Hydrogenotrophic denitrification in a packed bed reactor: Effects of hydrogen-to-water flow rate ratio

Title
Hydrogenotrophic denitrification in a packed bed reactor: Effects of hydrogen-to-water flow rate ratio
Authors
J.W. LeeK.H. LeeK.Y. Park맹승규
Keywords
Hydrogenotrophic denitrification; Packed bed reactor (PBR); Hydrogen flow rate; Hydraulic retention time (HRT)
Issue Date
2010-06
Publisher
Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies
Citation
VOL 101, NO 11, 3940-3946
Abstract
Hydrogen dissolution and hydrogenotrophic denitrification performance were investigated in a lab-scale packed bed reactor (PBR) by varying the hydrogen flow rate and hydraulic retention time (HRT). The denitrification performance was enhanced by increasing the hydrogen flow rate and HRT as a result of high dissolved hydrogen concentration (0.39 mg/L) and utilization efficiencies (79%). In this study, the hydrogen- to-water flow rate ratio (Qg/Qw) was found to be a new operating factor representing the two parameters of hydrogen flow rate and HRT. Hydrogen dissolution and denitrification efficiency were nonlinearly and linearly correlated with the Qg/Qw, respectively. Based on its excellent linear correlation with denitrification efficiency, Qg/Qw should be greater than 2.3 to meet the WHO’s guideline of nitrate nitrogen for drinking water. This study demonstrates that Qg/Qw is a simple and robust factor to optimize hydrogensparged bioreactors for hydrogenotrophic denitrification.
URI
http://pubs.kist.re.kr/handle/201004/39092
ISSN
0960-8524
Appears in Collections:
KIST Publication > Article
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