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Development Of An Air Cleaner Based On Gas Absorption Membranes
Author(s) -
Wal Jan F.,
Klaassen Rob,
Moons André M.M.,
Walpot Jan I.
Publication year - 1993
Publication title -
indoor air
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.387
H-Index - 99
eISSN - 1600-0668
pISSN - 0905-6947
DOI - 10.1111/j.1600-0668.1993.00015.x
Subject(s) - filtration (mathematics) , pressure drop , membrane , formaldehyde , chemistry , drop (telecommunication) , absorption (acoustics) , atmospheric pressure , acetone , environmental engineering , tap water , materials science , chromatography , waste management , environmental science , composite material , engineering , mechanical engineering , organic chemistry , mechanics , biochemistry , statistics , physics , mathematics , oceanography , geology
The aim of the present study is to demonstrate the technical feasibility of the membrane absorber as an air cleaner with small‐scale modules. Six small‐scale membrane modules with different fibre lengths and fibre diameters have been investigated. Each module has been tested as a membrane absorber treating air with 4 different chemicals, formaldehyde, nitrogen dioxide, ammonia and acetone, with tap water. The pressure drop and the filtration efficiency has been measured at different flow rates. From these results the optimal membrane module has been selected for the following reasons: low pressure drop, small required membrane surface area and high filtration efficiency. The experiments were continued with the selected module for ETS in a test room. Water soluble compounds were removed with an efficiency of at least 95%. The efficiency was inconsistent for NO, (not expected) and low for hydrocarbons (as expected). The sensory filtration efficiency was also measured with two different methods, the threshold method and the decipol method. Both efficiencies were about 50%. Recommendations for future research are given.