Removing nitric oxide from flue gas using iron(II) citrate chelate absorption with microbial regeneration
The addition of metal chelates such as Fe(II)EDTA or Fe(II)Cit to wet flue gas desulfurization systems has been shown to increase the amount of NO x absorption from gas streams containing SO 2. This paper attempts to demonstrate the advantage of not only using Fe(II)Cit chelate to absorb nitrogen ox...
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| Veröffentlicht in: | Chemosphere (Oxford) 2007-04, Vol.67 (8), p.1628-1636 |
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| creator | Xu, Xinhua Chang, Shih Ger |
| description | The addition of metal chelates such as Fe(II)EDTA or Fe(II)Cit to wet flue gas desulfurization systems has been shown to increase the amount of NO
x
absorption from gas streams containing SO
2. This paper attempts to demonstrate the advantage of not only using Fe(II)Cit chelate to absorb nitrogen oxides from flue gas but also the advantage gained from adding microorganisms to the system. Two distinct classes of microorganisms are needed: denitrifying and iron-reducing bacteria. The presence of oxygen in flue gas will affect the absorption efficiency of NO by Fe(II)Cit chelate. The oxidation of Fe(II) can be slowed with the help of bacteria in two ways: bacteria can serve to directly reduce Fe(III) to Fe(II) or they can serve to keep levels of dissolved oxygen in the solution low. As a result, after NO absorption, Fe(II)(Cit)NO will be reduced by denitrifying bacteria to Fe(II)Cit while Fe(III) is reduced by anaerobic bacteria back to Fe(II). Our experiments have shown that the implementation of our protocol allowed for an NO reduction rate constant increase from standard levels of 0.0222–0.100
mM
h
−1 with inlet NO changed from 250 to 1000
ppm. We have also found that total Fe concentration tends to decrease after prolonged periods of operation due to the loss of some Fe to the formation of Fe(OH)
3 that settles together with the sludge at the bottom of bioreactor tank. |
| doi_str_mv | 10.1016/j.chemosphere.2006.11.015 |
| format | Article |
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x
absorption from gas streams containing SO
2. This paper attempts to demonstrate the advantage of not only using Fe(II)Cit chelate to absorb nitrogen oxides from flue gas but also the advantage gained from adding microorganisms to the system. Two distinct classes of microorganisms are needed: denitrifying and iron-reducing bacteria. The presence of oxygen in flue gas will affect the absorption efficiency of NO by Fe(II)Cit chelate. The oxidation of Fe(II) can be slowed with the help of bacteria in two ways: bacteria can serve to directly reduce Fe(III) to Fe(II) or they can serve to keep levels of dissolved oxygen in the solution low. As a result, after NO absorption, Fe(II)(Cit)NO will be reduced by denitrifying bacteria to Fe(II)Cit while Fe(III) is reduced by anaerobic bacteria back to Fe(II). Our experiments have shown that the implementation of our protocol allowed for an NO reduction rate constant increase from standard levels of 0.0222–0.100
mM
h
−1 with inlet NO changed from 250 to 1000
ppm. We have also found that total Fe concentration tends to decrease after prolonged periods of operation due to the loss of some Fe to the formation of Fe(OH)
3 that settles together with the sludge at the bottom of bioreactor tank.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2006.11.015</identifier><identifier>PMID: 17204301</identifier><identifier>CODEN: CMSHAF</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Absorption ; Air Pollutants - isolation & purification ; Anilides ; Applied sciences ; Atmospheric pollution ; Azo Compounds ; Bacteria - drug effects ; Bacteria - metabolism ; Biodegradation, Environmental ; Biological and medical sciences ; Biological treatment of gaseous effluents ; Biotechnology ; Environment and pollution ; Exact sciences and technology ; Fe(II)Cit ; Ferrous Compounds - chemistry ; Fundamental and applied biological sciences. Psychology ; General processes of purification and dust removal ; Glucose - metabolism ; Industrial applications and implications. Economical aspects ; Iron Chelating Agents - chemistry ; Microbial regeneration ; Nitric oxide ; Nitric Oxide - isolation & purification ; Oxygen - pharmacology ; Pollution ; Prevention and purification methods ; Sewage - microbiology</subject><ispartof>Chemosphere (Oxford), 2007-04, Vol.67 (8), p.1628-1636</ispartof><rights>2006 Elsevier Ltd</rights><rights>2007 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c467t-1796b51d5f0d94b5b0b7824214b26e42e7f6d14d9bf0a72b86e3588ea73dc5373</citedby><cites>FETCH-LOGICAL-c467t-1796b51d5f0d94b5b0b7824214b26e42e7f6d14d9bf0a72b86e3588ea73dc5373</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.chemosphere.2006.11.015$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18622088$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17204301$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Xu, Xinhua</creatorcontrib><creatorcontrib>Chang, Shih Ger</creatorcontrib><title>Removing nitric oxide from flue gas using iron(II) citrate chelate absorption with microbial regeneration</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>The addition of metal chelates such as Fe(II)EDTA or Fe(II)Cit to wet flue gas desulfurization systems has been shown to increase the amount of NO
x
absorption from gas streams containing SO
2. This paper attempts to demonstrate the advantage of not only using Fe(II)Cit chelate to absorb nitrogen oxides from flue gas but also the advantage gained from adding microorganisms to the system. Two distinct classes of microorganisms are needed: denitrifying and iron-reducing bacteria. The presence of oxygen in flue gas will affect the absorption efficiency of NO by Fe(II)Cit chelate. The oxidation of Fe(II) can be slowed with the help of bacteria in two ways: bacteria can serve to directly reduce Fe(III) to Fe(II) or they can serve to keep levels of dissolved oxygen in the solution low. As a result, after NO absorption, Fe(II)(Cit)NO will be reduced by denitrifying bacteria to Fe(II)Cit while Fe(III) is reduced by anaerobic bacteria back to Fe(II). Our experiments have shown that the implementation of our protocol allowed for an NO reduction rate constant increase from standard levels of 0.0222–0.100
mM
h
−1 with inlet NO changed from 250 to 1000
ppm. We have also found that total Fe concentration tends to decrease after prolonged periods of operation due to the loss of some Fe to the formation of Fe(OH)
3 that settles together with the sludge at the bottom of bioreactor tank.</description><subject>Absorption</subject><subject>Air Pollutants - isolation & purification</subject><subject>Anilides</subject><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Azo Compounds</subject><subject>Bacteria - drug effects</subject><subject>Bacteria - metabolism</subject><subject>Biodegradation, Environmental</subject><subject>Biological and medical sciences</subject><subject>Biological treatment of gaseous effluents</subject><subject>Biotechnology</subject><subject>Environment and pollution</subject><subject>Exact sciences and technology</subject><subject>Fe(II)Cit</subject><subject>Ferrous Compounds - chemistry</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General processes of purification and dust removal</subject><subject>Glucose - metabolism</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>Iron Chelating Agents - chemistry</subject><subject>Microbial regeneration</subject><subject>Nitric oxide</subject><subject>Nitric Oxide - isolation & purification</subject><subject>Oxygen - pharmacology</subject><subject>Pollution</subject><subject>Prevention and purification methods</subject><subject>Sewage - microbiology</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqN0U1v1DAQBmALgei28BeQOYDKIWHsxI5zrFZ8rFQJCcHZsp3JrldJvNhJof--Xu1K5dae5uBnxmO_hLxnUDJg8vO-dDscQzrsMGLJAWTJWAlMvCArppq2YLxVL8kKoBaFFJW4IJcp7QFys2hfkwvWcKgrYCvif-ZBd37a0snP0Tsa_vkOaR_DSPthQbo1iS7pCHwM0_Vm84m6LM2MNC8xHKuxKcTD7MNE__p5R0fvYrDeDDTiFifMOJ-9Ia96MyR8e65X5PfXL7_W34vbH98265vbwtWymQvWtNIK1okeura2woJtFK85qy2XWHNsetmxumttD6bhVkmshFJomqpzomqqK_LxNPcQw58F06xHnxwOg5kwLElzEFxI4E9CVitQrBUZtieYn5VSxF4foh9NvNcM9DEQvdf_BaKPgWjGdA4k9747X7LYEbvHznMCGXw4A5OcGfpoJufTo1OSc1Aqu_XJYf67O49RJ-dxctj5iG7WXfDPWOcBanqwHA</recordid><startdate>20070401</startdate><enddate>20070401</enddate><creator>Xu, Xinhua</creator><creator>Chang, Shih Ger</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>7QH</scope><scope>7T7</scope><scope>7TV</scope><scope>7UA</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>20070401</creationdate><title>Removing nitric oxide from flue gas using iron(II) citrate chelate absorption with microbial regeneration</title><author>Xu, Xinhua ; Chang, Shih Ger</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c467t-1796b51d5f0d94b5b0b7824214b26e42e7f6d14d9bf0a72b86e3588ea73dc5373</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Absorption</topic><topic>Air