Co-pyrolysis of rice straw and polypropylene using fixed-bed pyrolyzer

Abstract

The present work encompasses the impact of temperature (450, 500, 550, 600 °C) on the properties of pyrolysis oil and on other product yield for the co-pyrolysis of Polypropylene (PP) plastics and rice straw. Co-pyrolysis of PP plastic and rice straw were conducted in a fixed-bed drop type pyrolyzer under an inert condition to attain maximum oil yield. Physically, the pyrolysis oil is dark-brown in colour with free flowing and has a strong acrid smell. Copyrolysis between these typically obtained in maximum pyrolysis oil yields up to 69% by ratio 1:1 at a maximum temperature of 550 °C. From the maximum yield of pyrolysis oil, characterization of pyrolysis product and effect of biomass type of the composition were evaluated. Pyrolysis oil contains a high water content of 66.137 wt.%. Furfural, 2- methylnaphthalene, tetrahydrofuran (THF), toluene and acetaldehyde were the major organic compounds found in pyrolysis oil of rice straw mixed with PP. Bio-char collected from co-pyrolysis of rice straw mixed with PP plastic has high calorific value of 21.190 kJ/g and also carbon content with 59.02 wt.% and could contribute to high heating value. The non-condensable gases consist of hydrogen, carbon monoxide, and methane as the major gas components.

Production and characterization of the maximum liquid product obtained from co-pyrolysis of sugarcane bagasse and thermocol waste

“…The However, the increase in bio-oil yield is mostly due to radical interaction occurring between SB and TW which leads to a synergistic effect. Several studies are reporting in the literature that established a maximum temperature as 550°C for co-pyrolysis (Chen et al 2016;Izzatie et al 2016;Sanahuja-Parejo et al. 2019; Somasundaram and k 2019).…”

Production and characterization of the maximum liquid product obtained from co-pyrolysis of sugarcane bagasse and thermocol waste

“…The However, the increase in bio-oil yield is mostly due to radical interaction occurring between SB and TW which leads to a synergistic effect. Several studies are reporting in the literature that established a maximum temperature as 550°C for co-pyrolysis (Chen et al 2016;Izzatie et al 2016;Sanahuja-Parejo et al 2019;Somasundaram and k 2019). In the utmost part of our study, by considering 550ºC as the maximum temperature, the co-pyrolysis was conducted at various blending ratios of 1:0, 1:1.…”

Influence of microwave pre-treated Palm Kernel Shell and Mukah Balingian coal on co-gasification

“…However, this direction difficult to achieve due to the increasing in energy demand that had caused the shortage supply and reducing of high rank coal [5]. Consequently, one of the approaches is to utilise the abundant low rank coal and biomass in thermal conversion [6].…”

“…Similarly, the utilization of biomass which is a renewable and environmental friendly resource during gasification imposed several problems. Untreated biomass has relatively low energy, high moisture and oxygenated compound, hygroscopic behavior and poor grindability [6][7][8]. Therefore, the pretreated biomass which has been improved in energy density, hydrophobicity and grindability overcome the weakness of untreated biomass, then driven to be applied in thermochemical conversion [12].…”