Adsorption of lignocelluloses of pre-hydrolysis liquor on calcium carbonate to induce functional filler

► The adsorption of lignocelluloses of prehydrolysis liquor on PCC was studied. ► 200 mg/g oligo-sugars, 80 mg/g lignin and 50 mg/g furfural on PCC were obtained. ► The addition of CPAM to PHL improved the adsorption of lignocelluloses. ► Maximum lignocelluloses adsorption was 0.36 g/g on PCC (0.22 g/g was oligo-sugars).