Enhancement of bio-oil obtained from co-pyrolysis of lignocellulose biomass and LDPE by using a natural zeolite

Rocha, María Victoria; Vinuesa, Ariel José; Pierella, Liliana B.; Renzini, María Soledad

doi:10.1016/j.tsep.2020.100654

Cited by 12 publications

(6 citation statements)

References 39 publications

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“…The obtained catalysts have low silicium to alumina ratio (SiO 2 /Al 2 O 3 ). Low SiO 2 /Al 2 O 3 ratio is related to the high acidity [52,53] and lower mass loss rates. Only a negligible difference was obtained between mass loss rates of the original samples and the samples in the presence of catalysts.…”

Section: Results Of Thermogravimetric Analysis and Kinetic Study 31 T...mentioning

confidence: 99%

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Influence of Natural Zeolites on the Thermal Decomposition of Multi-layered Plastic Waste

Djurdjevic,

Papuga,

Kremer

et al. 2024

Teh. glas. (Online)

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The pyrolysis process drove scientific attention lately, as it represents the basis for the production of second generation of synthetic fuels and other chemicals. The process takes place in inert atmosphere, and liquids, gases, and small number of solid particles represent main reaction products. Pyrolysis can be thermal or catalytic. Thermal pyrolysis requires very high temperatures, and products do not have high quality, while addition of catalysts reduces the reaction time, there is a better conversion rate, and lower operation temperature. In this paper, multi-layered plastic waste is used as raw material for thermogravimetric analysis (TGA). The composition of used plastic waste was previously determined based on the analysis of a large number of samples from fraction of mechanically non-recyclable plastic waste collected from waste treatment facilities in Croatia. Two natural zeolites with the most promising catalysts properties were selected for the reaction. Thermogravimetric analysis was used to understand the pyrolysis process of multi layered plastic waste and to determine the thermochemical behavior and kinetics. Kinetic analysis was performed using the isoconversional Kissinger-Akahira-Sunose method. The aim of this paper was to investigate how selected natural zeolite catalysts influence the kinetics of the pyrolysis process of multi-layered plastic waste.

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Section: Results Of Thermogravimetric Analysis and Kinetic Study 31 T...mentioning

confidence: 99%

“…1, microscopic tests have shown that natural zeolite consists of a large number of plates, clearly defined shapes, many of them have a plate shape, which is characteristic for the crystal structure of clinoptilolite [50]. Following studies have used clinoptilite natural zeolites for pyrolysis of plastic waste [51,52].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Influence of Natural Zeolites on the Thermal Decomposition of Multi-layered Plastic Waste

Djurdjevic,

Papuga,

Kremer

et al. 2024

Teh. glas. (Online)

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“…Further research was conducted in an attempt to reduce the emission of harmful compounds during the pyrolysis of the densified PH samples. [38][39][40] that at this temperature an intensive depolymerization of LDPE takes place. Xiong et al [16] suggested that a decrease in the mass loss before depolymerization of HDPE takes place as a result of persistence of volatiles from biomass in melting polymer.…”

Section: Pyrolysis Of Ph Samples With Ctp Nl and Ldpe Additivesmentioning

confidence: 92%

“…The increase in yield of volatiles during the co-pyrolysis of densified PH sample with additives raises a question about the presence of condensed products in these volatiles. [38][39][40] that at this temperature an intensive depolymerization of LDPE takes place. Xiong et al [16] suggested that a decrease in the mass loss before depolymerization of HDPE takes place as a result of persistence of volatiles from biomass in melting polymer.…”

Section: Pyrolysis Of Ph Samples With Ctp Nl and Ldpe Additivesmentioning

confidence: 92%

An Analysis of the Influence of Low Density Polyethylene, Novolac, and Coal Tar Pitch Additives on the Decrease in Content of Impurities Emitted from Densified Pea Husks during the Process of Their Pyrolysis

