Design and testing of filter packs for acid concentration measurement in the atmosphere

Name: Pojanie Khummongkol

Organization : King Mongkut's University of Technology Thonburi. School of Energy and Materials

Name: Suthipong Sthiannopkao

Organization : King Mongkut's University of Technology Thonburi. School of Energy and Materials

Name: Nattasut Mantananont

Organization : King Mongkut's University of Technology Thonburi. School of Energy and Materials

keyword: Gases

; Aerosols

; Filters and filtration

Abstract: A four-stage filter packs was designed for measuring aerosols and gases. The material used was superlene plastic, an inexpensive material with a good property for collecting acidic samples. The filter packs was 17.1 and 7.1 cm in height and width, respectively, and was designed for the airflow upstream. Since the main objective was to test the performance and efficiency of a designed four-stage filter packs, it was necessary to compare its measured accuracy with a high-resolution automatic real time analyzer (U.V. Fluorescence SO2 Analyzer). The inlet air flow rates through the filter packs were set at 0.5, 1.0, 1.5, and 2.0 L/min and the sampling periods were set at 3, 5, and 10 days. The results show that the 4-stage filter-packs operating at the inlet air-flow rate of 0.5 L/min and at the sampling period of 5 days represented closely to the automatic analyzer reading by 98%. Based on the suitable operating condition determined from the experiments, acidic aerosols were then collected and analyzed in order to investigate the amount of acid deposition in the urban area. The results reveal that sulfate concentration was high in the area of study (66.5 nmol/m3), followed by nitrate, nitric acid and chloride concentrations (46.7, 36.3 and 23.1 nmol/m3, respectively). In terms of gases, the concentrations of NH3, SO2, and HCl were found to be 736, 139, and 61.6 nmol/m3, respectively

King Mongkut's University of Technology Thonburi. KMUTT Library

Address: BANGKOK

Email: info.lib@mail.kmutt.ac.th

Created: 2003

Modified: 2017-03-22

Issued: 2017-03-22

บทความ/Article

application/pdf

BibliograpyCitation : Proceedigns of the 2nd Regional Conference on Energy Technology Towards a Clean Environment, Phuket, Thailand 12-14 February 2003 p. 585-592

CallNumber: 12005824

eng

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