For waste oils and fats with high acid value, the suitable environmentally friendly catalysts are solid acid and ionic liquid.
对于酸值高的废油脂，宜采用固体酸和离子液体等环境友好催化剂。
2
In this paper, technological process of conversion of wasteliquid of sodium formate to oxalic acid is described.
本文研究了甲酸钠废液转变为草酸的工艺流程。
3
The liquidwaste of synthesizing adhesive was treat with boric acid, sodium sulfate and PFS by coagulation. Through a series of experiment, the best operation parameter was gained.