Assertion: washed lignin | /r/HasProperty | treated
Facets:
Source sentences:
text: Two pending patents have been developed to accomplish the removal of guaiacol: (1) the guaiacol removal treatment takes place during the lignin precipitation and washing process, removing approximately 60% of the compound, and (2) the washed lignin is treated, i.e., after the lignin extraction and washing treatment; the latter approach is considered efficient due to the removal of approximately 97% of the guaiacol (Valmet 2017).