Optimization of process parameters at direct liquefaction of waste PETs
Küçük Resim Yok
Tarih
2023
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Waste polyethylene terephthalate (wPET) was converted to liquid fuel by direct liquefaction method. Addi-tionally, how the catalyst (sodium borohydride) and microwave pre-treatment affect the total conversion and the char yield were investigated. Direct liquefaction experiments were carried out in a batch reactor under non-catalytic/catalytic conditions, and reaction temperature of 325-425 degrees C, and solid/solvent ratio of 1/4, and reac-tion time of 15-90 min, and microwave pre-treatment time of 3-10 min, and an initial nitrogen pressure of 20 bar. Both the microwave pre-treatment and sodium borohydride (NaBH4) increased the total conversion in the direct liquefaction of wPETs. According to fourier transform infrared spectroscopy (FTIR) and X-Ray diffraction (XRD) analysis of char samples obtained in the direct liquefaction process, the NaBH4 was converted to sodium borate (Na2B8O13). NaBH4 made both hydrogen (H) donating and catalytic effect. The highest total conversion in direct liquefaction of wPETs, which has at the reaction time of 30 min, and the reaction temperature of 400 degrees C, and in presence of NaBH4, and the microwave pre-treatment of 3 and 8 min, was 62%. The optimum process parameters in direct liquefaction of wPETs are the reaction time of 30 min, and reaction temperature of 400 degrees C, and the microwave pre-treatment time of 3 min.
Açıklama
Anahtar Kelimeler
PET recycling, Sodium borohydride, Direct liquefaction, Microwave pre-treated, Process parameters, Total conversion, Char and oil yield, Characterization
Kaynak
Process Safety and Environmental Protection
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
171
