PVC Dechlorination for Facilitating Plastic Chemical Recycling: A Systematic Literature Review of Technical Advances, Modeling and Assessment DOI Open Access
Yuan Tian,

Mengqi Han,

Dungang Gu

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(19), P. 8331 - 8331

Published: Sept. 25, 2024

Polyvinyl chloride (PVC) resins are widely used in modern society due to their acid and alkali resistance, low cost, strong insulation properties. However, the high chlorine (Cl) content PVC poses significant challenges for its recycling. This study reviews treatment processes, model construction, economic environmental assessments construct a methodological framework sustainable development of emerging dechlorination technologies. In terms this summarizes three types pretreatment, simultaneous during chemical recycling, product purification, emphasizes necessity from systematic perspective. Additionally, construction models processes is investigated laboratory industrial production system macro-scale material, order evaluate potential inventory data material metabolism behaviors. review also summarized methodology Techno-Economic Analysis (TEA) Life Cycle Assessment (LCA), which can be applied evaluation performance processes. Overall, provides readers with comprehensive perspective on state-of-the-art technologies, meanwhile offering guidance future research applications recycling waste.

Language: Английский

Recent Trends of Recycling and Upcycling of Polymers and Composites: A Comprehensive Review DOI Creative Commons
Christina V. Podara, Stefania Termine,

Maria Modestou

et al.

Recycling, Journal Year: 2024, Volume and Issue: 9(3), P. 37 - 37

Published: May 6, 2024

This review article gathers the most recent recycling technologies for thermoset and thermoplastic polymers. Results about existing experimental procedures their effectiveness are presented. For polymers, focuses mainly on fibre-reinforced polymer composites, with an emphasis epoxy-based systems carbon/glass fibres as reinforcement, due to environmental concerns of end-of-life management. Thermal processes (fluidised bed, pyrolysis) chemical (different types solvolysis) discussed. The combined (microwave, steam, ultrasonic assisted techniques) extraordinary attempts (electrochemical, biological, ionic liquids) analysed. Mechanical that leads downgrading materials is excluded. Insights also given upcycling methodologies have been implemented until now reuse fibres. As state-of-the-art approach common matrices presented, together appropriate additivation matrix upcycling. Mechanical, chemical, enzymatic described, among others. use composites quite new, thus, achievements With all above information, this extensive can serve a guide educational purposes, targeting students technicians in polymers recycling.

Language: Английский

Citations

15
Kinetics and debromination studies on the pyrolysis of waste printed circuit boards with the addition of copper and copper oxides DOI
Tao Chen, Chuan Ma, Ben Wang

et al.

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 443, P. 141141 - 141141

Published: Feb. 6, 2024

Language: Английский

Citations

10
Recovery of chemicals and energy through thermo-chemical processing of plastic waste DOI
Taewoo Lee,

Dohee Kwon,

Sangyoon Lee

et al.

Progress in Energy and Combustion Science, Journal Year: 2025, Volume and Issue: 108, P. 101219 - 101219

Published: Jan. 16, 2025

Language: Английский

Citations

1
Current progresses in the analysis, treatment and resource utilization of industrial waste salt in China: A comprehensive review DOI
Ling Feng,

Binghui Tian,

Ming Zhu

et al.

Resources Conservation and Recycling, Journal Year: 2025, Volume and Issue: 217, P. 108224 - 108224

Published: Feb. 28, 2025

Language: Английский

Citations

1
Physicochemical reactions in e-waste recycling DOI

Bo Niu,

E Shanshan,

Qingming Song

et al.

Nature Reviews Chemistry, Journal Year: 2024, Volume and Issue: 8(8), P. 569 - 586

Published: June 11, 2024

Language: Английский

Citations

7
Synergistic flame retardancy of poly(cyclotriphosphazene-co-piperazine) particle with aluminum diethylphosphinate in epoxy resin DOI
Song Wang, Lingchen Meng, Ailing Zhang

et al.

