A5000961028- Microplastics and Plastic Pollution
- Recycling and Waste Management Techniques
- biodegradable polymer synthesis and properties
- Carbon Dioxide Capture Technologies
- Effects and risks of endocrine disrupting chemicals
- Toxic Organic Pollutants Impact
- Membrane Separation and Gas Transport
- Carbon dioxide utilization in catalysis
- Antimicrobial agents and applications
- Energy, Environment, and Transportation Policies
- Advanced oxidation water treatment
- Electrochemical sensors and biosensors
- Blockchain Technology Applications and Security
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Fiber-reinforced polymer composites
- Epoxy Resin Curing Processes
- Mechanical Behavior of Composites
- Polymer crystallization and properties
University of Bologna
2019-2025
Mixtures of plastic particles different types were analysed by Py-GC-MS in order to investigate the effect polymer interactions on composition pyrolysates. Pyrolysis products associated secondary reactions observed when poly(ethylene terephthalate) (PET) pyrolysed presence poly(vinylchloride) (PVC) and polyamides PA6 (polycaproamide) PA66 (poly(hexamethylene adipamide)). Co-pyrolysis PET PVC produced mono dichloroethyl esters terephthalic acid due addition HCl double bond vinyl group. Benzyl...
Polyurethanes (PUR) are a group of polymers synthesized from different diisocyanate and polyol monomers resulting in countless number possible structures. However, the large market demand, variety application fields justify inclusion PUR microplastic (MP) investigation. This study aimed at providing comprehensive information on within MP analysis by pyrolysis-gas chromatography-mass spectrometry to clarify whether (i) it is make reliable statement content environmental samples based few...
PBAT (poly(butylene adipate-co-terephthalate) is an important player in the field of bioplastics for its biodegradability performance and good mechanical properties. Awareness forecasted increased use has prompted researchers to develop methods analysis a variety samples. Py-GC-MS, conventional or with derivatising agents, technique excellence polymers that relies on detailed structural knowledge evolved products. This study presents comprehensive investigation chemical composition...
Poly(ethylene imine) is a family of polymers with high content amine groups employed in various applications and widely investigated as CO2 adsorbents carbon capture sequestration. In this study, five branched polyethylenimines (PEIs) different molecular weights were analysed by Py-GC-MS to gather information on the chemical structure principal thermal degradation products. All PEIs produced pyrolysates similar composition characterised occurrence ethylenediamine, diethylenetriamine,...
In this study, we investigate the current accuracy of widely used microplastic (MP) detection methods through an interlaboratory comparison (ILC) involving ISO-approved techniques. The ILC was organized under prestandardization platform VAMAS (Versailles Project on Advanced Materials and Standards) gathered a large number (84) analytical laboratories across globe. aim (i) to test compare two thermo-analytical three spectroscopical with respect their suitability identify quantify...
Microplastics (MPs) are widespread contaminants highly persistent in the environment and present matrices to which humans extensively exposed, including food beverages. MP ingestion occurs adults children is becoming an emerging public health issue. The gastrointestinal system most exposed contamination, can alter its physiology starting from changes microbiome. This study investigates by omic approach impact of a single intake mixture polyethylene (PE) polystyrene (PS) MPs on ecology...
The environmental impact of Bitcoin mining has raised severe concerns considering the expected growth 30% by 2030. This study aimed to develop a Life Cycle Assessment model determine carbon dioxide equivalent emissions associated with mining, material requirements and energy demand. By applying assessment method IPCC 2021 GWP (100 years), GHG electricity consumption were estimated at 51.7 Mt CO2 eq/year in 2022 calculated modelling real national mixes referring geographical area where takes...
Several on-line chemical reactions have been combined with Py-GC-MS to improve the chromatographic behaviour of polar pyrolysis products. Derivatisations, principally methylation and silylation, widely employed analysis oxygenated products, while conversion nitrogen-containing compounds resulted more challenging. The present study shows that amines can be efficiently converted into corresponding N-substituted amides (acetamides) by conducting in presence acetic anhydride (PyAc). PyAc was...
ABSTRACTFormation of oxygen in the caffeine aqueous solutions occurs through self-decomposition reactions hydrogen peroxide, used as an oxidant photo-Fenton treatment. The total concentration peroxide treatment would be contribution stoichiometric that reacts with organic matter ([H2O2]0 = 2.0 mM) and excess decomposes to oxygen, radical mechanisms, according a ratio 0.8164 mmol H2O2 mg−1 O2. When operating at concentrations lower than [H2O2]0 mM, is not released because there no oxidant....
The search for alternative ways to give a second life materials paved the way detailed investigation into three silica-polyethylenimine (Si-PEI) purpose of CO2 adsorption in carbon capture and storage. A solvent extraction procedure was investigated recover degraded PEIs silica, concomitantly, pyrolysis evaluated obtain valuable chemicals such as alkylated pyrazines. An array thermal (TGA, Py-GC-MS), mechanical (rheology), spectroscopical (ATR-FTIR, 1H-13C-NMR) methods were applied extracted...
Solid sorbents based on silica and polyethyleneimine (PEI) are intensively investigated in the field of carbon capture storage (CCS). Pyrolysis was proposed as a thermal process to recover pure from exhausted convert PEI into potentially useful products, such alkylated pyrazines. A GC-MS method internal standardisation with 2-methoxypyrazine developed evaluated determine concentration six pyrazines pyrolysis oils silica-PEI sorbent pyrolysed at 400, 500, 600 650°C. The most abundant were...