Effect of varying fraction of polypropylene waste on co-pyrolysis of Delonix regia and Polyalthia longifolia leaves

Kishore, Nanda; Gupta, Shivam; Aravind, S.V.; Ahmed, Gaffer

doi:10.1016/j.crgsc.2021.100233

Cited by 13 publications

(2 citation statements)

References 42 publications

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“…Several studies on polypropylene (PP) have been reported by [2] at 480 ℃ to produce light naptha (C 5 -C 7 ) hydrocarbons of around 13.1% and 16.7% and heavy naphta (C 8 -C 12 ) of between 69.1% and 87.2%. In addition, [3] reported that co-pyrolysis of Delonix Regia, Polyalthia leaves, and PP increased the heating value of bio-oil from 22.55 MJ/kg to 34.06 MJ/kg with an increase in PP from 0 wt% to 50 wt%. Ko et al [4] also investigated the pyrolysis of PP into fuel at four different temperatures: 450, 488, 525, and 600 °C.…”

Section: Introductionmentioning

confidence: 99%

Bio-oil production from pyrolysis of Polypropylene using dolomite catalyst

Yorinda Buyang,

Yenni Pintauli Pasaribu,

Paulus Mangera

et al. 2023

Technium

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Polypropylene is converted into bio-oil through catalytic pyrolysis using dolomite as a catalyst. The purpose of this study was to determine the effect of using dolomite directly without prior treatment on the bio-oil produced from the pyrolysis of propylene plastic. The amount of loading catalyst used is 5%. Increasing the pyrolysis temperature from 350 to 450 ℃ increased bio-oil from 35.56 wt% to 64.84 wt% by reducing gas to 21.08 wt%. In thermal pyrolysis, the production of bio-oil is 85 wt% with 19.30 wt% char. In the GC-MS analysis of bio-oil from thermal and catalystic pyrolysis, the most dominant alcohol composition was obtained. Based on the result of the analysis, it can be concluded that the bio-oil obtained can be further developed into fuel.

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Section: Introductionmentioning

confidence: 99%

Bio-oil production from pyrolysis of Polypropylene using dolomite catalyst

Yorinda Buyang,

Yenni Pintauli Pasaribu,

Paulus Mangera

et al. 2023

Technium

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“…Combined modeling and experimental works have previously elucidated the importance of directional permeability of biomass during pyrolysis (Di Blasi, 1998;Pecha et al, 2021). Other factors such as density and orientation in a gas stream also impact pyrolysis product quality and yield and have been investigated in studies such as in Kumari et al (2022) and Pecha et al (2017), but were not examined in this study as these properties can be measured without detailed information of the 3D microstructure of the material.…”

Section: Introductionmentioning

confidence: 99%

Measurement of Transport Properties of Woody Biomass Feedstock Particles Before and After Pyrolysis by Numerical Analysis of X-Ray Tomographic Reconstructions

et al. 2022

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Lignocellulosic biomass has a complex, species-specific microstructure that governs heat and mass transport during conversion processes. A quantitative understanding of the evolution of pore size and structure is critical to optimize conversion processes for biofuel and bio-based chemical production. Further, improving our understanding of the microstructure of biochar coproduct will accelerate development of its myriad applications. This work quantitatively compares the microstructural features and the anisotropic permeabilities of two woody feedstocks, red oak and Douglas fir, using X-ray computed tomography (XCT) before and after the feedstocks are subjected to pyrolysis. Quantitative analysis of the three-dimensional (3D) reconstructions allows for direct calculations of void fractions, pore size distributions and tortuosity factors. Next, 3D images are imported into an immersed boundary based finite volume solver to simulate gas flow through the porous structure and to directly calculate the principal permeabilities along longitudinal, radial, and tangential directions. The permeabilities of native biomass are seen to differ by three to four orders of magnitude in the different principal directions, but we find that this anisotropy is substantially reduced in the biochar formed during pyrolysis. The quantitative transport properties reported here enhance the ability of pyrolysis simulations to account for feedstock-specific effects and thereby provide a useful touchstone for the biorefining community.

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