Pollutants - isolation & purification</topic><topic>Anilides</topic><topic>Applied sciences</topic><topic>Atmospheric pollution</topic><topic>Azo Compounds</topic><topic>Bacteria - drug effects</topic><topic>Bacteria - metabolism</topic><topic>Biodegradation, Environmental</topic><topic>Biological and medical sciences</topic><topic>Biological treatment of gaseous effluents</topic><topic>Biotechnology</topic><topic>Environment and pollution</topic><topic>Exact sciences and technology</topic><topic>Fe(II)Cit</topic><topic>Ferrous Compounds - chemistry</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General processes of purification and dust removal</topic><topic>Glucose - metabolism</topic><topic>Industrial applications and implications. Economical aspects</topic><topic>Iron Chelating Agents - chemistry</topic><topic>Microbial regeneration</topic><topic>Nitric oxide</topic><topic>Nitric Oxide - isolation & purification</topic><topic>Oxygen - pharmacology</topic><topic>Pollution</topic><topic>Prevention and purification methods</topic><topic>Sewage - microbiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xu, Xinhua</creatorcontrib><creatorcontrib>Chang, Shih Ger</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>Aqualine</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xu, Xinhua</au><au>Chang, Shih Ger</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Removing nitric oxide from flue gas using iron(II) citrate chelate absorption with microbial regeneration</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2007-04-01</date><risdate>2007</risdate><volume>67</volume><issue>8</issue><spage>1628</spage><epage>1636</epage><pages>1628-1636</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><coden>CMSHAF</coden><abstract>The addition of metal chelates such as Fe(II)EDTA or Fe(II)Cit to wet flue gas desulfurization systems has been shown to increase the amount of NO
x
absorption from gas streams containing SO
2. This paper attempts to demonstrate the advantage of not only using Fe(II)Cit chelate to absorb nitrogen oxides from flue gas but also the advantage gained from adding microorganisms to the system. Two distinct classes of microorganisms are needed: denitrifying and iron-reducing bacteria. The presence of oxygen in flue gas will affect the absorption efficiency of NO by Fe(II)Cit chelate. The oxidation of Fe(II) can be slowed with the help of bacteria in two ways: bacteria can serve to directly reduce Fe(III) to Fe(II) or they can serve to keep levels of dissolved oxygen in the solution low. As a result, after NO absorption, Fe(II)(Cit)NO will be reduced by denitrifying bacteria to Fe(II)Cit while Fe(III) is reduced by anaerobic bacteria back to Fe(II). Our experiments have shown that the implementation of our protocol allowed for an NO reduction rate constant increase from standard levels of 0.0222–0.100
mM
h
−1 with inlet NO changed from 250 to 1000
ppm. We have also found that total Fe concentration tends to decrease after prolonged periods of operation due to the loss of some Fe to the formation of Fe(OH)
3 that settles together with the sludge at the bottom of bioreactor tank.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>17204301</pmid><doi>10.1016/j.chemosphere.2006.11.015</doi><tpages>9</tpages></addata></record> |
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| ispartof | Chemosphere (Oxford), 2007-04, Vol.67 (8), p.1628-1636 |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Absorption Air Pollutants - isolation & purification Anilides Applied sciences Atmospheric pollution Azo Compounds Bacteria - drug effects Bacteria - metabolism Biodegradation, Environmental Biological and medical sciences Biological treatment of gaseous effluents Biotechnology Environment and pollution Exact sciences and technology Fe(II)Cit Ferrous Compounds - chemistry Fundamental and applied biological sciences. Psychology General processes of purification and dust removal Glucose - metabolism Industrial applications and implications. Economical aspects Iron Chelating Agents - chemistry Microbial regeneration Nitric oxide Nitric Oxide - isolation & purification Oxygen - pharmacology Pollution Prevention and purification methods Sewage - microbiology |
| title | Removing nitric oxide from flue gas using iron(II) citrate chelate absorption with microbial regeneration |
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