Catalytic pyrolysis of waste plastic into liquid fuel

Natural Buton Asphalt (Asbuton) is a naturally occurring asphalt that is contained in rock deposit located in Buton Island, Indonesia. Asbuton is mostly used as a mixture of bitumen since it has the potential to be cracked into hydrocarbon and produced as a liquid fuel for energy consumption. The present study aims to investigate the effect of pyrolysis temperature and the mass ratio of the Asbuton with catalyst on the Asbuton conversion. The pyrolysis process is carried out on a batch using vacuum reactor with various temperatures and mass ratios of catalyst to Asbuton. The gas coming out of the process is passed through the condenser, where the condensed gas (liquid product) is collected in the flask, whereas the uncondensed gas (gas product) is collected in a gas holder and the yield is analyzed upon the pyrolysis process completion. The respond parameter of the catalytic pyrolysis are oil flammability, yield, and oil density. The synthesized ZSM-5 catalyst is more effective for the Asbuton bitumen cracking process as opposed to the Natural Zeolite. Furthermore, it is investigated that the most optimum operating condition throughout this experiment was 70.07% and obtained at 350 °C with 9% ZSM-5 catalyst. In terms of product characterization, the liquid product can be ignited during the flame test. From the S.G. and API gravity values, it is suggested that the products belong to crude oil range, and thus, confirming that Asbuton has great potentials to be developed into alternative fuel.

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Recycling of waste plastics to liquid fuel mixture over composite zeolites catalysts

Chemical Bulletin of Kazakh National University ◽

10.15328/cb1117 ◽

2021 ◽

pp. 12-18

Author(s):

Firuza Akhmetova ◽

Yermek Aubakirov ◽

Zheneta Tashmukhambetova ◽

Larissa Sassykova ◽

Huseyin Arbag ◽

...

Keyword(s):

Natural Zeolite ◽

Liquid Fuel ◽

Motor Fuel ◽

Fuel Mixture ◽

Daily Basis ◽

Plastic Waste ◽

Chemical Recycling ◽

High Quality ◽

Waste Plastic ◽

Liquid Products

Plastic waste production and consumption is increasing at an alarming rate with the increase of the human population, rapid economic growth, continuous urbanization, and changes in lifestyle. In addition, the short life span of plastic accelerates the production of plastic waste on a daily basis. Plastic waste recycling is carried out in different ways, but in most developing countries, open or landfill disposal is a common practice for plastic waste management. Plastic recycling into feedstocks, also known as chemical recycling, is encouraged all over the world. One such area is the thermal and catalytic thermal degradation of plastics into hydrocarbon fractions, which can be used as high-quality motor fuel after appropriate processing. Hydrocracking in the presence of a catalyst is a promising method of converting waste plastic materials to high quality liquid transportation fuels with decreased amounts of olefins and heteroatoms such as S, N, Cl, N, and O. The article deals with the study of hydrocracking of waste plastic into high quality liquid fuel on various catalysts based on natural zeolite deposits Taizhuzgen. The aim of the work is to determine the effect of new composite catalysts on the yield of liquid products by studying the specific surface and porous structure based on natural zeolite modified with Mо salt. It is established that the modification of natural zeolite with Mo affects the morphology of the catalyst, therefore, the obtained catalysts have different effects on the yield and composition of liquid fractions during the hydrogenation thermocatalytic transformation of hydrocarbons. The highest yield of liquid products (61.56%) was achieved using the 2% Mo/Taizhuzgen zeolite catalyst, which was chosen as optimal.

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Effect of Potassium Carbonate Catalyst on Pyrolysis of Milicia excelsa in a Fixed Bed Reactor

FUOYE Journal of Engineering and Technology ◽

10.46792/fuoyejet.v5i2.517 ◽

2020 ◽

Vol 5 (2) ◽

Author(s):

Pious O Okekunle ◽

Oluwatobi S Awani ◽

Daniel O Jimoh

Keyword(s):

Potassium Carbonate ◽

Liquid Fuel ◽

Catalytic Pyrolysis ◽

Fixed Bed ◽

Product Distribution ◽

Fixed Bed Reactor ◽

Catalyst Amount ◽

Different Temperatures ◽

Definite Pattern ◽

Milicia Excelsa

The effect of potassium carbonate catalyst on the products distribution from pyrolysis of Milicia excelsa (Iroko) at various temperatures (400, 500 and 600 oC) was investigated. Milicia excelsa sawdust was obtained from a sawmill in Ogbomoso, South-Western Nigeria and was sundried for five days in order to reduce its moisture content. Catalytic pyrolysis of the sawdust was performed with different amounts of catalyst (10, 20, 30 and 40 wt.%). Non-catalytic pyrolysis was also performed for the same temperatures and the products distributions from both batches were compared. Char yield generally increased with increase in catalyst amount for all the temperatures considered. Tar yield did not follow any definite pattern with increasing amount of catalyst as different trends were obtained for different temperatures. Gas yield generally decreased with increase in catalyst amount in the feed. Char yields from non-catalytic experiments were higher than those obtained from catalytic runs, with the highest value of 68% at 400 oC. Tar yields from catalytic pyrolysis were higher than those from non-catalytic process at 400 oC (biomass/catalyst ratio of 90/10) and at 500 oC (biomass/catalyst ratios of 70/70 and 60/40), the highest yield being 29.47% at 500 oC and biomass/catalyst ratio of 60/40. Gas yields from catalytic pyrolysis were higher than those from non-catalytic runs except at 500 oC (biomass/catalyst ratio of 60/40), the highest being 51.3% at 600 oC (biomass/catalyst ratio of 90/10). By making use of appropriate biomass/catalyst ratio and temperature, the yield of liquid fuel from catalytic pyrolysis of Milicia excelsa can be increased.Keywords— Catalyst, potassium carbonate, pyrolysis, biomass, product distribution

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First Waste Plastic Conversion into Liquid Fuel by using Muffle Furnace through Reactor

International Journal of Energy and Engineering ◽

10.5923/j.ijee.20120206.04 ◽

2012 ◽

Vol 2 (6) ◽

pp. 293-303 ◽

Cited By ~ 1

Author(s):

Moinuddin Sarker ◽

Mohammad Mamunor Rashid ◽

Mohammed Molla

Keyword(s):

Liquid Fuel ◽

Muffle Furnace ◽

Waste Plastic

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