"In the new BioTrac system it is easy to handle a variety of biomasses and we can closely control and follow what is happening in the process. The system represents world class and is based on technology which was originally developed for the pulp and paper industry, where Valmet has extensive experience going over hundred years back," says Olof Melander, Manager, Valmet Fiber Technology Center in Sundsvall.

Hydrolysis is a chemical process that, under elevated temperature and pressure, makes cellulose and hemicellulose available to be split into different sugars and lignin in subsequent processes. The lignin is obtained as a solid residue. Both sugars and lignin can then be further refined.