence.
Our R&D Director Jérémy Pallas, shared our vision and processing know-how on nanotechnologies, artificial intelligence and the importance of embracing new technologies to remain competitive in the global marketplace.
We are honored to have been invited by BFM Business to present our company, our expertise and our projects. It is a testament to the recognition of our work and our determination to push back the boundaries of innovation.
We would like to warmly thank the entire BFM Business team for this exceptional opportunity, as well as our collaborators, partners and customers who have contributed to our success.
If you missed our appearance on BFM Business, we invite you to watch it online ( JérémyPallas (Themis): Themis is a manufacturer of filtration solutions - 08/07 (bfmtv.com)) and find out how Antara Groupe is shaping the future of fluid filtration.
We're delighted to share this experience with you and to continue innovating. Stay tuned for more exciting updates! www.antara-groupe.com

Jérémy Pallas (Themis): Themis is a manufacturer of filtration solutions - 08/07 (bfmtv.com)
#AntaraGroupe #Innovation #BFMBusiness #DigitalTransformation #Leadership #Success #FocusSME #Nanotechnology #ESR #Hydraulic oil #Lubrication #Biofuel #Varnishhydraulicoil #Diesel #OILPURIFICATION #RPE #VARNISH

As part of the Infranalytics initiative, the Centre National de la Recherche Scientifique (CNRS) and Themis (an ANTARA GROUPE company) have announced a strategic collaboration to improve the sustainability, safety and efficiency of critical infrastructures through fluid analysis.

The research is initially focused on lubricating oils.

Understanding their degradation means helping to optimize systems by reducing pollution and improving production. It also helps reduce manufacturing costs. How can we help?

By improving their lifespan and the reliability of moving components. The degradation of oils generates deposits, acids, increased friction and temperature, and the appearance of varnish, soot, sludge, and gels.

Anticipating these phenomena is possible by studying the precursor and self-degrading agents in the oil.

EPR allows us to see these highly reactive substances and predict the future.

Infranalytics is a delocalized research infrastructure bringing together state-of-the-art analytical equipment in the fields of molecular chemistry and materials science. It aims to promote scientific excellence and meet societal challenges by optimizing the use of this equipment by a broad scientific community.

As part of this collaboration, CNRS will provide Themis (https://www.antara-groupe.com) with its scientific expertise and state-of-the-art equipment for infrastructure analysis. Themis, as a manufacturer of industrial filtration solutions, will contribute its practical experience in monitoring and optimizing fluid treatment within critical infrastructures.

The aim of this collaboration is to develop new methods and techniques for infrastructure analysis, combining the resources of CNRS with the practical expertise of Themis. The researchers will work hand in hand to improve the sustainability, safety and efficiency of critical infrastructures such as energy, transport and communication networks.

A key area of exploration for this collaboration will be EPR technology. This analysis method exploits the magnetic properties of materials to obtain information on their structure and composition. Using EPR technology, researchers will be able to detect degradation and anomalies in infrastructures, predict their lifespan and optimize their maintenance.

The collaboration between CNRS and Themis on Infranalytics is a testament to the importance of synergy between academic research and industry. By combining the scientific expertise of the CNRS with the practical experience of Themis, this collaboration pushes back the boundaries of fluid analysis and opens up new perspectives.

Thanks to this collaboration, the results of the research can be directly applied in the industrial field, making a significant contribution to the sustainability and efficiency of critical infrastructures. This collaboration strengthens the position of CNRS and Themis as leaders in infrastructure analysis, and opens the way to new research and development opportunities. In this respect, Marie ROUCAN (Head of Research and Testing Laboratory) presented the interest of EPR technology in Industry during an Infranalytics meeting link to the video below ESR TECHNOLOGY, COLLABORATION BETWEEN INFRANALYTICS, THEMIS AND CNRS Lille - YouTube

In conclusion, the collaboration between CNRS and Themis within the framework of Infranalytics represents a major step towards improving the sustainability and efficiency of critical infrastructures through fluid analysis. By joining forces, these major players are contributing to a sustainable and prosperous future.

#ESR #Collaborationthemiscnrs #FluidAnalysis #Nanotechnology #Cnrslille #Themis #RPE

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