Machine learning utilization on air gasification of polyethylene terephthalate waste

Waste Management Bulletin, Journal Year: 2023, Volume and Issue: 2(1), P. 75 - 82

Published: Dec. 30, 2023

Studies in the field of machine learning utilization on air gasification polyethylene terephthalate (PET) waste are utmost importance and can contribute to solving environmental challenges associated with PET while also promoting development advanced technologies management renewable energy. The primary objective this study is focus process through algorithms. aim assess how well these algorithms predict evaluate performance waste. To achieve this, a model for created, developed evaluated based their performance. results suggest that H2/CO has high accuracy, as indicated by its R-sq value 91.86%. It important highlight models lower heating values cold gas efficiency show excellent 99.84%. predicted (higher than 90% higher 99% efficiency) indicate excel predicting future observations great accuracy.

Language: Английский

---

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

---

Catalytic Consequences of Hierarchical Pore Architectures within MFI and FAU Zeolites for Polyethylene Conversion

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(10), P. 7536 - 7552

Published: April 30, 2024

The benefits of hierarchical zeolites for the conversion bulky molecules like polymeric waste have been reported in literature; however, impact mesopore sizes and connectivities on rates, product selectivities, catalyst deactivation context plastic upcycling has not systematically probed. Here, we synthesized a suite MFI FAU via desilication under varying conditions metal-free polyethylene reactions batch flow (473–523 K). Polyethylene (solid) rates (normalized by Bro̷nsted acid site density) were higher than parent microporous regardless connectivities, i.e., open or constricted, suggesting that incorporation mesopores facilitates diffusion intermediate products to access medium-pore protons successive scission events. Furthermore, branched:linear gaseous ratios produced MFI, since allow egress bulkier without undergoing further secondary events, e.g., isomerization back linear alkanes/alkenes beta scission. Solid with cetyltrimethylammonium bromide (CTABr), FAU, likely because presence CTABr recrystallization leached species form composites (hierarchical ordered mesoporous materials) more isolated mesopores. stagnation despite increased volumes (>0.22 cm3 g–1), highlights importance confinement effects provided micropores cleaving C–C bonds at modest reaction conditions. In situ 1H MAS NMR performed zeolite show PE isomerizes (and potentially deconstructs) temperatures near 450 K, highlighting role sites activating mild Catalyst recyclability studies showed all catalysts undergo during reactions, but extents. Overall, materials better stability materials, although differences between are smaller those MFI. Taken together, these findings demonstrate how from can be controlled fine-tuning identity connectivity

Language: Английский

---

Microplastics as hazardous pollutants: Occurrence, effects, removal and mitigation by using plastic waste as adsorbents and supports for photocatalysts

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(6), P. 111107 - 111107

Published: Sept. 27, 2023

Language: Английский

---

Production of carbon nanotubes via catalytic pyrolysis of waste plastics over Ni/Al2O3 catalyst: The influence of plastic types

Journal of Analytical and Applied Pyrolysis, Journal Year: 2023, Volume and Issue: 177, P. 106318 - 106318

Published: Dec. 21, 2023

Language: Английский

---

Exploring the hidden environmental pollution of microplastics derived from bioplastics: A review

Chemosphere, Journal Year: 2024, Volume and Issue: 355, P. 141773 - 141773

Published: March 26, 2024

Language: Английский

---

Laboratory-scale plastic upcycling and green growth: Evaluating the upcycling of plastic waste into carbon nanotubes from economic and environmental aspects

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 495, P. 153300 - 153300

Published: June 28, 2024

Language: Английский

---

An Overview of Waste-to-Energy Incineration Integrated with Carbon Capture Utilization or Storage Retrofit Application

Sustainability, Journal Year: 2024, Volume and Issue: 16(10), P. 4117 - 4117

Published: May 14, 2024

This paper provides an overview of the integration Carbon Capture, Utilization, or Storage (CCUS) technologies with Waste-to-Energy (WtE) incineration plants in retrofit applications. It explains operational principles WtE incineration, including generation both biogenic and fossil CO2 emissions potential for CCUS to mitigate these emissions. In addition, covers regulatory framework influencing adoption such highlights recent Directive 2023/959 inclusion incinerators European Union Emissions Trading System (EU ETS) by 2028. measure could provide a significant impulse plants. Moreover, it discusses use captured, which be used Capture (CCS) Utilization (CCU), offers comparison projects that have already been implemented worldwide, focus on Netherlands Italy. illustrates Netherlands’ advantageous position due its developed market early adoption, compared Italy’s emerging initial storage solutions.

Language: Английский

---

Thermochemical Valorization of Waste Plastic for Production of Synthetic Fuels, Fine Chemicals, and Carbon Nanotubes

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 1769 - 1796

Published: Jan. 23, 2024

Globally, approximately 300 million metric tonnes of plastic waste are generated annually, and over 90% them either disposed to the landfill or incinerated. Though there commitments reduce plastics, it has its limitations. In this review, various types thermochemical processes (pyrolysis, gasification, hydrothermal liquefaction) used for upcycling first introduced. The production synthetic fuel, fine chemicals, carbon nanotubes through these then discussed, with effects each factor scrutinized. Technical challenges using how can be overcome highlighted. Economical environmental assessment also analyzed determine whether such viable plastic, closing economy loop.

Language: Английский

---

Synergistic effect of CaO/HZSM-5 composite catalyst in regulating co-pyrolysis products of rice straw and PVC

Journal of Fuel Chemistry and Technology, Journal Year: 2025, Volume and Issue: 53(1), P. 82 - 94

Published: Jan. 1, 2025

Language: Английский

---