The Explorer is a one-of-a-kind search engine that showcases profitable climate solutions from all over the world which are part of an ever-growing, curated, and publicly-accessible database. Select your profile, your needs and climate goals to discover the solutions that fit best with your situation.

Explore Learn more

Cancel Confirm

My Search Alerts

The Solutions Explorer lets you create alerts that match your needs. You can create several alerts and you will receive a notification each time a new Solar Impulse Efficient Solutions is labeled and matches your filters.

Your Search Alerts will show up here.

Sign in to create alerts for your filters and search terms.

Sign in

Don't have an account?

Sign up

My Favorites

The Solutions Explorer lets you shortlist your favorite solutions.

Your favorites will show up here.

Sign in to add a solution to your favorites.

Sign in

Don't have an account?

Sign up

Contact the Solution's Provider

You can contact each Solution’s Provider through the « Solutions Explorer » contact form. The team will also follow up to make sure you’ll have an answer to your request.

Your contact form will show up here.

Sign in to contact the Solution's Provider

Sign in

Don't have an account?

Sign up

My Account

Sign in

Don't have an account?

Sign up


A novel acid regeneration system for steel pickling

May 2018
Gallery REM 1
Gallery REM 1


The pickling process, used by stainless steel manufacturers to remove metal impurities, is highly polluting and operationally expensive. This solution reduces both the environmental and operational costs.

Globally, 300,000 liters of mixtures of nitric and hydrofluoric acid are used for pickling processes every hour and turned into large amounts of waste acid. This process causes significant problems to the environment and very high operational costs for manufacturers. The REGMAX innovative process combines gentle drying of liquid acid wastes in a first step and a pyrohydrolysis reaction in a second step. The waste acid is vaporized and separated into gaseous acid and metal salts. Recovered acid is reused for pickling while the metal oxides can be reused for steel production, and drastically reduces environmental impact and operational costs.

Label Date May 17, 2018
From Austria
Maturity stage Prototype testing in the real world
Looking For Clients to use the REGMAX system. Increased visibility. Investors looking to invest in the solution.

The environmental benefits

  • REGMAX is the only system which enables total recovery of acid wastes
  • Water waste reduction by 99%
  • Toxic sludge reduction by 100%
  • Hydrofluoric acid reduction by 99%
  • Nitric acid reduction by 97%

The Financial benefits

  • Acid related OPEX costs of pickling reduced by up to 91 %

Activity Region

  • /
  • Headquarters
  • Activity

Company Profile


Our mission is to elimate waste acid from stainless steel industry.

View company profile
Headquarters 3400, Österreich
Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator SUSTEC GmbH has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.