The study and application of lignin from pulping spent liquor was outlined in building,oil exploitation,rubber and plastics,water treatment chemicals and agriculture.

The combustion swelling properties of VIE of the pulping spent liquor of poplar,wheat straw and rice straw were investigated.

Study on reducing moisture of superphosphate by pulping waste liquor;

Floccubility of chitosan and its application in separating soluble lignin from pulping waste liquor;

A study on adsorption and flocculation of twinscrew extruder pulping effluent for cotton stalk

with wheat straw pulping effluent as the major raw material.

Powder biomass sand stabilization material (BSSM) was prepared with the pulping effluent of the straw pulp enterprises as the mainraw material and through the concentration by evaporation, urea-formaldehyde cross link modification and spray drying in a pilot scale produc-tion line.

The improving effects of acid soil with lignin- sludge from treating pulping black liquor was studied using indoor culture methods with plastic reactors.