2023

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The course of pyrolysis of pea husks was studied. It was stated that the compaction of a sample during its pyrolysis causes an almost two-fold increase in the content of hydrocarbons in the composition of volatile products in the temperature range of 350–470 °C. Low density polyethylene (LDPE), novolac, and coal tar pitch (CTP) wastes were added to feedstocks in the amount of 2 wt% in order to decrease the contribution of saturated and unsaturated hydrocarbons along with oxygen-containing compounds in volatile products. The analysis of the obtained products of pyrolysis was conducted using the techniques of thermogravimetry/Fourier transform infrared spectroscopy (TG/FT-IR), attenuated total reflectance (ATR) and ultraviolet (UV)-spectroscopies, gas chromatography-mass spectrometry (GCMS), X-ray diffractions (XRD), scanning electron microscopy (SEM), and energy dispersive X-ray analysis (EDX). It was determined that pitch took the first place in a series of effectiveness in decreasing the content of harmful compounds in pyrolysis products; novolac was the second. A temperature of 370 °C (CTP) lowers the contribution of compounds with carbonyl groups (by approx. 2.7 times) and the contribution of alcohols, phenols, and esters (by approx. 4.4 times). At a temperature of 465 °C, this additive reduces the contribution of saturated and unsaturated hydrocarbons in the composition of volatiles (by approx. 5.8 times) and at a temperature of 520 °C, a more substantial decrease is observed (by approx. 14.3 times). During the pyrolysis in the temperature range of 420–520 °C, LDPE actively emits its own products of decomposition in the form of aliphatic hydrocarbons that negatively affect the environment. The composition of condensed pyrolysis products changes under the influence of additives. In water condensates, the concentration of determined phenols and anhydrosugars increases slightly under the influence of additives. The SEM and XRD investigations proved that inorganics interact with volatile pyrolysis products from the blends of pea husks with additives and change their composition. After the transformation of chemical composition, inorganics catalyse secondary reactions that take place in the pyrolysis products of blends.

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“…The inclusion of a catalyst during the degradation process offers several benefits, such as shorter reaction times, reduced degradation temperatures, increased degradation extent, minimized solid residue content in the final products, and a more focused distribution of end products [40,46]. The catalyst also helps to guide the reaction in the desired direction through interactions among its composition, the reaction pyrolyzates, and the intended products [47]. The effectiveness of the catalyst depends on its porosity, redox, and acidity qualities.…”

Section: Co-pyrolysis and Catalytic Co-pyrolysis (Ccp) Of Biomass-pla...mentioning

confidence: 99%

A Review on Catalytic Co-Pyrolysis of Biomass and Plastics Waste as a Thermochemical Conversion to Produce Valuable Products

Mo,

Ullah,

Zada

et al. 2023

Energies

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In order to satisfy the increasing need for renewable chemicals and fuels, it is important to replace petroleum-based products with alternative feedstocks. Lignocellulosic biomass is considered to be the most capable alternative source for producing sustainable biofuels. Catalytic co-pyrolysis (CCP) is a process that involves simultaneously pyrolyzing biomass and plastics to produce a combination of liquid and gaseous products, such as bio-oil and syngas. Catalysts are used to raise the reaction degree and the selectivity of the co-pyrolysis process, with the choice of catalyst dependent on the physico-chemical features of the feedstock. Catalytic pyrolysis is a useful method for producing high-quality biofuels directly from biomass, although it typically yields a modest amount of aromatic hydrocarbons (HCs) and a large amount of coke, even with highly effective catalysts. Adding a co-reactant high in hydrogen to the CCP process can significantly increase the yield of aromatics while reducing coke formation. The use of CCP can help to address the environmental issues related to waste plastic disposal and improve energy security. This review article thoroughly discusses the process and mechanism of catalytic co-pyrolysis, the influence of plastics on the process, and how the addition of plastics can improve the quality and output of bio-oil while reducing the production of oxygenated compounds and coke. The importance of various catalysts (such as biochar, activated carbon, and acid and base catalysts) in improving the production and quality of obtained products is also compared and discussed.

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Enhancement of bio-oil obtained from co-pyrolysis of lignocellulose biomass and LDPE by using a natural zeolite

Cited by 12 publications

References 39 publications

Influence of Natural Zeolites on the Thermal Decomposition of Multi-layered Plastic Waste

Influence of Natural Zeolites on the Thermal Decomposition of Multi-layered Plastic Waste

An Analysis of the Influence of Low Density Polyethylene, Novolac, and Coal Tar Pitch Additives on the Decrease in Content of Impurities Emitted from Densified Pea Husks during the Process of Their Pyrolysis

A Review on Catalytic Co-Pyrolysis of Biomass and Plastics Waste as a Thermochemical Conversion to Produce Valuable Products

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