Nera Tanning > University of Zeology > Position papers

Position papers

Sharing our knowledge: Position papers

At Nera, we believe that sharing our extensive knowledge on zeolite tanning contributes to a more sustainable leather value chain. Therefore, we are making make our insights, experience and knowledge of Zeology available through the University of Zeology. As we are continuously gaining more insights, we will be making new knowledge available regularly.

Learn more about how you can contribute to a more sustainable leather value chain, by choosing zeolite-based tanning with Zeology. Dive in!

Are Zeology leather products available?
The answer is: yes! Zeology leather is commercially available and you can already find it in footwear, car seats, bags and other items.
How To Work With Zeology – FAQ
We have gathered the frequently asked questions about How To Work With Zeology and answered them in one document. Free download.
Masterclass ‘How to work with Zeology’
Watch a step-by-step lecture on how to work with Zeology and how to get optimal results. The Q&A is also available (pdf).
FAQ Biodegradability
Can leather be biodegradable? Get your answers to the most frequently asked questions.
On what types of skin can Zeology be used?
Zeology tanning can be used for both bovine hides (e.g. bull, cow, buffalo, yaks) and ovine skins (e.g. sheep, goat).
What is the difference between ‘biodegrading’ and ‘composting’?
The first stage of biodegradation is biodeterioration, e.g., black spots on bananas – surface breakdown.
Is Zeology tanned leather more biodegradable than chrome tanned leather?
Zeology tanned leather does biodegrade quicker than the traditional tanning technologies.
Whitepaper: Biodegradability and disintegration of leather
Download the Whitepaper 'Biodegradability and disintegration of leather'.
Biodegradability of Zeo White
The biodisintegration of Zeo White is found to be rapid and results in almost complete compostability and aqueous biodegradation.
Masterclass: Biodegradability of Leather
From hide to shoe. How can leather stay biodegradable? Watch the replay of our online Masterclass.
The leather making process: step by step
How is leather made? How to source the most sustainable leather? An overview.
It’s time to revolutionize leather tanning
Enter the world of sustainable leather tanning and discover the science behind Zeology. Watch the video.
The science and chemistry behind Zeology
An in-depth and scientific-based explanation of how Zeology and zeolite works. Watch the movie.
Zeology, a perfect fit for white leather
Zeo White's bright white color enables white leather, and lighter and brighter colors than were ever possible before.
Download: Technical Data Sheet
An overview of technical information about Zeology's product characteristics and the tanning process .
What is a metal tannage?
The type of metal tannage that receives the most media attention is the chrome tannage.
The tanning processes
Discover how the Zeology tanning processes work.
The main benefits of Zeology
The main benefit of Zeology is for the environment: less polution. Discover the benefits for brands and tanneries.
Download: Zeology Information Kit
A ready-made document with the basics, benefits and FAQ's on Zeology. Including a basic and technical glossary.
Frequently Asked Questions
Of course you want to know more. Find the answer to your question.
Zeology & sustainability
Zeology’s main benefit is for the environment: less pollution, less discharge of chemicals in waste and waste water.
Zeolite explained
What are zeolites and how can it be used in leather tanning?
Whitepaper: Zeolite & metals
When it comes to tanning, and possible undesirable side effects, media attention is mostly focussed on chrome tanning. What is metal tanning?
Zeology and waste stream
The waste streams that arise from the tanning and tanned leather are typically shavings, clippings and sludge.
Tanning chemicals: what are the options?
Read all about chrome tanning, vegetable tanning and chrome-free tanning methods.
Effluent Treatment Plant (ETP)
In the Effluent Treatment Plant, all the liquid streams of the Zeology tanning process are treated to be reused or ready for disposal.