Reduction of Dioxin-like Compound Emissions from a Waelz Plant with Adsorbent Injection and a Dual Baghouse Filter System
Previous study indicates that the polychlorinated dibenzo-p-dioxin and -dibenzofurans (PCDD/F) concentration measured in the stack gas of the Waelz plant investigated reached 194 ng-TEQ/(N m3) (TEQ = toxic equivalence), due to the relatively high potential of PCDD/F formation and a low PCDD/F remova...
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| Veröffentlicht in: | Environmental science & technology 2008-03, Vol.42 (6), p.2111-2117 |
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| creator | Chi, Kai Hsien Chang, Shu Hao Chang, Moo Been |
| description | Previous study indicates that the polychlorinated dibenzo-p-dioxin and -dibenzofurans (PCDD/F) concentration measured in the stack gas of the Waelz plant investigated reached 194 ng-TEQ/(N m3) (TEQ = toxic equivalence), due to the relatively high potential of PCDD/F formation and a low PCDD/F removal efficiency (99.8%) achieved at a lower adsorbent injection rate (16 kg/h) of the adsorbent injection + DBF system also significantly reduced the total PCDD/-F and PCB emission flows (per kg of electric arc furnace dust treated) to 1925 ng-I-TEQ and 30.5 ng-TEQWHO, respectively. |
| doi_str_mv | 10.1021/es702396y |
| format | Article |
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In September 2006, the Taiwan government set the PCDD/F emission limit for existing Waelz plants as 1.0 ng-I-TEQ/(N m3). The retrofit technology for reducing PCDD/F emissions from the existing Waelz plant was evaluated at the same time. Carbon-type adsorbent injection technology was adopted in early 2006 to reduce the emission of dioxin-like compounds at the Waelz plant investigated. Flue gases and ambient air samplings were conducted during the two stages of retrofit to evaluate the removal efficiency of dioxin-like compounds at the Waelz plant investigated. At stage 1, by applying adsorbent injection + single baghouse filter (SBF), the PCDD/F and polychlorinated biphenyl (PCB) concentrations measured in the stack gas at the Waelz plant were 4.62 ng-TEQ/(N m3) and 0.08 ng-TEQWHO/(N m3) (TEQWHO = World Health Organization TEQ), respectively, as the adsorbent injection rate was controlled at 40 kg/h (or 540 mg/(N m3)). At stage 2, the PCDD/F and PCB concentration measured at stack gas, achieved with adsorbent injection + dual baghouse filter (DBF) system, were further reduced to 0.235 ± 0.04 ng-I-TEQ/(N m3) (I-TEQ = International TEQ) and 0.004 ± 0.002 ng-TEQWHO/(N m3) with the adsorbent injection rate at 16 kg/h (or 215 mg/(N m3)). In the meantime, the atmospheric PCDD/F concentrations measured in the vicinity area of the Waelz plant were greatly reduced from 568−1465 to 48.9−130 fg-I-TEQ/m3. Higher removal efficiency (>99.8%) achieved at a lower adsorbent injection rate (16 kg/h) of the adsorbent injection + DBF system also significantly reduced the total PCDD/-F and PCB emission flows (per kg of electric arc furnace dust treated) to 1925 ng-I-TEQ and 30.5 ng-TEQWHO, respectively.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es702396y</identifier><identifier>PMID: 18409645</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Adsorbents ; Adsorption ; Air Pollutants - chemistry ; Air Pollution - prevention & control ; Applied sciences ; Benzofurans - chemistry ; Coke ; Dibenzofurans, Polychlorinated ; Dioxins ; Efficiency ; Emissions control ; Exact sciences and technology ; Filters ; Filtration ; Gases ; Industrial plants ; Industrial Waste ; Injections ; PCB ; Pollution ; Polychlorinated biphenyls ; Polychlorinated Biphenyls - chemistry ; Polychlorinated Dibenzodioxins - analogs & derivatives ; Polychlorinated Dibenzodioxins - chemistry ; Remediation and Control Technologies ; Waste Management - methods</subject><ispartof>Environmental science & technology, 2008-03, Vol.42 (6), p.2111-2117</ispartof><rights>Copyright © 2008 American Chemical Society</rights><rights>2008 INIST-CNRS</rights><rights>Copyright American Chemical Society Mar 15, 2008</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a439t-b420dce18192b82f0cd422889531eacee79db94d43aa8a35d42e877315d9f6143</citedby><cites>FETCH-LOGICAL-a439t-b420dce18192b82f0cd422889531eacee79db94d43aa8a35d42e877315d9f6143</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es702396y$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es702396y$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20188558$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18409645$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chi, Kai Hsien</creatorcontrib><creatorcontrib>Chang, Shu Hao</creatorcontrib><creatorcontrib>Chang, Moo