The only association that gathers over 1000 scientific and technical members around fundamental, engineering and applied aspects of oxidation technologies involving ozone or any related oxidants for any purpose.

The EA3G group of IOA manages the IOA membership and particularly develops activities in Europe, Africa, Asia and Australasia.


Subscribe for membership to IOA for year 2024Apply by clicking here.

And take part in all activities.


EA3G2024 International Conference & Exhibition
27-29 November 2024, Porto (Portugal)

Ozone and Advanced Oxidation: Science, technologies and applications for a better world

Mark your calendar!!

> Announcement and call for papers

> Exhibition & Sponsoring offer available soon.

> Further information and website available soon


Webinar series

Ozone-based solutions to fight pathogens

and related epidemics

Next webinars

 - Air and surfaces decontamination

 - Water application

 - Implementation

 - Comparison and coupling with other disinfectants


Replays of past webinars

 > Ozone in Medicine. Prevention and Convalescence in Virus Diseases- Inactivation of SARS-CoV-2 and other viruses., by Renate VIEBAHN on 18 November 2021.

> Register for access to the replay

> Download the brochure

 > Ozone inactivation of SARS-CoV-2 and other viruses, by Jean-Pierre DUGUET on 8th July 2021.

> Register for access to the replay

> Download the brochure

Book publishing

> Ozone in Medicine

The Low-Dose Ozone Concept - Basics, Guidelines and Treatment Concepts

> Ozone & Advanced Oxidation

Solutions for the Removal of Microcontaminants in wastewater

Membership benefits

Membership in IOA gives you the opportunity to:

Get the latest information on research topics, current issues, technologies under development, new applications and equipments in connection with ozone and derived or comparable oxidants through publications and events with discounts on rates

Meet colleagues and specialists working in your interest fields, collaborate with them to share experiences and debate positions, establish business contacts via IOA network.

Contribute to extend knowledge about ozone and related oxidants, participating at conferences, writing papers for publication.

Take part in programs for a wide admission of potentialities offered by ozone-based technologies.

What's on



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IOA Events

In addition to its biennal World Congress, IOA organises each year through its three Regional Groups international conferences, workshops and exhibitions on topics of major interest for solving current issues in:

    Environmental and human health protection (water, air, soil and waste purification)

    Industry solutions for production, purification and depollution.

    Medical therapy and facility safety.

Latest publications

Ozone: Science & Technologies journal (OS&E) volume 46 issue 2, 2024.

Login as IOA member to get access online.

Discover the Content

IOA26 World Congress & Exhibition
2 - 7 July 2023, Politecnico di Milano, Milan (Italy)

Ozone and Advanced Oxidation

Leadind-edge science and technologies

International Conference & Exhibition EA3G2022
28-30 November 2022, Toulouse (France)

Ozone and Advanced Oxidation: Science, technologies and applications for a better world

> Programme

24th IOA Ozone World Congress & Exhibition: 20-25 October 2019 in Nice (France).

> Download the Programme & Book of abstracts.

> Download the Proceedings Order form.

Video Teaching Project Ozone in Medicine by R. Viebahn-Haensler

Free access for IOA members. Ask your code

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