To manufacture lignosulfonates tanning agent with Valonea tan waste, the technology proness and workable conditions have been investigated.

• 橡碗经浸提制取栲胶后,排除大量橡碗废渣,造成环境污染。本研究的目的是从橡碗废渣中提取木素,通过改性,得到木素磺酸鞣剂。