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학술저널
저자정보
저널정보
한국환경분석학회 환경분석과 독성보건 한국환경분석학회지 제21권 제3호
발행연도
2018.1
수록면
191 - 197 (7page)

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The presence of trace amounts of siloxanes in landfill gas (LFG) may lead to mechanical malfunction and deteriorate the gasification efficiency. Hence, it is imperative to develop an accurate and reliable method to measure the siloxane concentrate in an LFG. In this study, two test methods were used in order to determine optimum sampling conditions for effective measurement of siloxane concentrations in emitted landfill gases. The experiment was carried out using the solvent absorption method and the solid adsorption method. D4 and D5 siloxane molecules, which account for 90% of the total concentration in the material, were analyzed by each method using different solvents and flow rates at different temperatures. When acetone was used, the recovery rates of D4 for the solvent absorption and the solid adsorption method were increased to 7.1% and 8.6%, respectively, as compared with using methanol. The recovery rates of D5 for both methods increased to 19.6% and 26.6% as well. It was found that using acetone has a much higher recovery rate than using methanol as a solvent in both methods. Besides, the method in which the absorption solvent is cooled to a low temperature using dry ice showed the highest recovery rate. Also, the solid adsorption method can measure siloxanes concentration faster than solvent absorption method by improving the adsorption tubes, reducing sampling time and resolving equipment complexity.

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