1. Some white solid co-distilled and was separated by decantation.

2. Filtration, decantation, distillation, evaporation and crystallization are physical separating Methods: Without formation of new substances.

3. Filtration, decantation , distillation, evaporation and crystallization are physical separating methods without formation of new substances.

4. The remaining nitrile, after decantation or filtration, is still colored but is substantially free of amide.

5. Since the SS in the wastewater is very high, the anaerobic treatment could be divided into fermentation with decantation or without decantation according to SS treatment.

6. Then, DCP was separated from the solid by means of decantation .

7. The product was immiscible with SPILs and could be separated simply by decantation after the reaction.