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닫힌계 챔버를 활용한 농업잔재물 연소성분별 배출계수 산정 - 유기성분 중심

Determination of Emission Factor for Chemical Compounds from Agricultural Crop Residues Burning using Closed Chamber System - Distributions of Organic Compounds

Abstract

This study aims to analyze the Emission Factor (EF) for chemical compounds from agricultural crop residues burning (i.e., rice straw, barley, watermelon stem, onion stem, weed, garlic stalk, persimmon, citrus eggplant, corn stalk, Sweet Potato Stem, and peanut stalk). A closed chamber system for agricultural crop residues burning was utilized under controlling the exact flow rate using mass flow controllers. Emission Factor for the detailed compounds such as PM2.5 mass, Organic Carbon (OC), Elemental Carbon (EC), Ionic Compounds (IC), Levoglucosan, etc, Poly Aromatic Hydrocarbons (PAHs), and Volatile Organic Compounds(VOCs) using gas chromatography - mass spectrometry were investigated for eleven agricultural crop residues. In the case of incineration of agricultural residues, the average PM2.5 emission factor was 16.8 g/kg with the highest in persimmon. The average emission factors of CO, SOx, and NOx were 180.9, 0.4, and 11.4 g/kg, respectively. Watermelon stem and onion stem showed a high NH3 emission factor due to the influence of fertilizer. The average emission factors for VOCs and PAHs were 0.36 and 0.06 g/kg, respectively. Benzene, toluene, ethylbenzene, m&p-xylene, o-xylene, acrylonitrile, and naphthalene accounted for about 80% in the VOCs. The results can be applied to database in Clean Air Policy Support System and will be able to calculate the emission rate for the air quality analyses.

Key words 

PAHs, VOCs, Levoglucosan, Source, Biomass, Combustion, Emission

▶출처 : 한국대기환경학회지 제 38권 제 3호, 2022.06, pp.470-483