Conversion of Natural Rubber Product to Bio-Crude Oil By Hydrothermal Liquefaction Process
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Abstract
This research investigates the conversion yield of natural rubber product such as raw rubber sheets, cup lumps, and Para rubber latex to bio-crude oil by hydrothermal liquefaction process. The reaction temperatures are in the ranges of 350 °C and 375 °C. The materials are dissolved in water at H2O/NR mass ratios of 2:1, 3:1, and 4:1. The reaction time was 60 minutes. Results show that the highest yields of bio-crude oil is 71.40% by using raw rubber sheets as raw material, while the bio-crude oil yield from using cup lumps, and Para rubber latex are 70.03% and 22.47% respectively. The Fourier Transform Infrared Spectrometer (FT-IR) analysis shows peak absorbance at 2,920 cm–1, indicating the intensity of the absorbance of the alkane functional group (C-H) which indicates fuel oil property. This study shows the technical possibility of producing bio-crude oil from natural rubber in Thailand by-using the hydrothermal liquefaction process. This might be the alternative energy in the future and support the beneficial of using Para rubber as well.
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