Contaminant Release from Storm Water Culvert Rehabilitation Technologies: Understanding Implications to the Environment and Long-Term Material Integrity

Whelton, Andrew J.; Ra, Kyungyeon; Sendesi, Seyedeh Mahboobeh Teimouri; Nuruddin, Md.; Li, Xianzhen; Howarter, John A.; Youngblood, Jeffrey P.; Jafvert, Chad T.; Zyaykina, Nadezhda N.

doi:10.5703/1288284317089

Cited by 6 publications

(4 citation statements)

References 19 publications

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“… If greater than 10 tons of HAP/year were emitted, a CIPP company would be classified as a major source according to the NESHAP . Numerous nonstyrene HAPs and other VOCs not listed on CIPP resin safety data sheets were found in the resins and emitted into air during manufacture. ,,− To compare HAP emission to NESHAP thresholds, time-resolved chemical emission data are needed.…”

Section: Introductionmentioning

confidence: 99%

Regulatory Significance of Plastic Manufacturing Air Pollution Discharged into Terrestrial Environments and Real-Time Sensing Challenges

Noh

Xia

Zyaykina

et al. 2023

Environ. Sci. Technol. Lett.

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Cured-in-place-pipe (CIPP) is an onsite plastic manufacturing technology used in the U.S. and has not been evaluated for regulatory compliance with federal air pollution laws. The practice involves the discharge of manufacturing waste into the environment. The study goal was to estimate the magnitude of volatile organic compounds (VOCs) discharged into the atmosphere for styrene and nonstyrene composite manufacture and examine low-cost air monitoring sensor reliability. Timeresolved emission analysis revealed that VOC emission was not only isolated to the thermal curing period but also occurred before and after curing. In addition to the styrene monomer, other gasphase hazardous air pollutants regulated under the Clean Air Act were also emitted. Based on typical CIPP installations, 0.9 to 16.6 U.S. tons of emitted VOCs were estimated for styrene CIPPs, and 0.09 to 1.6 U.S. tons of emitted VOCs were estimated for nonstyrene CIPPs. Because the number and size of CIPPs manufactured in a single community can vary, the total air pollution burden will significantly differ across communities. Low-cost VOC sensors commonly utilized near CIPP manufacturing activities did not accurately quantify styrene and should not be relied upon for that purpose. Up to several thousand-fold detection differences were observed. Regulatory evaluation of CIPP air pollution and PID sensor reliability assessments are recommended.

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Section: Introductionmentioning

confidence: 99%

Regulatory Significance of Plastic Manufacturing Air Pollution Discharged into Terrestrial Environments and Real-Time Sensing Challenges

Noh

Xia

Zyaykina

et al. 2023

Environ. Sci. Technol. Lett.

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“…Benzene, toluene, xylene, and ethylene are among the oil's harmful and poisonous compounds, according to the Agency for Toxic Substance and Disease Register ATSDR (Whelton et al, 2019). Exposure to benzene, the most toxic of the four, is the most dangerous.…”

Section: Introductionmentioning

confidence: 99%

Health Risk from Exposure to Benzene: Study in Oil Industry Workers

Bao¹

2022

JAMRMHSS

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The purpose of this study was to analyze the health risks of benzene exposure, on human health, especially for workers/employees engaged in the oil industry. To assess the health effects of benzene on workers, it was obtained from health data of workers exposed to benzene in the work environment. Acute exposure (14 days), moderate exposure (15-364 days) and chronic exposure (365 days) are workplaces where benzene exposure is below the Minimum Risk Level (MRL) value of inhaled benzene exposure that is reduced by ATSDR by acute, moderate and chronic exposure, respectively, to benzene. The threshold value of physical and chemical variables in the workplace (1.59 mg/m3) is also set by the Regulation. ATSDR-reduced exposure to toluene (7.6 mg/m3) is below the MRL for chronic inhalation exposure, while acute exposure (3.8 mg/m3) is well below the MRL for chronic inhalation exposure. Symptoms of headache, weariness, and respiratory irritation can be caused by Benzene exposure that exceeds the threshold value and biological exposure index. blood-forming cells and bone marrow dysfunction as well as neurological or reproductive system disorders. After conducting a risk analysis, an overall picture of the risks will be obtained. The results of risk analysis can be qualitative or quantitative depending on the technique or method used. Risk analysis will also provide an overview of the level of risk from various potential hazards that exist.

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“…There were fewer pores on the inside of the sample than on the outside [8] The pores enter the composite in various production steps: when mixing the resin, when saturating the liner. Air is released during the curing (polymerization) process of the resin [9].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Cured-in-Place Pipe Porosity Using CT and Microscopy

Majerová

Drochytka

2021

KEM

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It is assumed, that the pore content is related to other parameters of CIPP liners such as mechanical properties and service life or durability of pipelines. The article examines the pore structure of two different materials - composites pipes cured with steam and UV light. The pore structure was examined using an optical microscope and X-ray computed tomography (CT). The aim of the work was to verify the applicability of some methods for verifying the volume of air/gas in the cured composite.

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Contaminant Release from Storm Water Culvert Rehabilitation Technologies: Understanding Implications to the Environment and Long-Term Material Integrity

Cited by 6 publications

References 19 publications

Regulatory Significance of Plastic Manufacturing Air Pollution Discharged into Terrestrial Environments and Real-Time Sensing Challenges

Regulatory Significance of Plastic Manufacturing Air Pollution Discharged into Terrestrial Environments and Real-Time Sensing Challenges

Health Risk from Exposure to Benzene: Study in Oil Industry Workers

Evaluation of Cured-in-Place Pipe Porosity Using CT and Microscopy

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