Kinetics of synergistic effects in co-pyrolysis of biomass with plastic wastes

Burra, Kiran Raj Goud; Gupta, Ashwani K.

doi:10.1016/j.apenergy.2018.03.117

Cited by 227 publications

(73 citation statements)

References 27 publications

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“…To the contrary, its values varied widely with conversion as a sign of a complex process that cannot be explained by a single reaction that could be considered as a rate-determining step. To the best of our knowledge, only two studies have modelled the co-pyrolysis kinetics of biomass and plastics [5,31]. The pyrolysis kinetic model used by Oyedun et al [5] is based on a pseudo-component kinetic model for bamboo and PS feedstocks that represent groups of similar reactive species that undergo a particular mass loss process at the same rate in a given time [32].…”

Section: Introductionmentioning

confidence: 99%

“…The pyrolysis kinetic model used by Oyedun et al [5] is based on a pseudo-component kinetic model for bamboo and PS feedstocks that represent groups of similar reactive species that undergo a particular mass loss process at the same rate in a given time [32]. The pyrolysis kinetic model used by Burra et al [31] is a first-order distributed activation energy model (DAEM) with 5 pseudo-components.…”

Section: Introductionmentioning

confidence: 99%

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Kinetic study for the co-pyrolysis of lignocellulosic biomass and plastics using the distributed activation energy model

Navarro

López

Veses

et al. 2018

Energy

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Kinetic study for the co-pyrolysis of lignocellulosic biomass and plastics using the distributed activation energy model

Navarro

López

Veses

et al. 2018

Energy

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“…This may be explained that a higher effective H/C eff molar ratio in feedstock caused by higher amount of HDPE leads to the www.advsustainsys.com © 2020 Wiley-VCH GmbH release of more H and OH radicals during the gasification process, accelerating the cracking of the organic components in feedstock. [20] Figure 1d provides details of the variations of H 2 yield with time at different HDPE ratios, showing that the change trend of the H 2 yield at different HDPE ratios remains roughly consistent. The instantaneous H 2 yield increases rapidly in the opening phase of gasification and then smoothly declines.…”

Section: Effect Of Biomass/plastic Ratiomentioning

confidence: 70%

“…The intent of this section is to explore the product distribution (char, tar, and gas) and gas properties at different values of input power (16,18,20,22, and 24 kW). It is worthwhile mentioning that the temperature of the reaction zone edge has a nearly linear correlation with input power (Table S1, Supporting Information).…”

Section: Effect Of Input Powermentioning

confidence: 99%

“…Several authors reported that the synergetic interactions between intermediate species from biomass and plastic during the cogasification process could improve the hydrogen production in final gas product. [19][20][21] Moreover, cogasification of biomass and plastic could maintain a steady supply of the feedstock to overcome the seasonal fluctuation of biomass availability and could provide a suitable waste plastic management method for recovering energy and reducing environmental risks. However, no clear advance has been so far seen in plasma gasification of biomass and plastic mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen‐Rich Syngas Production by DC Thermal Plasma Steam Gasification from Biomass and Plastic Mixtures

