Thick black liquor, thin black liquor and solid state sodium hydroxide are added to the liquor treated by sulfur dioxide, then the blended liquor is used to recycle cooking of straw pulp. The black liquor, separated l...
The measurement of lignin content in black liquid of straw AS-AQ by ultraviolet spectrophotometer(UV) is discussed in this paper. Different dilution multiple and contrast solutions have an effect on the measured resul...
In the research Pinus koraiensis and Lorix gmelini were used as raw materials,with the analysis of L9 (34) experimental design and pulping mechanism, the optimal pulping technological parameters and corresponding AS-A...