Pollutant emissions from the pyrolysis and combustion of viscoelastic memory foam

Garrido, María A.; Font, Rafael; Conesa, Juan A.

doi:10.1016/j.scitotenv.2016.10.159

Cited by 18 publications

(7 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The highest yields of ClBzs and ClPhs were observed in pyrolytic conditions; in such a way that the yields decreased with the presence of oxygen, consistent with the profile of PAHs. This tendency occurs also during the thermal decomposition of other wastes (Garrido et al, 2017;Rey et al, 2016). The maximum total yields are also similar lower than those detected with other wastes.…”

Section: Semivolatile Pahs and Halogenated Pollutantssupporting

confidence: 64%

Effect of marine ambient in the production of pollutants from the pyrolysis and combustion of a mixture of plastic materials

Íñiguez

Conesa

Soler

2018

Marine Pollution Bulletin

View full text Add to dashboard Cite

A mixture of polyethylene (PE), polyethylene-terephtalate (PET), polypropylene (PP) and Nylon was submerged in marine water during 12 moths. The chlorine content of these plastics was measured through the passing time. Thermobalance was used to look for differences in the thermal decomposition of the plastics during in that time interval. Degradation of PET, PP and Nylon produced changes in the weight loss curve, but behaviour of PE is confusing. Pyrolysis and combustion at 850 °C was finally performed to get knowledge of the possible differences in the emission of main gases, volatiles and semivolatiles including polycyclic aromatic hydrocarbons (PAHs), polychlorinated benzenes (ClBzs), polychlorinated phenols (ClPhs), polybrominated phenols (BrPhs), polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs). Results show that the emission of chlorinated species is somewhat not affected by the chlorine content of the plastics mix. The production of PCBs and PCDD/Fs was very low, under 4 pg WHO-TEQ/g.

show abstract

Section: Semivolatile Pahs and Halogenated Pollutantssupporting

confidence: 64%

Effect of marine ambient in the production of pollutants from the pyrolysis and combustion of a mixture of plastic materials

Íñiguez

Conesa

Soler

2018

Marine Pollution Bulletin

View full text Add to dashboard Cite

show abstract

“…A complete and interesting dataset was collected from these series of runs, that combined different wastes and conditions of thermal decomposition (temperature, residence time, oxygen presence). Specifically, data from the following previous studies were used in the present work (classified according to the waste used in the study): www.nature.com/scientificreports www.nature.com/scientificreports/ • Meat and bone meal (MBM) 5 • Poly vinyl chloride (PVC) 6 • Cotton and polyester fabrics 7,8 • Sewage sludges 9,10,19 • Electronic waste (including materials from mobile phones and electric wires) [11][12][13] • Polychloroprene (neoprene) 14 • Solid Recovered Fuel (SRF) 20 • Mattresses wastes (viscoelastic and polyurethane foams) 4,15 • Furniture wood waste 17 • Automotive Shredder Residue (ASR) 16 • Pine cones and needles 26 • Tomato plant 25 . Table 1 shows the calculations conducted during the decomposition modelling of one particular ASR waste.…”

Section: Methodsmentioning

confidence: 99%

“…In previous studies [5][6][7][8][9][10][11][12][13][14][15][16][17] , the evolution of the different pollutants emissions' was analysed as a function of the experimental conditions in the decomposition zone. In addition to the temperature and residence time of the gas in the hot zone, the presence of oxygen was controlled by using a constant air flow and by modulating the rate of introduction of the waste inside the furnace.…”

Section: Experimental Datamentioning

confidence: 99%

Estimation of Industrial Emissions during Pyrolysis and Combustion of Different Wastes Using Laboratory Data

Conesa

García

Palmer

2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

In our lab, we have been studying the emissions of different pollutants during pyrolysis and combustion of wastes under different conditions for the last three decades. These studies have focused on the effect of temperature and presence of oxygen on the production of different pollutants. Waste decomposition has been studied in a horizontal laboratory scale reactor, but no estimate has been made of the actual emissions in a conventional thermal decomposition system. In the present study, emissions during these wastes’ thermal decomposition were estimated using Aspen HYSYS. In the simulation software, the waste composition (elemental analysis) was given as an input parameter, as well as the gas flow rate used as atmosphere during the decomposition. The emitted hydrocarbons measured in the laboratory were equated to the emission of a single compound (propylene). The simulation permitted calculating the percentage of oxygen in the emitted gas, and the pollutant emissions were then recalculated under standard conditions. The emission of dioxins and furans were estimated under different conditions of decomposition, and an adequate approximation of the waste decomposition in actual incineration systems could be obtained.

show abstract

“…Unfortunately, it is a quite tedious process. In higher temperatures there are fewer polychlorodibenzeno- p -dioxins and furans, but instead, the load of N-containing compounds such as NO and HCN reaches higher levels [ 44 ]. Even with those obstacles, the serious argument for the increase in the percentage of polyurethane waste administered to thermal degradation instead of landfilling is the amount of produced energy.…”

Section: Polyurethane Waste Managementmentioning

confidence: 99%

Polyurethane Recycling and Disposal: Methods and Prospects

2020

View full text Add to dashboard Cite

Growing water and land pollution, the possibility of exhaustion of raw materials and resistance of plastics to physical and chemical factors results in increasing importance of synthetic polymers waste recycling, recovery and environmentally friendly ways of disposal. Polyurethanes (PU) are a family of versatile synthetic polymers with highly diverse applications. They are class of polymers derived from the condensation of polyisocyanates and polyalcohols. This paper reports the latest developments in the field of polyurethane disposal, recycling and recovery. Various methods tested and applied in recent years have proven that the processing of PU waste can be economically and ecologically beneficial. At the moment mechanical recycling and glycolysis are the most important ones. Polyurethanes’ biological degradation is highly promising for both post-consumer and postproduction waste. It can also be applied in bioremediation of water and soil contaminated with polyurethanes. Another possibility for biological methods is the synthesis of PU materials sensitive to biological degradation. In conclusion, a high diversity of polyurethane waste types and derivation results in demand for a wide range of methods of processing. Furthermore, already existing ones appear to be enough to state that the elimination of not reprocessed polyurethane waste in the future is possible.

show abstract

Pollutant emissions from the pyrolysis and combustion of viscoelastic memory foam

Cited by 18 publications

References 64 publications

Effect of marine ambient in the production of pollutants from the pyrolysis and combustion of a mixture of plastic materials

Effect of marine ambient in the production of pollutants from the pyrolysis and combustion of a mixture of plastic materials

Estimation of Industrial Emissions during Pyrolysis and Combustion of Different Wastes Using Laboratory Data

Polyurethane Recycling and Disposal: Methods and Prospects

Contact Info

Product

Resources

About