The role of chelating technology in efficient and sustainable pulp bleaching

The bleaching process is one of the most sensitive stages in pulp production — and the presence of metal ions such as iron, manganese, and copper can completely compromise the efficiency of hydrogen peroxide, the main bleaching agent.

These metals catalyze undesirable reactions, generating highly reactive hydroxyl radicals that degrade both lignin and cellulose, increasing peroxide consumption, reducing pulp yield, and impacting the final brightness quality.

This is where Ecosign Technologies’ chelating solutions come in.Developed through research at our Development, Research, and Technology Center (CDT), these solutions act selectively and efficiently, complexing metal ions and preventing unwanted reactions.

The result: a more stable, economical, and predictable bleaching process

• Greater efficiency in hydrogen peroxide usage

• Increased yield of bleached pulp

• Better brightness control and reduced process variability

  
  

Performance and reliability that deliver results

Ecosign Technologies’ chelating technology is designed to maximize performance under different operating conditions, offering high metal complexation capacity, thermal stability, and compatibility with alkaline systems.

Comparative studies show significant gains in chelating power over conventional market solutions, with highlights including:

• Higher efficiency in metal ion removal;

• Lower cellulose degradation;

• Reduced total chemical consumption in bleaching.

  
  

And all this with EDTA-free, non-toxic, and effluent-compatible products, ensuring industrial performance combined with environmental responsibility.

Sustainable innovation serving the industry

With ISO 9001 and ISO 14001 certifications, Ecosign Technologies reinforces its commitment to sustainability and technical excellence.

Each solution is developed in a customized way to enhance process performance, reduce operational costs, and support our clients on their journey toward a cleaner, more efficient pulp and paper industry.

Want to boost your bleaching performance?Contact our technical team and discover how Ecosign Technologies’ innovations can optimize your results and ensure more stable and sustainable processes.

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