Pyrolysis Behavior of Polyvinyl Chloride with Sodium Hydroxide and Application to Copper Recovery from Multiwire Tinned Copper Cables

In this study, polyvinyl chloride (PVC) was pyrolyzed with sodium hydroxide (NaOH) to capture the generated hydrogen (HCl) gas as (NaCl) and carbonize organic contents generate fuel gases such (H2) methane (CH4). addition, pyrolysis behavior of PVC NaOH, its application copper recovery from thin PVC-coated tinned multiwire cables were examined. With an increase in temperature, released HCl at approximately 300°C underwent carbonization 500°C. Upon immersing a NaOH solution, it converted into powdered carbonaceous material; therefore, amount decreased by being captured NaCl, whereas increased pyrolysis. At heating temperature 500°C, coating wire removed via formation material salts after addition distilled water. The results suggest that environmentally friendly eff ective process for capturing NaCl converting covered materials is suitable treatment, proposed approach can be applied through NaOH.