Assertion: lignin | /r/HasProperty | marketed as solid bio-fuel
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Lignin is usually marketed as a solid bio-fuel, whereas lignosulfonate, i.e., sulfonated lignin derived from sulfite pulping, has found use as a concrete additive, emulsifier, and ion-exchange resin (Tejado et al. 2007; Tomani et al.