Journal of Macromolecular Science Part A, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 11

Published: Nov. 22, 2024

Hexachlorocyclotriphosphazene (HCCP) was reacted with piperazine to obtain poly(cyclotriphosphazene-co-piperazine) particle (PCPS), which used as the flame retardant for epoxy resin (EP). The structure of PCPS determined by various methods. When alone and addition amount in prepared flame-retardant EP (FR-EP) reached 4%, obtained FR-EP cannot even pass V-1 level Vertical burning (UL-94) test. However, showed a synergistic retardancy aluminum diethylphosphinate (ADP). mixture ADP 4% weight ratio 3:1, FR-EP, EP-ADP/PCPS3:1, V-0 UL-94 limiting oxygen index (LOI) value EP-ADP/PCPS3:1 29.7%. Compared pure EP, peak heat release rate micro-combustion calorimetry (MCC) test reduced 20.6%. Thermogravimetric analysis (TGA) result that, PCPS, char residual increased about 5.1% compared EP. combination significant advantage promoting mechanical properties hardly decreased PCPS.

Language: Английский

Citations

6
Investigating the degradation and products of thermo-oxidation of polyimide-based engineering plastics DOI Creative Commons
Chuan Ma, Shogo Kumagai,

Masumi Sato

et al.

Journal of Analytical and Applied Pyrolysis, Journal Year: 2024, Volume and Issue: 181, P. 106575 - 106575

Published: June 5, 2024

With the ever-growing concern regarding plastic waste and its impact on environment, understanding degradation pathways of polyimide (PI)-based plastics becomes increasingly crucial for developing sustainable management strategies. This study investigated thermo-oxidative PI-based plastics, including PI, polyamide-imide (PAI), polyetherimide (PEI). We used techniques thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy, an in situ heated electron spin resonance spectrometer, a customized pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) system. The TGA results revealed that onset temperature exceeded 460 °C. PI was promoted under air, while PAI delayed. For PEI, air coincided with initial decomposition N2, followed by oxidation residual solid. Changes chemical structures were during characterization samples treated above 400 char, obtained high yield, notably contained N-rich functional groups. Real-time using Py-GC/MS pyrolysis produced gases such as NH3, HCN, H2O, CO, CO2, NH3 HCN being converted into NOx atmosphere air. generated N-containing compounds, aromatic amines, nitriles, phthalimides. In contrast, PEI various phenolic compounds owing to presence ether newly formed p-benzoquinone, identified provides comprehensive insights unique thermal oxidative stabilities holds potential recovering high-value materials from plastics.

Language: Английский

Citations

4
Elemental mercury removal by copper-containing brominated pyrolytic chars derived from waste printed circuit boards DOI

Gan Wan,

Tao Chen, Linlin Xu

et al.

Fuel, Journal Year: 2024, Volume and Issue: 372, P. 132212 - 132212

Published: June 14, 2024

Language: Английский

Citations

4
Release and transformation of chlorine during the pyrolysis of KCl- and MgCl2-loaded woods DOI
Bo Wang, Jingchun Huang, Yu Qiao

et al.

Fuel, Journal Year: 2025, Volume and Issue: 388, P. 134494 - 134494

Published: Jan. 27, 2025

Language: Английский

Citations

0
Addressing Plastic Waste Challenges in Africa: The Potential of Pyrolysis for Waste-to-Energy Conversion DOI Creative Commons
Milon Selvam Dennison, S. Paramasivam, Titus Wanazusi

et al.

Clean Technologies, Journal Year: 2025, Volume and Issue: 7(1), P. 20 - 20

Published: March 5, 2025

Plastic waste poses a significant challenge in Africa and around the world, with its volume continuing to increase at an alarming rate. In Africa, estimated 25–33% of daily is made up plastic, posing threat environment, marine life, human health. One potential solution this problem waste-to-energy recycling, such as pyrolysis, which involves conversion materials into oil, char, non-condensable gasses through thermochemical process absence oxygen. Given abundance continent’s energy challenges, pyrolysis offers sustainable solution. This review delves concept products, thermodynamics, endothermic kinetics, presenting it promising way address plastic Africa. Despite African Union’s goal recycle waste, continent faces barriers achieving target, including infrastructural, economic, social difficulties. It crucial implement strategies for managing mitigate environmental degradation promote cleaner healthier living environment. Pyrolysis technology highlighted viable management, can convert valuable byproducts syngas. Case studies from countries like South Nigeria demonstrate scaling management issues while generating job opportunities. underscores need investment, regulatory support, public awareness overcome challenges unlock full Embracing method could lead economic benefits continent.

Language: Английский

Citations

0