« Previous AbstractA Capacitive Micromachined Ultrasonic Transducer-Based Resonant Sensor Array for Portable Volatile Organic Compound Detection with Wireless Systems    Next AbstractColorimetric sensors for volatile organic compounds (VOCs) based on conjugated polymer-embedded electrospun fibers »

J Biosci Bioeng

Title:		"Effects of gas flow rate, inlet concentration and temperature on biofiltration of volatile organic compounds in a peat-packed biofilter"
Author(s):		Yoon IK; Park CH;
Address:		"Industrial Liaison Research Institute, Kyung Hee University, Yongin-si 449-701, Korea"
Journal Title:		J Biosci Bioeng
Year:		2002
Volume:		93
Issue:		2
Page Number:		165 - 169
DOI:		10.1263/jbb.93.165
ISSN/ISBN:		1389-1723 (Print) 1347-4421 (Linking)
Abstract:		"The effects of incoming gas concentration, empty bed residence time (EBRT), and column temperature on the removal efficiency of volatile organic compounds (isoprene, dimethyl sulfide, chloroform, benzene, trichloroethylene, toluene, m-xylene, o-xylene and styrene) were studied for 101 d in a biofilter comprising two glass columns (I.D. 5.0 cm x height 62 cm) packed with peat. At an EBRT of 3 min the removal efficiency increased up to 90% 34 d after start up at both 25 degrees C and 45 degrees C when the incoming gas concentration was raised stepwise to 65 g.m(-3). When the incoming gas concentration increased to 83 g.m(-3), the removal efficiency was 93% at 25 degrees C, but dropped to 74% at 45 degrees C. At an incoming gas concentration of 92 g.m(-3) and an EBRT of 1.5 min, the removal efficiencies were 91% and 94% at 25 degrees C and 32 degrees C, respectively. However, at 1 min of EBRT, the removal efficiencies decreased to 68% and 81% at 25 degrees C and 32 degrees C, respectively. The removal rate per unit time and per unit volume of the biofilter was proportional to the incoming gas rate up to 3483 g VOC.m(-3).h(-1). Further increase of the incoming gas rate lowered the removal rate as compared to that predicted by the proportionality. The maximum removal rate was 3977 g.m(-3).h(-1) at 32 degrees C. At an EBRT of 1.5 min, the removal efficiency was highest for isoprene (93%), and lowest for chloroform (84%). Aromatic compounds (benzene, toluene, and xylene) were removed by 93-94%. The cell concentration increased 100-fold from the initial value, and reached 1.12 x 10(8) cells.(g of dry peat)(-1). At 32 degrees C, 67% of the incoming VOC was removed in the first quarter of the column"
Keywords:
Notes:		"PubMed-not-MEDLINEYoon, In-Kil Park, Chang-Ho eng Japan 2005/10/20 J Biosci Bioeng. 2002; 93(2):165-9. doi: 10.1263/jbb.93.165"