Indoor Air Monitoring of Ethanol and Benzene in a Pilot Winery Using Active Sampling

<p>Acute indoor concentrations of benzene and ethanol were evaluated in the California Polytechnic State University San Luis Obispo’s pilot winery workroom. Air samples were collected during four different wine-making activities: fermentation, fermentation with Brix content testing, post-alcoholic fermentation pressing, and storage/finishing. Average workroom benzene concentrations ranged from 0.05 to 0.12 mg/m³. Ethanol concentrations in the winery workroom varied with the activity, ranging from 0.9 to 12 mg/m³. Pressing and fermentation with Brix content testing both led to higher indoor ethanol concentrations than fermentation without Brix content testing and storage/finishing.</p> <p>Tracer gas decay air exchange tests were conducted to determine the air exchange rate of the winery workroom. A single-space mass-balance model was used to estimate the air exchange rate for the entire workroom. The calculated air exchange rates were correlated with wind speeds and wind direction to create a linear model estimating air exchange rates based on wind speed. These air exchange rates and the indoor concentrations of ethanol were used with the single-space mass-balance model to calculate an ethanol emission rate for each activity. Total estimated ethanol emissions for the four activities were 3.1 lbs. ethanol per 1000 gallons of wine produced.</p>

Name thesis:degree_name

MS in Civil and Environmental Engineering

Discipline thesis:degree_discipline

Civil and Environmental Engineering

Year dc:date.available

2019

Author dc:creator

• Kaneda, Andrew I

Contributors dc:contributor

• Tracy Thatcher

• volatile organic compound
• ethanol
• benzene
• tracer gas decay
• air exchange rate
• indoor air quality
• active sampling
• thermal desorption
• gas chromatography-mass spectrometry
• winery
• Environmental Engineering

Identifier

10.15368/theses.2019.17

OAI identifier oai:identifier

oai:digitalcommons.calpoly.edu:theses-3388