Recycling of
used acids

We enable sustainable sulphuric acid recycling by treating used sulphuric acid and passing it on as a new product. The recycling process at the Duisburg site was developed by us and ensures efficient and environmentally friendly treatment of used sulphuric acid.

The advantages of
GRILLO recycling


Sustainable processing & low CO2 emissions

GRILLO is one of the few providers for reprocessing of contaminated sulphurous acids. Sulphur dioxide produced during reprocessing is sold again as a valuable material to the fibre and cellulose industry as well as the food and pharmaceutical industries. The entire process is ISO 14067 certified and the specific CO2 emissions generated can be provided by means of accredited certificates.

More advantages

Largest supplier & market leader
GRILLO is the largest supplier in the free market of sulphuric acid recycling services.
High competence in handling
We have outstanding expertise in handling sulphuric acid and thus offer our customers a high level of safety and reliability.
Our recycling programme ensures sustainable use of resources and supports the circular economy.

Recycling of sulphuric acid
sustainable treatment at GRILLO

We offer our customers a sustainable way to use sulphuric acid and then recycle it to create a closed loop – all in line with an environmentally friendly circular economy.

How does the recycling process work?

Industrial waste materials are incinerated at high temperatures in two independently operating rotary kilns. The gas released in the process is purified and used as a raw material in the production of high-purity sulphur dioxide liquid.

Further topics

Certified waste management company

In the course of our continuous quality, environmental and safety optimisation, we are regularly subject to examination as a waste management company, as which we have been certified since 2001.

The employees of the Chemicals Division work in accordance with our principles of environmental and safety policy and always strive to further optimise them. Our objective is the satisfaction of our customers through holistic problem solutions.

GRILLO recycles and disposes of “used” sulphuric acids from industry. As a waste management company, we offer solutions for waste issues of an industrial nature.



Together for a liveable and sustainable future

At GRILLO, we are convinced that sustainability is not a trend, but a necessity. We therefore aim to continuously improve our processes and products and make a positive impact on the environment and society. We rely on sustainable solutions such as ECO ZINC, a circular economy and CO2 reduced production to make our contribution to climate protection and create a future worth living.

GRILLO media library: find out more!

From technical data sheets to detailed presentations and press articles – in our media library you will find all the details about our products and solutions for download.


Do you have any questions or do you need our advice?

Simply contact us by phone or via our form.

Ralf Heeb

+49 203 5557-242

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