Using waste vegetable oil to make biodiesel to extract sterol

Yesterday, it was learned from Tianjin University of technology that Xie Yaohui, an undergraduate of the school of environment and chemical engineering, and other researchers have developed new technologies that can turn waste vegetable oil residue into a treasure The preparation of biodiesel and the extraction of phytosterol can not only reduce the emissions of waste residue of nearly 10000 tons per year, but also produce about 150 million yuan of economic benefits The research results of the research group show that the vegetable oil residue is rich in phytosterols (about 20% - 35% of the weight of residual oil) and fatty acids (about 30% - 45% of the weight of residual oil) But traditional technology is difficult to extract and use In order to realize the comprehensive utilization of fatty acids in residual oil, the effective substances were extracted by catalytic decomposition It is known that phytosterol is a kind of natural substance with important physiological value, which can be used as the raw material of steroid hormone drugs to reduce blood fat, fight cancer and prevent prostate diseases Biodiesel is a kind of green renewable energy, which is made from vegetable oil or animal oil by esterification or transesterification with low molecular weight alcohol The researchers calculated that the current market price of vegetable oil residue oil is less than 2000 yuan per ton, while the market price of sterol with more than 90% content is about 70000 yuan per ton, and that of biodiesel is 7000 yuan per ton According to the calculation of 20% of the residual oil and 30% of the biodiesel, the output value of residual oil per ton reaches 16000 yuan.