In the production site of a factory where cassava starch into biodegradable plastic, a bag of white plastic granules is “swallowed” by the production machinery, and some “spit out” shopping bags, garbage bags, and some “spit out” agricultural film, commonly used cups, bowls and lunch boxes. Chen Qingquan, the person in charge of the Hainan Environmental Protection Products Co., Ltd., said: The plastic products produced from cassava starch can be completely degraded in 90 days if buried in underground compost, and the plastic will turn into water and carbon dioxide and return to nature.
Why is plastic completely biodegradable? Liu Tao, deputy dean of the Provincial Ecological Research Institute, said that the processing raw materials of the “completely biodegradable” plastic products in this project are mainly starch produced from cassava, and the production has reached the food grade. According to the National Plastic Products Quality Supervision and Inspection Center, the complete degradation rate of plastic products made of cassava is 6 times higher than the international standard. The energy saving is more than 100 times that of all petrochemical plastics, and there are also the peculiar effects of improving the soil. Cassava starch becomes waste produced in the peoduction process of cassava starch into biodegradable plastic, after being crushed, it can also be used as an animal feed and an organic fertilizer raw material.