Chu

Wang

et al. 2020

Advanced Sustainable Systems

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However, some limitations of conventional steam gasification still need to be overcome, such as low-purity hydrogen, low reaction temperature, and high tar content. [5,6] Recently, thermal plasma gasification has been under active development. Plasma could provide extreme high temperature and high reactive species for intensification of gasification, which can decompose more than 90% organic components into syngas and break complex long-chain hydrocarbons down without catalysts. [7] Accordingly, the syngas from plasma gasification contains more hydrogen, less tar, and less contaminants than conventional gasification. [8] Hlína et al. [9] indicated that the concentration of tar in the wood plasma gasification syngas (<10 mg Nm −3) was much lower than that of conventional gasification. Luca et al. [10] theoretically demonstrated that the volume fractions of CO and H 2 in plasma gasification syngas were 8% and 7%, respectively, higher than those in entrained flow gasification syngas. A twostage steam plasma gasification process indicated that molar fractions of hydrogen in the product gases were well over 50% for six different types of biomass. [11] Rutberg et al. [12] reported a novel three-phase, steam-air plasma process of high caloric waste. The torch input power is 52-86 kW, and the molar fractions of H 2 and CO in the syngas are around 60% and 30%, respectively. These studies suggest that plasma gasification is a promising hydrogen production technology. There have been studies highlighting the impact of different operating variables on syngas properties during the plasma gasification. Zhang et al. [13] demonstrated that high-temperature steam had a positive impact on the overall gas yield and the lower heating value (LHV) of syngas. A parameter study based on a simulated PGM (plasma gasification melting) process suggested that plasma power, air feeding rate, and steam feeding rate were positive for energy and exergy efficiency. [14] Favas et al. [15] indicated that low temperatures had a more positive effect on the production of hydrogen, while high air equivalence ratio (ER) was not favorable to hydrogen production. However, integrated analysis of the different parameters cannot provide a complete picture of their effects. The synergy effects of different condition parameters and the internal mechanisms behind them need further investigation. Redundancy analysis (RDA) is a powerful chemometric tool for simultaneously evaluating Recently, thermal plasma gasification has attracted much attention due to hydrogen-rich syngas production. In this research, wood sawdust and high density polyethylene (HDPE) mixtures have been investigated under plasma steam gasification with various HDPE contents (0-100%), at different input plasma powers (16-24 kW) and varying steam flow/carbon flow (S/C) ratios (0.2-1.8). The single-factor analysis indicates that the real H 2 yield at 80 wt% HDPE is 23.99% higher than the theoretically calculated results. This significant improvement in hydrogen yield confirms the synergetic gasif...

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Porous carbon nanosheet with high surface area derived from waste poly(ethylene terephthalate) for supercapacitor applications

Wen

Kierzek

Min

et al. 2019

J of Applied Polymer Sci

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Converting waste plastics into valuable carbon materials has obtained increasing attention. In addition, carbon materials have shown to be the ideal electrode materials for double-layer supercapacitors owing to their large specific surface area, high electrical conductivity, and stable physicochemical properties. Herein, an easily operated approach is established to efficiently convert waste poly(ethylene terephthalate) beverage bottles into porous carbon nanosheet (PCNS) through the combined processes of catalytic carbonization and KOH activation. PCNS features an ultrahigh specific surface area (2236 m 2 g −1 ), hierarchically porous architecture, and a large pore volume (3.0 cm 3 g −1 ). Such excellent physicochemical properties conjointly contribute to the outstanding supercapacitive performance: 169 F g −1 (6 M KOH) and 135 F g −1 (1 M Na 2 SO 4 ). Furthermore, PCNS shows a high capacitance of 121 F g −1 and a corresponding energy density of 30.6 Wh kg −1 at 0.2 A g −1 in the electrolyte of 1 M TEATFB/PC. When the current density increases to 10 A g −1 , the capacitance remains at 95 F g −1 , indicating the extraordinary rate capability. This work not only proposes a facile approach to synthesize PCNS for supercapacitors, but also puts forward a potential sustainable way to recycle waste plastics and further hopefully mitigates the waste plastics-related environmental issues.

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Kinetics of synergistic effects in co-pyrolysis of biomass with plastic wastes

Cited by 227 publications

References 27 publications

Kinetic study for the co-pyrolysis of lignocellulosic biomass and plastics using the distributed activation energy model

Kinetic study for the co-pyrolysis of lignocellulosic biomass and plastics using the distributed activation energy model

Hydrogen‐Rich Syngas Production by DC Thermal Plasma Steam Gasification from Biomass and Plastic Mixtures

Porous carbon nanosheet with high surface area derived from waste poly(ethylene terephthalate) for supercapacitor applications

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