Abstract
Electronic waste is growing at an alarming rate in the modern world. Disposal of the plastic materials from discarded electronic items is a major environmental concern and thermochemical recycling has gained lots of attention to effectively convert them into valuable products. In this paper, direct liquefaction of discarded printer cartridge plastic (DPCP) was conducted without using commercial solvent and catalyst and the experiments were carried out under nitrogen atmosphere replacing costly hydrogen. The effect of temperature and residence time on DPCP liquefaction has been assessed. Oil yield increased significantly with temperature and the maximum oil yield of 48.66 wt% was achieved at 400 °C in 15 min. Reaction kinetics of DPCP liquefaction were studied by developing kinetic model with proposed reaction mechanism and the kinetic parameters were evaluated. GC–MS analysis of the oil confirmed the presence of compounds having a carbon chain length in the range of C8- C31, approachable to the carbon chain length of C8- C25 in the diesel fuel. Higher H/C ratio (>1) and comparable physical properties of DPCP liquefied oil with other transportation liquid fuels signify its possible blending with commercial grade fuels after downstream upgrading processes.
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