| abstract |
A process for increasing the feed value of lignocellulosic materials by alkali-treatment and subsequent neutralization with an acid in a closed system under circulation of the treating agents. Said treating agents are supplied or prepared during the course of the treatment at a rate essentially corresponding to the liquid uptake of the lignocellulosic material, the quantities of residual solutions resulting from the treatment being kept at a minimum. Moreover, an apparatus for carrying such process into effect. |