scholarly journals Co-Pyrolysis of Neem Wood Bark and Low-Density Polyethylene: Lnfluence of Plastic on Pyrolysis Product Distribution and Bio-Oil Characterization

2021 ◽  
Author(s):  
Venkatachalam Selvaraj Kaushik ◽  
Chandrasekaran Sowmya Dhanalakshmi ◽  
Petchimuthu Madhu ◽  
Palanisamy Tamilselvam
Keyword(s):  
Maximum Yield ◽  
Pyrolysis Product ◽  
Product Distribution ◽  
Low Density Polyethylene ◽  
Chemical Compositions ◽  
Low Density ◽  
Oxygenated Compounds ◽  
Bio Oil ◽  
Wood Bark ◽  
Pyrolytic Oil

Abstract In this study, the investigation on effect of plastic during co-pyrolysis with biomass has been carried out in a fixed reactor. Pyrolysis of neem wood bark (NB), low density polyethylene (LDPE) and their blends at different ratios is performed in order to evaluate the product distribution. The effects of reaction temperature, NB-to-LDPE blend ratio on product distribution and chemical compositions of bio-oil are examined. The co-pyrolysis of NB and LDPE increased the yield and quality of the bio-oil. The experiments are conducted under different LDPE addition percentage such as 20%, 40%, 50%, 60% and 80%. Under the optimum experimental condition of 60% addition of LDPE and temperature of 450°C, the maximum yield of bio-oil (64.8 wt%) and hydrocarbon (75.2%) are achieved with the lowest yield of oxygenated compounds. The calorific value of the co-pyrolytic oil is found to be higher than that of NB pyrolytic oil. The relation between NB and LDPE during co-pyrolysis has been validated by GC–MS analysis, which shows in decrease of oxygenated compounds.

Fuel Property of Pyrolytic-Oil from Para Rubber De-Oiled Seed Residue

2015 ◽  
Vol 781 ◽  
pp. 643-646
Author(s):  
Tanakorn Unpinit ◽  
Mallika Thabuot
Keyword(s):  
Maximum Yield ◽  
Degradation Behavior ◽  
Fuel Property ◽  
Heating Value ◽  
Bio Oil ◽  
Thermal Degradation Behavior ◽  
Clay Catalyst ◽  
Pyrolytic Oil ◽  
Loss Characteristic ◽  
Major Hydrocarbon

In this report, bio-oil was produced from the pyrolysis of Para Rubber de-oiled seed residue mixing with clay catalyst of 5-20%wt. under 400 to 600°C. Pyrolytic oil was determined for the thermal weight loss characteristic, heating value, structural and physical properties. Results showed the yield of pyrolytic oil increased with the increasing catalyst percentage, maximum yield of 24.59%wt. was revealed from the pyrolysis at 550°C. Using clay catalyst of 5%wt. at 400°C gave bio-oil with the highest heating value up to 49.17 MJ/kg. While pyrolytic oil which obtained from the mixture of de-oiled seed residue and 10%wt. clay at 400°C showed the thermal degradation behavior in the range of diesel and gasoline. All pyrolytic oils produced in this study have the major hydrocarbon structure of C-H stretching as investigated by FTIR. However, this product should be upgraded to get better properties closed to the commercial fuel.

Scrap Tires Pyrolysis: Product Yields, Properties and Chemical Compositions of Pyrolytic Oil

2018 ◽  
Vol 91 (10) ◽  
pp. 1603-1611 ◽  
Author(s):  
S. Chouaya ◽  
M. A. Abbassi ◽  
R. B. Younes ◽  
A. Zoulalian
Keyword(s):  
Pyrolysis Product ◽  
Chemical Compositions ◽  
Scrap Tires ◽  
Product Yields ◽  
Pyrolytic Oil

Production of Renewable Petrochemicals from Catalytic Co-Pyrolysis of Beech Wood and Low-Density Polyethylene with Mesoporous Bifunctional ZSM-5 Zeolites

2015 ◽  
Vol 768 ◽  
pp. 392-401
Author(s):  
Guo Qiang Zhou ◽  
Wei Kun Yao ◽  
Yu Jue Wang ◽  
Yu Feng ◽  
Yan Qing Yu ◽  
...  
Keyword(s):  
Polyaromatic Hydrocarbons ◽  
Beech Wood ◽  
Product Distribution ◽  
Solid Wastes ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Mass Ratio ◽  
Diffusion Property ◽  
Naoh Solution ◽  
Monoaromatic Hydrocarbons

