Assertion: lignin | /r/HasProperty | precipitated
Facets:
value: by adding water
type: MANNER
value: from black liquor
type: OTHER
value: by adjusting the ph
type: MANNER
Source sentences:
text: The results obtained for the chemical composition and the FTIR and NMR analysis of the LIG samples ( Figures S1 and S2 ) suggest that the lignin was isolated from wood using a pulping process containing sulfur delignifying agents and/or was precipitated using sulfuric acid.
text: Lignin was precipitated from black liquor by adjusting the pH to 2 with 2 mol/L H 2 SO 4 , and stirred for 1 h at 55 °C.
text: Organic acids are collected by concentration of the cooking liquor and then lignin is precipitated by adding water and high pressure filtration.
text: Organic solvents are collected by separating water from the cooking liquor and then the lignin is precipitated by adding water, heat, and filtration.
text: The lignin-containing liquor obtained from alkaline pulping processes is acidified and the lignin, being insoluble in an acidic medium, is precipitated and separated by filtration from the water-soluble salts which remain in the filtrate.