Chemical Engineering and Processing - Process Intensification, Journal Year: 2022, Volume and Issue: 177, P. 108989 - 108989
Published: May 26, 2022
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155227 - 155227
Published: Aug. 30, 2024
Language: Английский
Citations
20
Polymers, Journal Year: 2024, Volume and Issue: 16(1), P. 142 - 142
Published: Jan. 2, 2024
This work addresses a novel bio-solvolysis process for the treatment of complex poly(ethylene terephthalate) (PET) waste using biobased monoethylene glycol (BioMEG) as depolymerization agent in order to achieve more sustainable chemical recycling process. Five difficult-to-recycle PET streams, including multilayer trays, coloured bottles and postconsumer textiles, were selected study. After characterization conditioning samples, an evaluation proposed was carried out by monitoring reaction over time determine degree conversion (91.3–97.1%) bis(2-hydroxyethyl) terephthalate (BHET) monomer yield (71.5–76.3%). A purification process, activated carbon (AC), also developed remove colour reduce metal content solid. By applying this strategy, whiteness (L*) BHET greatly increased from around 60 95 (L* = 100 pure white) Zn significantly reduced 200 2 mg/kg. The structure purified monomers analyzed via infrared spectroscopy (FTIR) differential scanning calorimetry (DSC), composition samples measured proton nuclear magnetic resonance (1H-NMR), proving high purity with up 99.5% mol.
Language: Английский
Citations
17
Macromolecular Rapid Communications, Journal Year: 2022, Volume and Issue: 43(13)
Published: May 30, 2022
Today, plastics are ubiquitous in everyday life, problem solvers of modern technologies, and crucial for sustainable development. Yet the surge global demand growing world population has triggered a tidal wave plastic debris environment. Moving from linear to zero-waste carbon-neutral circular economy is vital future planet. Taming waste flood requires closing carbon loop through reuse, mechanical molecular recycling, capture, use greenhouse gas dioxide. In quest eco-friendly products, do not need be reinvented but tuned reuse recycling. Their full potential must exploited regarding energy, resource, eco-efficiency, prevention, economy, climate change mitigation, lowering environmental pollution. Biodegradation holds promise composting bio-feedstock recovery, it neither Holy Grail nor panacea littering. As an alternative downcycling, recycling enables both closed-loop recovery virgin open-loop valorization, producing hydrogen, fuels, refinery feeds, lubricants, chemicals, carbonaceous materials. Closing does create Perpetuum Mobile renewable energy achieve sustainability.
Language: Английский
Citations
65
Energies, Journal Year: 2022, Volume and Issue: 15(6), P. 2114 - 2114
Published: March 14, 2022
The civilization development requires improvement of technologies and satisfaction people’s needs on the one side, but other it is directly connected with increasing production waste. In this paper, authors dealt second these aspects, reviewing recycling plastic waste, which can be processed without changing its chemical structure (mechanical recycling), (chemical recycling, thermal recycling). Mechanical involves shredding waste in order to obtain recyclate or regranulate that meets specific quality requirements. Chemical consists degradation material into low-molecular compounds, take place processes hydrolysis, glycolysis, methanolysis by means solvents, during hydrocracking, gasification, pyrolysis, combustion, enabling recovery gaseous liquid hydrocarbons foundings application as a fuel energy cement-lime industry contained plastics. paper focuses methods plastics become more important due legal regulations limiting landfilling also took up properties their European conditions.
Language: Английский
Citations
59
Chemical Engineering and Processing - Process Intensification, Journal Year: 2022, Volume and Issue: 177, P. 108989 - 108989
Published: May 26, 2022
Language: Английский
Citations
56