Bitumen Emissions on Workplaces in Germany

Rühl, Reinhold; Musanke, Uwe; Kolmsee, K.; Prieß, Renate; Breuer, D.

doi:10.1080/15459620701335019

Cited by 22 publications

(10 citation statements)

References 5 publications

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“…Some evidence for asphalt-related emissions during hot application exists from Occupational Safety and Health Administration (OSHA)focused occupational exposure studies; however, no studies have quantified emission rates or complete source profiles (9)(10)(11)(12)(13)(14)(15). Area source asphalt-related emissions are essentially absent in emission inventories, with the exception of VOC solvent evaporation from cutback asphalt application, a rare (~1%) method compared to hot-mix asphalt that uses no solvents (1).…”

Section: Introductionmentioning

confidence: 99%

Asphalt-related emissions are a major missing nontraditional source of secondary organic aerosol precursors

et al. 2020

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Asphalt-based materials are abundant and a major nontraditional source of reactive organic compounds in urban areas, but their emissions are essentially absent from inventories. At typical temperature and solar conditions simulating different life cycle stages (i.e., storage, paving, and use), common road and roofing asphalts produced complex mixtures of organic compounds, including hazardous pollutants. Chemically speciated emission factors using high-resolution mass spectrometry reveal considerable oxygen and reduced sulfur content and the predominance of aromatic (~30%) and intermediate/semivolatile organic compounds (~85%), which together produce high overall secondary organic aerosol (SOA) yields. Emissions rose markedly with moderate solar exposure (e.g., 300% for road asphalt) with greater SOA yields and sustained SOA production. On urban scales, annual estimates of asphalt-related SOA precursor emissions exceed those from motor vehicles and substantially increase existing estimates from noncombustion sources. Yet, their emissions and impacts will be concentrated during the hottest, sunniest periods with greater photochemical activity and SOA production.

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Section: Introductionmentioning

confidence: 99%

Asphalt-related emissions are a major missing nontraditional source of secondary organic aerosol precursors

et al. 2020

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“…In a German study, (15) exposure levels were approximately 2.5 and 1.5 mg/m 3 , respectively, for two studied populations of paver drivers/screedmen and roller drivers. The present results follow the same trends (1.8 and 0.5 mg/m 3 ).…”

Section: Sampling Time (Min) Mineral Fraction (Mg/m 3 ) Benzene-solubmentioning

confidence: 97%

Field Sampling Investigations Within the Road Paving Industry

Deygout¹,

Coutaller²

2009

Journal of Occupational and Environmental Hygiene

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This article reinforces data on exposure levels that workers experience within the European road paving industry (mineral and organic aerosols, organic vapors). By means of paired field surveys, this article focuses on comparative experiments dedicated to a personal sampler commonly used in this industry-the 37-mm cassette. This filter holder is compared with a sampler specifically designed by the Institute of Occupational Medicine (IOM) for the inhalable fraction of airborne matter. The results reinforce previously published comparative data demonstrating that the total 37-mm cassette and the inhalable IOM sampler give similar results, with no statistical difference, for the collection of field organic aerosols emitted from hot bitumen fumes. Exposure levels are compared with some previous studies, and an estimate of the polycyclic aromatic hydrocarbon content in particulates is given for common paving operations.

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“…Bitumen sheets are flexible layers, typically 4-8 mm thick, composed of bitumen mixed with different polymers and reinforcing materials, and their use for roof sealing, in modern buildings is very popular. For example, in Germany, the manufacturing of bitumen products for roofing membranes and waterproofing sheets represents the second-largest application for bitumen, following road construction [38]. Many bitumen products may emit polycyclic aromatic hydrocarbons that have mutagenic and carcinogenic properties [29,37,38].…”

Section: Bitumen Sheets and Water Qualitymentioning

confidence: 99%

Dynamic Release of Solutes from Roof Bitumen Sheets Used for Rainwater Harvesting

Nachshon

Ben‐Hur

Kurtzman

et al. 2021

Water

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Bitumen waterproof sheets are widely used to seal building roofs. Previous works have focused on the mechanical-physical properties of bitumen sheets, as well as their aging and degradation processes, and their impact on sealing properties of the buildings. Due to a growing need over recent years to use rooftops in urban environments for rainwater harvesting purposes, it is highly important to better characterize the quality of the harvested water from the bitumen covered roofs, and to shed more light on the impact of bitumen degradation processes on the release of various components to the harvested roof water. In the present study, the extracted organic and inorganic solutes from bitumen-covered roofs by water flow on the bitumen sheets were examined through a series of experiments, including measurements from the roofs of buildings in the center of Israel during the winter of 2019–2020. The results indicated high levels of organic and inorganic solute loads in the roof water during the first flush of the first rain of the winter, with maximal electric conductivity readings at the order of 4 dS/m. However, it was shown that following the first flush, a ~20 mm of cumulative rainfall was sufficient to wash off all the summers’ accumulated solutes from the roof. After this solute flushing of the roof, harvested rainwater along the winter was of good quality, with electric conductivity readings in the range of 0.04–0.85 dS/m. Moreover, it was shown that bitumen sheets which were exposed to direct sun radiation emitted greater loads of solutes, likely a result of elevated aging and degradation processes. The findings of the present research point to the need to find efficient ways to isolate roof bitumen sheets from direct sun radiation and to design rainwater harvesting systems that will not collect the water drained from the first flush.

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Bitumen Emissions on Workplaces in Germany

Cited by 22 publications

References 5 publications

Asphalt-related emissions are a major missing nontraditional source of secondary organic aerosol precursors

Asphalt-related emissions are a major missing nontraditional source of secondary organic aerosol precursors

Field Sampling Investigations Within the Road Paving Industry

Dynamic Release of Solutes from Roof Bitumen Sheets Used for Rainwater Harvesting

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