Macrokinetic and quantitative microbial investigation on a bench‐scale biofilter treating styrene‐polluted gaseous streams
Identifieur interne : 001E67 ( Main/Exploration ); précédent : 001E66; suivant : 001E68Macrokinetic and quantitative microbial investigation on a bench‐scale biofilter treating styrene‐polluted gaseous streams
Auteurs : Mario Zilli ; Attilio Converti ; Renzo Di FeliceSource :
- Biotechnology and Bioengineering [ 0006-3592 ] ; 2003-07-05.
English descriptors
- KwdEn :
- Adsorption, Air Pollutants (chemistry), Air Pollutants (pharmacokinetics), Air Pollution (prevention & control), Bioreactors (microbiology), Feasibility Studies, Kinetics, Membranes, Artificial, Models, Biological, Pilot Projects, Rhodococcus (growth & development), Rhodococcus (metabolism), Rhodococcus rhodochrous, Soil Microbiology, Styrene (chemistry), Styrene (pharmacokinetics), Ultrafiltration (instrumentation), Ultrafiltration (methods), biofilter performance, macrokinetics, microbial concentration distribution, specific styrene removal rate, styrene.
- MESH :
- chemical , chemistry : Air Pollutants, Styrene.
- chemical , pharmacokinetics : Air Pollutants, Styrene.
- growth & development : Rhodococcus.
- instrumentation : Ultrafiltration.
- metabolism : Rhodococcus.
- methods : Ultrafiltration.
- microbiology : Bioreactors.
- prevention & control : Air Pollution.
- Adsorption, Feasibility Studies, Kinetics, Membranes, Artificial, Models, Biological, Pilot Projects, Soil Microbiology.
Abstract
We performed a macrokinetic and quantitative microbial investigation of a continuously operating bench‐scale biofilter treating styrene‐polluted gases. The device was filled with a mixture of peat and glass beads as packing medium and inoculated with the styrene‐oxidizing strain, Rhodococcus rhodochrous AL NCIMB 13259. The experimental data of styrene and microbial concentrations, obtained at different biofilter heights, were used to evaluate the pollutant concentration profiles as well as the influence of styrene loading on biomass distribution along the packing medium. Styrene and biomass concentration profiles permitted detection of a linear relationship between the amount of biomass grown in a given section of the biofilter and that of pollutant removed, regardless of the operating conditions tested. Biomass development in the bed appeared to: depend linearly on pollutant concentration at an inlet styrene concentration of <0.10 g m−3 in the gaseous stream; achieve a maximum value (7 · 107 colony forming units per gram of packing material) within a wide styrene concentration range (0.10 to 1.0 g m−3); and fall sharply beyond this inhibition threshold. The process followed zeroth‐order macrokinetics with respect to styrene concentration, which is consistent with zeroth‐order microkinetics with either fully active or not fully active biofilm. The maximal volumetric styrene removal rate was found to be 63 g mpacking material−3 h−1 for an influent pollutant concentration of 0.80 g m−3 and a superficial gas velocity of 245 m h−1. © 2003 Wiley Periodicals, Inc. Biotechnol Bioeng 83: 29–38, 2003.
Url:
DOI: 10.1002/bit.10640
Affiliations:
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Bioeng.</title><idno type="ISSN">0006-3592</idno><idno type="eISSN">1097-0290</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>New York</pubPlace><date type="published" when="2003-07-05">2003-07-05</date><biblScope unit="volume">83</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="29">29</biblScope><biblScope unit="page" to="38">38</biblScope></imprint><idno type="ISSN">0006-3592</idno></series><idno type="istex">9ADA43E6C159D7E06B62F2EA8D4F8CD75F7F3B4B</idno><idno type="DOI">10.1002/bit.10640</idno><idno type="ArticleID">BIT10640</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0006-3592</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption</term><term>Air Pollutants (chemistry)</term><term>Air Pollutants (pharmacokinetics)</term><term>Air Pollution (prevention & control)</term><term>Bioreactors (microbiology)</term><term>Feasibility Studies</term><term>Kinetics</term><term>Membranes, Artificial</term><term>Models, Biological</term><term>Pilot Projects</term><term>Rhodococcus (growth & development)</term><term>Rhodococcus (metabolism)</term><term>Rhodococcus rhodochrous</term><term>Soil Microbiology</term><term>Styrene (chemistry)</term><term>Styrene (pharmacokinetics)</term><term>Ultrafiltration (instrumentation)</term><term>Ultrafiltration (methods)</term><term>biofilter performance</term><term>macrokinetics</term><term>microbial concentration distribution</term><term>specific styrene removal rate</term><term>styrene</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Air Pollutants</term><term>Styrene</term></keywords><keywords scheme="MESH" type="chemical" qualifier="pharmacokinetics" xml:lang="en"><term>Air Pollutants</term><term>Styrene</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Rhodococcus</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Ultrafiltration</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Rhodococcus</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Ultrafiltration</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Bioreactors</term></keywords><keywords scheme="MESH" qualifier="prevention & control" xml:lang="en"><term>Air Pollution</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adsorption</term><term>Feasibility Studies</term><term>Kinetics</term><term>Membranes, Artificial</term><term>Models, Biological</term><term>Pilot Projects</term><term>Soil Microbiology</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We performed a macrokinetic and quantitative microbial investigation of a continuously operating bench‐scale biofilter treating styrene‐polluted gases. The device was filled with a mixture of peat and glass beads as packing medium and inoculated with the styrene‐oxidizing strain, Rhodococcus rhodochrous AL NCIMB 13259. The experimental data of styrene and microbial concentrations, obtained at different biofilter heights, were used to evaluate the pollutant concentration profiles as well as the influence of styrene loading on biomass distribution along the packing medium. Styrene and biomass concentration profiles permitted detection of a linear relationship between the amount of biomass grown in a given section of the biofilter and that of pollutant removed, regardless of the operating conditions tested. Biomass development in the bed appeared to: depend linearly on pollutant concentration at an inlet styrene concentration of <0.10 g m−3 in the gaseous stream; achieve a maximum value (7 · 107 colony forming units per gram of packing material) within a wide styrene concentration range (0.10 to 1.0 g m−3); and fall sharply beyond this inhibition threshold. The process followed zeroth‐order macrokinetics with respect to styrene concentration, which is consistent with zeroth‐order microkinetics with either fully active or not fully active biofilm. The maximal volumetric styrene removal rate was found to be 63 g mpacking material−3 h−1 for an influent pollutant concentration of 0.80 g m−3 and a superficial gas velocity of 245 m h−1. © 2003 Wiley Periodicals, Inc. Biotechnol Bioeng 83: 29–38, 2003.</div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Converti, Attilio" sort="Converti, Attilio" uniqKey="Converti A" first="Attilio" last="Converti">Attilio Converti</name><name sortKey="Di Felice, Renzo" sort="Di Felice, Renzo" uniqKey="Di Felice R" first="Renzo" last="Di Felice">Renzo Di Felice</name><name sortKey="Zilli, Mario" sort="Zilli, Mario" uniqKey="Zilli M" first="Mario" last="Zilli">Mario Zilli</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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