Analysis of dioxin-like compounds formed in the combustion of tomato plant

Moltó, Julia; Font, Rafael; Gálvez, Araceli; Rey, María; Pequenín, Ana

doi:10.1016/j.chemosphere.2009.10.008

Cited by 11 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

“…Many different wastes have been studied in recent years, including biomass feedstock decomposition: pine needle and cone, as well as tomato plant decomposition were studied in detail in recent studies 25,26 . The average H/C ratio was calculated based on the data presented in these papers, and the results are shown in Fig.…”

Section: Comparison Of Different Waste Emissions Evolution Of H/c Ramentioning

confidence: 99%

See 1 more Smart Citation

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

Conesa

García

Palmer

2020

Sci Rep

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

Section: Methodsmentioning

confidence: 99%

Section: Comparison Of Different Waste Emissions Evolution Of H/c Ramentioning

confidence: 99%

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

Conesa

García

Palmer

2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Nevertheless, the share of dl-PCBs in the WHO 1998 -TEQ(PCDD/F/dl-PCB) emissions from waste incineration plants was found to be less than 3% [71], and less than 16% for different industrial sources [76]. For biomass combustion emissions, the share of dl-PCBs on WHO 2005 -TEQ(PCDD/F/dl-PCB) was found to vary from 0.7-22% [73], and 5.8-23% [74]. In municipal solid wastes incineration (MSWI) fly ashes, the contribution of dl-PCBs to WHO 2005 -TEQ(PCDD/F/dl-PCB) was less than 5% [77].…”

Section: Pcdd/fs and Teqs; Pahs And Bap Equivalentsmentioning

confidence: 97%

“…For wood boilers, the WHO 1998 -TEQ values were reported to be 10-25% higher than I-TEQ, depending on the congener distribution profile, which is within the measurement uncertainty [72]. From results of Moltó team, two correlations are extracted; Equation (3) [73] and Equation (4) [74].…”

Section: Pcdd/fs and Teqs; Pahs And Bap Equivalentsmentioning

confidence: 99%

Insights into PCDD/Fs and PAHs in Biomass Boilers Envisaging Risks of Ash Use as Fertilizers

Lopes

Proença

2020

Applied Sciences

View full text Add to dashboard Cite

Since ashes are a possible source of Persistent Organic Pollutants (POPs) contamination, their application in soils must be subject to more study and control. In this scope, feed residual forest biomasses and biomass ashes, collected along one year in four biomass power stations, were characterized mainly for their polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and Polycyclic Aromatic Hydrocarbons (PAHs) contents. The biomasses present concerning levels of Cl (0.04–0.28%) that may lead to PCDD/Fs formation. The biomasses also contain OCDD (29–260 ng/kg) and 1,2,3,4,6,7,8-HpCDD (35 ng/kg) that may contribute to increased Toxic Equivalents (TEQs) of ashes, possibly involving dichlorination and ash enrichment mechanisms. While the World Health Organization (WHO)2005-TEQs in bottom ashes (14–20 ng TEQ/kg) reaches the proposed limit (20 ng TEQ/kg) for ash use as fertilizers, in fly ashes (35–1139 ng TEQ/kg) the limit is exceeded. PAHs are below 0.02 mg/kg in bottom ashes and 1.5–2.5 mg/kg in fly ashes, complying with the proposed limit of 6 mg/kg. As bottom and fly ash streams may contain different ash flows, a clear definition of ash mixes is required. Correlations between unburned carbon (C), PAHs and PCDD/Fs were not found, which highlights the need for compulsory PCDD/Fs analysis in ashes, independently of their origin, burnout degree or levels of other contaminants. A sensitivity analysis was performed to evaluate the impact of handling non-detected values, which showed more impact for TEQs values close to the proposed regulatory limit of PCDD/Fs. These findings highlight the need to define reporting protocols of analytical results for risk assessments and conformity evaluation.

show abstract

“…By comparison, the emission factor for the combustion of plastic bag waste was determined to be 442 mg/kg [ 50 , 53 ]. The combustion of dried tomato plant material in a residential woodstove reportedly released 190 mg/kg of propylene [ 166 ]. The emission factor for the extrusion of low density polyethylene at a temperature of 600 °F was 0.38 mg/kg [ 167 ].…”

Section: Emission Sourcesmentioning

confidence: 99%

The Human Exposure Potential from Propylene Releases to the Environment

Morgott¹

2018

IJERPH

View full text Add to dashboard Cite

A detailed literature search was performed to assess the sources, magnitudes and extent of human inhalation exposure to propylene. Exposure evaluations were performed at both the community and occupational levels for those living or working in different environments. The results revealed a multitude of pyrogenic, biogenic and anthropogenic emission sources. Pyrogenic sources, including biomass burning and fossil fuel combustion, appear to be the primary contributors to atmospheric propylene. Despite a very short atmospheric lifetime, measurable levels could be detected in highly remote locations as a result of biogenic release. The indoor/outdoor ratio for propylene has been shown to range from about 2 to 3 in non-smoking homes, which indicates that residential sources may be the largest contributor to the overall exposure for those not occupationally exposed. In homes where smoking takes place, the levels may be up to thirty times higher than non-smoking residences. Atmospheric levels in most rural regions are typically below 2 ppbv, whereas the values in urban levels are much more variable ranging as high as 10 ppbv. Somewhat elevated propylene exposures may also occur in the workplace; especially for firefighters or refinery plant operators who may encounter levels up to about 10 ppmv.

show abstract

Analysis of dioxin-like compounds formed in the combustion of tomato plant

Cited by 11 publications

References 13 publications

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

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

Insights into PCDD/Fs and PAHs in Biomass Boilers Envisaging Risks of Ash Use as Fertilizers

The Human Exposure Potential from Propylene Releases to the Environment

Contact Info

Product

Resources

About