Pengolahan Limbah Plastik Kemasan Multilayer Ldpe (Low Density Poly Ethilene) dengan Menggunakan Metode Pirolisis Microwave

Abstract

Increased energy consumption and waste generation are two problems that rise due to economic and population growth. To overcome the problem, especially plastic waste, environmental experts and scientists from various disciplines have conducted various studies and actions. One way is to degrade the Low Density Polyethylene plastic waste multilayer packaging by microwave pyrolysis. The purpose is to determine the effect of temperature and time when degrading the LDPE plastics waste by microwave pyrolysis. The processes done with operating condition of pressure at 1 atm and nitrogen flowed at 0.5 L / min in glass reactor. Samples are used as much as 60 grams of LDPE plastics. The sample is heated to a temperature of 250, 350, and 500°C it’s maintained at variable time for 10, 30, and 60 minutes. Liquid products were analyzed by gas chromatography-mass spectrometry (GC-MS), non-condensable gas was analyzed by gas chromatography (GC), raw material samples were analyzed using Fourier Transform Infrared (FTIR) and calculating the yield of liquid products, solid and concentration of gas. From the experimental results are obtained that microwave pyrolysis best operating conditions is at 500oC of 60 minutes with 4.67% yield of solid, 23.65% liquid, and concentration of CH4 30.41%.