Modeling of Polycyclic Aromatic Hydrocarbons stack emissions from a hot mix asphalt plant for gate-to-gate Life Cycle Inventory

Ventura, Anne; Lorino, Tristan; Guen, Laurédan Le

doi:10.1016/j.jclepro.2015.01.021

Cited by 15 publications

(3 citation statements)

References 22 publications

(27 reference statements)

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“…In fact, Nap has been reported to be the most abundant gas-phase PAH in different asphalt fumes. 3,43,44 The concentration of three-ring PAHs (Ace, Acy, and Flu) were very similar in AC-02, AC-03, and AC-04 but differed significantly in AC-01, which had the highest concentrations. The exception was Phe, which was detected only in samples AC-03 and AC-04.…”

Section: Resultsmentioning

confidence: 98%

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Emission and Collection of Polycyclic Aromatic Hydrocarbons From Raw Asphalt Samples Heated at 130 °C

et al. 2020

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The emission and collection of polycyclic aromatic hydrocarbons (PAHs) in the aqueous solution and asphalt samples obtained from different refineries in Brazil were evaluated. The aqueous solution and asphalt samples were heated under an argon atmosphere at 50 and 130 °C, respectively, for 60 min in a closed system. The targeted PAHs for the aqueous solution were acenaphthene, anthracene, and fluoranthene, while those for the asphalt samples were naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, fluoranthene, pyrene, and benzo[a]anthracene. These were all taken from the US EPA list. The performances of Amberlite XAD-2, high-density polyethylene (HDPE), silica (Si), polyurethane foam (PUF), and granular activated carbon (GAC) in collecting the PAHs from the vapor phase by gas−solid adsorption were compared. High-performance liquid chromatography with a diode array detector was used to quantify the mixtures of PAHs retained by the adsorbents. PUF and XAD-2 had the highest PAH retention capacity. For the aqueous solution, PUF showed adsorption yields of 100% for all the investigated PAHs. XAD-2 was also a good adsorbent (adsorption yields >90%), followed by HDPE (75−90% adsorption yields). For silica and GAC, the adsorption yields depended strongly on the PAHs. Alternatively, for the asphalt samples, the adsorption yield decreased dramatically for all the evaluated PAHs, showing that the asphalt matrix had a strong influence on the adsorption capacity of the adsorbents. In this case, the total PAH retention was 47.2% for PUF, 46.8% for XAD-2, 29.9% for GAC, 27.3% for Si, and 19.8% for HDPE. The retention/elution processes on the adsorbent surfaces were also evaluated by atomic force microscopy.

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Section: Resultsmentioning

confidence: 98%

“…These two PAHs appear to be less dependent on the origin of the asphalt compared to the other compounds. In fact, Nap has been reported to be the most abundant gas-phase PAH in different asphalt fumes. ,, …”

Section: Results and Discussionmentioning

confidence: 99%

Emission and Collection of Polycyclic Aromatic Hydrocarbons From Raw Asphalt Samples Heated at 130 °C

et al. 2020

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“…Emissions related to HMA production and processing are temperature-dependent and depend on a dynamic equilibrium of gases, vapours, aerosols, combustion products (CO, CO 2 , NO x and SO x ), organic compounds of various species, including volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons (PAHs), hydrogen sulphide (H 2 S) and others [ 10 ]. Among these, VOCs and NO x contribute to the formation of a series of secondary compounds, such as peroxyacetyl nitrate, aldehydes, acids and tropospheric ozone, that may be noxious to plants [ 11 ] or have adverse short- and long-term health effects [ 11 , 12 ]. H 2 S is a colourless, flammable compound associated with a rotten egg smell, with a very low perception threshold (<1 ppm).…”

Section: Introductionmentioning

confidence: 99%

Odours in Asphalt: Analysis of the Release of H2S from Bitumen by a Mass Spectrometric Residual Gas Analyser

Monteleone,

Di Luca,

Filomia

et al. 2024

MPs

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During the production and laying phases of hot-mixing asphalt (HMA), various volatile organic compounds (VOCs) and noxious gases such as H2S are released into the atmosphere. These emissions are a serious environmental problem, a risk to human health, and expose workers and residents to unfriendly odours. The aim of this study was the development of a fast and sensitive analytical method to detect the H2S emitted from hot bituminous binder that is generally used in the various stages of asphalt production, processing, handling and during road construction. The method consisted in the analysis of evolved H2S from a flask with molten bitumen, using nitrogen as a carrier gas to lead the volatile compounds into a residual gas analyser equipped with a quadrupole mass spectrometer. The analysis was performed following the H2S-specific signals at m/z 33 (HS+) and at m/z 34 (H2S+) in real time, directly on the sample without laborious and expensive pre-treatments and with short response times (<6 s). Calibration with a standard mixture of 1000 ppm of H2S in nitrogen allows semi-quantitative H2S detection. The sensitivity and rapidity of the method were evaluated by quenching the release of sulphur compounds with commercial odour-suppressing agents. Upon addition of 0.1% of additive in two minutes, the H2S signal drops about 80% in two minutes, confirming the good response of the method, even with a very complex matrix.

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Life cycle analysis of perfluorooctanoic acid (PFOA) and its salts in China

Meng

Lü

Wang

et al. 2017

Environ Sci Pollut Res

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China has been the largest producer and emitter of perfluorooctanoic acid and its salts (PFOA/PFO). However, the flows of PFOA/PFO from manufacture and application to the environment are indistinct, especially flows from waste treatment sites to the environment. Here, a life cycle analysis of PFOA/PFO is conducted in which all major flows of PFOA/PFO have been characterized for 2012. Processes related to uses and possible releases of PFOA/PFO include manufacture and use, waste management, and environmental storage. During manufacture and use, emission from application was the most important (117.0 t), regardless of whether it flowed first to waste treatment facilities or was directly released to the environment, followed by manufacture of PFOA/PFO (3.9 t), while flows from the service life and end of life of consumer products were the lowest (1.2 t). Among five waste treatment routes, flows through wastewater treatment plants (WWTPs) were the highest (10.6 t), which resulted in 12.8 t of PFOA/PFO being emitted into the environment. Masses of PFOA/PFO emission were estimated to be 96.3 t to the hydrosphere, 25.6 t to the atmosphere, and 3.2 t to soils. Therefore, control over reduction of PFOA/PFO should focus on application of reliable alternatives and emission reduction from WWTPs using effective treatment techniques.

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Modeling of Polycyclic Aromatic Hydrocarbons stack emissions from a hot mix asphalt plant for gate-to-gate Life Cycle Inventory

Cited by 15 publications

References 22 publications

Emission and Collection of Polycyclic Aromatic Hydrocarbons From Raw Asphalt Samples Heated at 130 °C

Emission and Collection of Polycyclic Aromatic Hydrocarbons From Raw Asphalt Samples Heated at 130 °C

Odours in Asphalt: Analysis of the Release of H2S from Bitumen by a Mass Spectrometric Residual Gas Analyser

Life cycle analysis of perfluorooctanoic acid (PFOA) and its salts in China

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