Gas dispersion and immobile gas volume in solid and porous particle biofilter materials at low air flow velocities

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Fältnamn	Indikatorer	Metadata
000		03080naa a2200313 4500
001		oai:DiVA.org:uu-163148
003		SwePub
008		111208s2010 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1631482 URI
024	7	a https://doi.org/10.3155/1047-3289.60.7.8302 DOI
040		a (SwePub)uu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Sharma, Prabhakar,d 1976-u Uppsala universitet,Luft-, vatten- och landskapslära,Geohydrology4 aut0 (Swepub:uu)prash531
245	1 0	a Gas dispersion and immobile gas volume in solid and porous particle biofilter materials at low air flow velocities
264		c 2012-01-24
264	1	b Informa UK Limited,c 2010
338		a print2 rdacarrier
520		a Gas-phase dispersion in granular biofilter materials with awide range of particle sizes was investigated using atmosphericair and nitrogen as tracer gases. Two types ofmaterials were used: (1) light extended clay aggregates(LECA), consisting of highly porous particles, and (2)gravel, consisting of solid particles. LECA is a commercialmaterial that is used for insulation, as a soil conditioner,and as a carrier material in biofilters for air cleaning. Thesetwo materials were selected to have approximately thesame particle shape. Column gas transport experimentswere conducted for both materials using different meanparticle diameters, different particle size ranges, and differentgas flow velocities. Measured breakthrough curveswere modeled using the advection-dispersion equationmodified for mass transfer between mobile and immobilegas phases. The results showed that gas dispersivity increasedwith increasing mean particle diameter for LECAbut was independent of mean particle diameter for gravel.Gas dispersivity also increased with increasing particlesize range for both media. Dispersivities in LECA weregenerally higher than for gravel. The mobile gas contentin both materials increased with increasing gas flow velocitybut it did not show any strong dependency onmean particle diameter or particle size range. The relativefraction of mobile gas compared with total porosity washighest for gravel and lowest for LECA likely because of itshigh internal porosity.
650	7	a TEKNIK OCH TEKNOLOGIERx Naturresursteknikx Annan naturresursteknik0 (SwePub)207992 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Environmental Engineeringx Other Environmental Engineering0 (SwePub)207992 hsv//eng
700	1	a Poulsen, Tjalfeu Aalborg University,Section for Environmental Engineering4 aut
710	2	a Uppsala universitetb Luft-, vatten- och landskapslära4 org
773	0	t Journal of the air & waste management associationd : Informa UK Limitedg 60:7, s. 830-837q 60:7<830-837x 1047-3289x 1096-2247x 2162-2906
856	4	u https://www.tandfonline.com/doi/pdf/10.3155/1047-3289.60.7.830?needAccess=true
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-163148
856	4 8	u https://doi.org/10.3155/1047-3289.60.7.830

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