LigniOx technology based on alkali-O₂ oxidation is a cost-efficient and environmentally friendly way to convert lignin into versatile dispersants.

• LigniOx concrete plasticizers provide a wide range of application possibilities with high market volumes (over 10 MMT/a).
• LigniOx lignin as a concrete plasticizer provides:
  • – Higher performance compared to lignosulfonate admixture.
  • – Comparable performance with synthetic superplasticizers at higher dosage.
• Performance of LigniOx lignin has been shown also as gypsum plasticizer and dispersant of various inorganic pigments and fillers (e.g. for paints and coatings).
• Safe and low-cost bulk chemicals (O₂, NaOH) are used in the process, enabling integration into biorefineries.

• LigniOx technology has been developed and patented by VTT:

1. ALKALI-O2 OXIDIZED LIGNIN AS DISPERSANT (VTT), WO2015049424, CA 2999226 – Granted, Canada
2. USE OF OXIDIZED LIGNIN AS A DISPERSANT (VTT), WO2017077198, FI20135986, US9676667, ZL201480054352.3 – Granted, Finland, USA, China
3. METHOD FOR PRODUCING OXIDISED LIGNIN IN KRAFT PULP MILL (VTT, Andritz, Metsä Fibre), WO2020157386

• For further information see:
  Kalliola et al., Alkali-O₂ oxidized lignin – A bio-based concrete plasticizer, Ind. Crops Prod 74 (2015), 150-157.

LigniOx for high-performance biodispersants

LigniOx technology – Concept

LigniOx concept for kraft pulp mill

What makes LigniOx interesting?