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waste water treatment by wet air oxidation: The textile wastewater discharged from printing and dyeing processes is characterized by high chemical oxygen demand (COD), low biochemical oxygen
A typical biodiesel production process based on alkali-transesterification of oily feedstocks is shown in Fig. 1.The main process steps are as follows: transesterification reaction, the separation of the ester phase (crude biodiesel) from the methanol/glycerol phase, wet washing of the ester phase, the separation of biodiesel from wastewater and drying of biodiesel.