This study investigated catalytic fast pyrolysis (CFP) of beech wood, low-density polyethylene (LDPE), and their mixture (mass ratio of 1) with a conventional microporous ZSM-5 and mesoporous bifunctional Zn/ZSM-5meso zeolite prepared by desilication of the conventional ZSM-5 with NaOH solution and then impregnation with Zn.The generation of mesopores by desilication improved the diffusion property of the zeolite, which decreased the formation of undesired polyaromatic hydrocarbons from secondary polymerization reactions of monoaromatics in CFP. In addition, the impregnation of Zn increased the dehydrogenation activity of the zeolites, and thus enhanced the conversion of low-value alkanes to valuable olefins. As a result, Zn/ZSM-5meso produced higher yields (56.0 C%) of valuable petrochemicals (monoaromatic hydrocarbons and olefins) and lower yields of undesired polyaromatics (1.70 C%) and alkanes (10.2 C%) in co-feed CFP of the beech wood and LDPE mixture than ZSM-5 (48.2 C%, 4.18 C%, and 18.7 C% for petrochemicals, polyaromatics, and alkanes, respectively).ZSM-5 desilication and impregnation with Zn thus have a beneficial effect on improve the product distribution in CFP of biomass and plastic mixtures. In addition, the results suggest that CFP may provide a promising technology for producing renewable petrochemicals from municipal and agricultural solid wastes, which usually contain high contents of biomass and waste plastics.

scholarly journals Baseline Data of Low-Density Polyethylene Continuous Pyrolysis for Liquid Fuel Manufacture

Recycling ◽  
2022 ◽  
Vol 7 (1) ◽  
pp. 2
Author(s):  
Aleksandr Ketov ◽  
Vladimir Korotaev ◽  
Natalia Sliusar ◽  
Vladivir Bosnic ◽  
Marina Krasnovskikh ◽  
...  
Keyword(s):  
Liquid Fuel ◽  
Pyrolytic Carbon ◽  
Poor Quality ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Polymer Waste ◽  
Bio Oil ◽  
Heating Oil ◽  
Small Parts

The recycling of end-of-life plastics is a problem, since small parts can be returned into circulation. The rest is burned, landfilled or recycled into low-quality heating oil by pyrolysis methods. The disadvantages of this method are the need to dispose the formed by-product, pyrolytic carbon, the poor quality of produced liquid fuel and the low productivity of the method associated with the periodicity of the process. In this work, methods of thermogravimetry and chromatography–mass spectrometry (GC-MS) have been used to study the co-pyrolysis products of low-density polyethylene (LDPE) and oxygen-containing substances at the pressures of 4–8 MPa and temperatures of 520–620 °C. Experiments have highlighted the conditions needed for producing of high-quality liquid fuel. Initial data have been prepared for the design of a continuous pyrolysis reactor to dispose polymer waste for the production of bio-oil which would be available to enter the petrochemical products market.

Structural Characterization and Mechanical Behaviour of LDPE Structural Foams. A Comparison with Conventional Foams

2009 ◽  
Vol 28 (4) ◽  
pp. 289-302 ◽  
Author(s):  
J. Escudero ◽  
E. Solórzano ◽  
M.A. Rodriguez-Perez ◽  
F. Garcia-Moreno ◽  
J.A. De Saja
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behaviour ◽  
Sandwich Structure ◽  
Low Density Polyethylene ◽  
Similar Process ◽  
Chemical Compositions ◽  
Low Density ◽  
Alternative Route ◽  
Made In ◽  
Structural Foams

Structural foams are composed of two solid layers enclosing a foamed core. The application of sandwich structural foams has rapidly increased in the last decade. Injection moulding is currently used to produce these foams, being not common to produce conventional foams of similar densities and chemical compositions in a similar process. In this paper an alternative route to produce structural foams has been used. This method allows fabricating conventional foams with the same chemical composition and density than the structural foams, so comparisons between properties of both kinds of materials can be made in a proper way, i.e. avoiding effects of different chemical compositions and/or different densities. The structural and mechanical properties in tension, compression and bending have been characterized both for structural and conventional foams based on a low density polyethylene. The results have showed that the sandwich structure of structural foams improves a 50% the mechanical behaviour in bending, however no improvements in compression or tension have been found.

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