Chemical Recycling of Poly Ethylene Terephthalate Wastes
نویسندگان
چکیده
Chemical recycling of Polyethylene terephthalate, PET, wastage has been investigated in this study. The aim of this work is recovery of terephthalic acid and ethylene glycols from PET waste. This process has been done in two stages. At the first stage, reaction between PET waste and sodium hydroxide for production of ethylene glycol and sodium terephthalate solution carried out in a stainless steel mix reactor. At the second stage, reaction between produced sodium terephthalate and hydrochloric acid led to terephthalic acid production. Some important parameters such as operating temperature and pressures and quantity of consuming sodium hydroxide and hydrochloric acid have been studied. The optimum amount of sodium hydroxide and hydrochloric acid were achieved 50gr and 166gr per 1kg of PET waste, respectively. Operating temperature and pressure was achieved 180°C and 1.5bar in the first stage.
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