Two-stage thermal pyrolysis of plastic solid waste: Set-up and operative conditions investigation for gaseous fuel production

Waste Management, Journal Year: 2024, Volume and Issue: 179, P. 77 - 86

Published: March 11, 2024

In response to the escalating global challenge of mounting plastic waste and imperative adopt more sustainable practices for resource utilization, our study focuses on utilization solid (PSW) through a two-stage thermal pyrolysis process. This aims demonstrate its potential as high-performance alternative existing catalytic methods. The experimentation involved processing real scrap PSW material in lab-scale batch set-up, emphasizing optimizing residence time cracking reactor maximize gas yield lower heating value (LHV). underscores advantages employed apparatus comparative analysis with established set-up dedicated maximizing yield. Once operative conditions were explored, resulting products underwent detailed characterization assess their suitability fuel source. also presents practical application produced gaseous fuel, envisioning combustion an internal engine (ICE), known flexibility regarding properties. is demonstrated simulation conducted Unisim Design©. successful experimental showcased optimal achievements (>65 % w/w) LHV (∼41 MJ/kg), comparable that natural gas. emphasizes these alternatives replace fossil fuels, especially context ICE applications. integration plant promising prospects generating electricity transportation sector facilitating power heat reactors.

Language: Английский

---

Contaminant removal from plastic waste pyrolysis oil via depth filtration and the impact on chemical recycling: A simple solution with significant impact

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 473, P. 145259 - 145259

Published: Aug. 11, 2023

Language: Английский

---

Solar-driven reforming of waste polyester plastics into hydrogen over CdS/NiS catalyst

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 51, P. 91 - 103

Published: Aug. 26, 2023

Language: Английский

---

Chemical Upcycling of Waste Plastics to High Value‐Added Products via Pyrolysis: Current Trends, Future Perspectives, and Techno‐Feasibility Analysis

The Chemical Record, Journal Year: 2023, Volume and Issue: 23(4)

Published: Feb. 27, 2023

Abstract Chemical upcycling of waste plastics into high‐value‐added products is one the most effective, cost‐efficient, and environmentally beneficial solutions. Many studies have been published over past few years on topic recycling usable materials through a process called catalytic pyrolysis. There significant research gap that must be bridged in order to use pyrolysis produce high‐value products. This review focuses enhanced jet fuel, diesel oil, lubricants, aromatic compounds, syngas, other gases. Moreover, reaction mechanism, brief critical comparison different studies, as well techno‐feasibility analysis plastic proposed setup for commercialization also covered.

Language: Английский

---

Vision 2050: Reaction Engineering Roadmap

ACS Engineering Au, Journal Year: 2023, Volume and Issue: 3(6), P. 364 - 390

Published: Oct. 22, 2023

This perspective provides the collective opinions of a dozen chemical reaction engineers from academia and industry. In this sequel to "Vision 2020: Reaction Engineering Roadmap," published in 2001, we provide our about field engineering by addressing current situation, identifying barriers progress, recommending research directions context four industry sectors (basic chemicals, specialty pharmaceuticals, polymers) five technology areas (reactor system selection, design scale-up, mechanism development property estimation, catalysis, nonstandard reactor types, electrochemical systems). Our input report includes numerous recommendations regarding needs coming decades, including guidance for prioritizing efforts workforce development, measurement science, computational methods. We see important roles plastics circularity challenge, decarbonization processes, electrification reactors, conversion batch processes continuous intensified, dynamic processes.

Language: Английский

---

Ionic-Liquid-Mediated Deconstruction of Polymers for Advanced Recycling and Upcycling

ACS Macro Letters, Journal Year: 2023, Volume and Issue: 12(8), P. 1058 - 1070

Published: July 30, 2023

Ionic liquids (ILs) are a promising medium to assist in the advanced (chemical and biological) recycling of polymers, owing their tunable catalytic activity, tailorable chemical functionality, low vapor pressures, thermal stability. These unique physicochemical properties, combined with ILs' capacity solubilize plastics waste biopolymers, offer routes deconstruct polymers at reduced temperatures (and lower energy inputs) versus conventional bulk solvent-based methods, while also minimizing unwanted side reactions. In this Viewpoint, we discuss use ILs as catalysts mediators recycling, an emphasis on by examining interplay between IL chemistry deconstruction thermodynamics, kinetics, recovery, product recovery. We consider several potential environmental benefits concerns associated employing for over bulk- or solvent-mediated techniques, such escape volatilization, decreased demands, toxicity, persistence. By analyzing IL-mediated polymer across breadth macromolecular systems, identify recent innovations, current challenges, future opportunities application toward circular economies.

Language: Английский

---

Activation of inert triethylene tetramine-cured epoxy by sub-critical water decomposition

Reactive and Functional Polymers, Journal Year: 2023, Volume and Issue: 193, P. 105746 - 105746

Published: Oct. 19, 2023

Language: Английский

---

Characterization and evaluation of resource recovery potential of beach plastic wastes using analytical Py-GC/MS

Journal of Analytical and Applied Pyrolysis, Journal Year: 2023, Volume and Issue: 172, P. 105996 - 105996

Published: May 4, 2023

Language: Английский

---

Maximizing light olefin production via one-pot catalytic cracking of crude waste plastic pyrolysis oil

Fuel, Journal Year: 2023, Volume and Issue: 361, P. 130703 - 130703

Published: Dec. 26, 2023

Energy-efficient processes for converting polyolefinic waste plastics into light olefins are critical mitigating environmental pollution and reducing carbon emissions. In this study, an alternative recycling scheme, the catalytic cracking of crude plastic pyrolysis oil (WPPO) over microspherical P-modified steam-treated ZSM-5 (ms-P-HZSM5-S), was demonstrated compared to a state-of-the-art commercial thermal hydrotreated naphtha range WPPO. The C2–C4 yield achieved by WPPO (56.6 wt%) exceeded those (36.1 wt%), (23.1 (29.7 which indicated superiority as feedstock. However, during deactivation test ms-P-HZSM5-S, coke accumulation resulted in rapid decline yields ethylene (from 17.2 14.6 propylene 25.8 23.6 benzene, toluene, xylenes 16.1 13.4 after reaction time 810 s (temperature = 680 °C, weight hourly space velocity 16 h−1). Nevertheless, performance fully restored through regeneration air at 730 confirmed viability continuous operation involving successive reaction–regeneration cycles. These findings can be leveraged devise new approach, integrated with (e.g., circulating fluidized bed reactor) system, could offer several advantages strategy, including posttreatment-free utilization entire range, higher yields, removal, reduced energy consumption, non-necessity H2.

Language: Английский

---

Economic Assessment of Polypropylene Waste (PP) Pyrolysis in Circular Economy and Industrial Symbiosis

Energies, Journal Year: 2023, Volume and Issue: 16(2), P. 593 - 593

Published: Jan. 4, 2023

Plastic waste has a high energy content and can be utilized as an source. This study aims to assess the economic feasibility of polypropylene plastic (PP) pyrolysis. A literature review was carried out determine optimal pyrolysis conditions for oil production. The preferred temperature ranges from 450 °C 550 °C, where yields vary 82 wt.% 92.3 wt.%. Two scenarios were studied. In first scenario, gas is used heating needs, whereas in second natural used. An overview performance plant with capacity 200,000 t/year presented. Based on results, economically viable, it presents profits short payback time both considered. Although annual revenues are smaller scenario 1, significant reduction operating costs makes this preferable. amount 37.3 M€, while return investment 81% 1.16 years. 2, although still feasible shows profitability, lower by about 1.5 1.2

Language: Английский

---