Industrialized fine physical regeneration process and economic benefit assessment for recycling waste HDPE containers

Fine Regeneration of ABS and PS Plastics from Waste Refrigerators through Mechanical Physical Recycling

“…7 Therefore, the focus of environmental pollution control and resource utilization of electronic waste lies in the innovation and development of green treatment equipment, and achieving automatic and efficient automatic sorting is a key research and development direction for the reuse of electronic waste resources. 8,9 As an important part of electronic waste, the number of waste refrigerators is expected to reach 45 million by 2035. 10 Waste refrigerators contain materials such as plastic, iron, copper, and aluminum, which endow them with great resource attributes.…”

“…27 Advanced physical recycling technology refers to the process of crushing, cleaning, and separating through physical methods to obtain pure plastic flakes. 9,28 Physical recycling technology has the advantages of large processing capacity and a simple process, making it suitable for large-scale purification treatment. However, ABS and PS plastic flakes recovered by the existing physical process contain many impurities such as polyurethane foam, metal, and glass, which cannot be directly used as raw materials in new household appliances.…”

“…The complex structure and composition of electronic waste restrict the promotion and application of its automated dismantling equipment, becoming a key problem commonly encountered in the electronic waste industry. − The breakthrough of any key technical problem cannot be separated from the identification and resolution of key scientific problems . Therefore, the focus of environmental pollution control and resource utilization of electronic waste lies in the innovation and development of green treatment equipment, and achieving automatic and efficient automatic sorting is a key research and development direction for the reuse of electronic waste resources. , …”

Optimizing the Recycling Process of PP Plastics from Waste Washing Machines: Sustainable Strategy for Environmentally Friendly Reutilization

“…16,17 Choosing appropriate cleaning methods and parameters based on the characteristics and degree of pollution of plastics is crucial. 18 For example, for firmly attached pollutants, friction cleaning is required. 19 Sorting is further screened based on the material and color of plastics to ensure the purity of the recycled copolymer PP.…”

“…To achieve the purification of plastic from waste washing machines, a continuous treatment process based on physical sorting and melt filtration extrusion is feasible. , Through methods such as pneumatic separation, flotation, , and photoelectric separation, impurities such as metals, PS, and ABS with a millimeter level or higher can be effectively removed. In this process, decontamination is an important step in removing residues and pollutants from the plastic components. , Choosing appropriate cleaning methods and parameters based on the characteristics and degree of pollution of plastics is crucial . For example, for firmly attached pollutants, friction cleaning is required .…”