Been</creatorcontrib><title>Reduction of Dioxin-like Compound Emissions from a Waelz Plant with Adsorbent Injection and a Dual Baghouse Filter System</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Previous study indicates that the polychlorinated dibenzo-p-dioxin and -dibenzofurans (PCDD/F) concentration measured in the stack gas of the Waelz plant investigated reached 194 ng-TEQ/(N m3) (TEQ = toxic equivalence), due to the relatively high potential of PCDD/F formation and a low PCDD/F removal efficiency (<70%) achieved with the baghouse filter (BF). In September 2006, the Taiwan government set the PCDD/F emission limit for existing Waelz plants as 1.0 ng-I-TEQ/(N m3). The retrofit technology for reducing PCDD/F emissions from the existing Waelz plant was evaluated at the same time. Carbon-type adsorbent injection technology was adopted in early 2006 to reduce the emission of dioxin-like compounds at the Waelz plant investigated. Flue gases and ambient air samplings were conducted during the two stages of retrofit to evaluate the removal efficiency of dioxin-like compounds at the Waelz plant investigated. At stage 1, by applying adsorbent injection + single baghouse filter (SBF), the PCDD/F and polychlorinated biphenyl (PCB) concentrations measured in the stack gas at the Waelz plant were 4.62 ng-TEQ/(N m3) and 0.08 ng-TEQWHO/(N m3) (TEQWHO = World Health Organization TEQ), respectively, as the adsorbent injection rate was controlled at 40 kg/h (or 540 mg/(N m3)). At stage 2, the PCDD/F and PCB concentration measured at stack gas, achieved with adsorbent injection + dual baghouse filter (DBF) system, were further reduced to 0.235 ± 0.04 ng-I-TEQ/(N m3) (I-TEQ = International TEQ) and 0.004 ± 0.002 ng-TEQWHO/(N m3) with the adsorbent injection rate at 16 kg/h (or 215 mg/(N m3)). In the meantime, the atmospheric PCDD/F concentrations measured in the vicinity area of the Waelz plant were greatly reduced from 568−1465 to 48.9−130 fg-I-TEQ/m3. Higher removal efficiency (>99.8%) achieved at a lower adsorbent injection rate (16 kg/h) of the adsorbent injection + DBF system also significantly reduced the total PCDD/-F and PCB emission flows (per kg of electric arc furnace dust treated) to 1925 ng-I-TEQ and 30.5 ng-TEQWHO, respectively.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Air Pollutants - chemistry</subject><subject>Air Pollution - prevention & control</subject><subject>Applied sciences</subject><subject>Benzofurans - chemistry</subject><subject>Coke</subject><subject>Dibenzofurans, Polychlorinated</subject><subject>Dioxins</subject><subject>Efficiency</subject><subject>Emissions control</subject><subject>Exact sciences and technology</subject><subject>Filters</subject><subject>Filtration</subject><subject>Gases</subject><subject>Industrial plants</subject><subject>Industrial Waste</subject><subject>Injections</subject><subject>PCB</subject><subject>Pollution</subject><subject>Polychlorinated biphenyls</subject><subject>Polychlorinated Biphenyls - chemistry</subject><subject>Polychlorinated Dibenzodioxins - analogs & derivatives</subject><subject>Polychlorinated Dibenzodioxins - chemistry</subject><subject>Remediation and Control Technologies</subject><subject>Waste Management - methods</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNplkVtv1DAQhS1ERbeFB_4AspBA4iHF18R-LLtdepOo2KLyZjnJhHqbxIudqF1-Pa52tSvB02g03xydOYPQW0pOKGH0M8SCMK7z9Qs0oZKRTCpJX6IJIZRnmuc_D9FRjEtCEkXUK3RIlSA6F3KC1t-hHqvB-R77Bs-cf3J91roHwFPfrfzY1_isczEmIOIm-A5bfGeh_YNvWtsP-NEN9_i0jj6UkNqLfgkbNZs2LZ6NtsVf7K97P0bAc9cOEPBiHQfoXqODxrYR3mzrMfoxP7udnmfX375eTE-vMyu4HrJSMFJXQBXVrFSsIVUtGFNKS07BVgCFrkstasGtVZbLNAVVFJzKWjc5FfwYfdzoroL_PUIcTLqngjbZh-TKUK0KLahK4Pt_wKUfQ5-8mRQbFYpxmaBPG6gKPsYAjVkF19mwNpSY52eY3TMS-24rOJYd1Htym34CPmwBGyvbNsH2lYs7jhGqlJTPzrIN51JwT7u5DQ8mL3ghze3NwlwW88Udv5qZy72ureL-iP8N_gXn1KyC</recordid><startdate>20080315</startdate><enddate>20080315</enddate><creator>Chi, Kai Hsien</creator><creator>Chang, Shu Hao</creator><creator>Chang, Moo Been</creator><general>American Chemical Society</general><scope>BSCLL</scope><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>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7TV</scope></search><sort><creationdate>20080315</creationdate><title>Reduction of Dioxin-like Compound Emissions from a Waelz Plant with Adsorbent Injection and a Dual Baghouse Filter System</title><author>Chi, Kai Hsien ; Chang, Shu Hao ; Chang, Moo Been</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a439t-b420dce18192b82f0cd422889531eacee79db94d43aa8a35d42e877315d9f6143</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adsorbents</topic><topic>Adsorption</topic><topic>Air Pollutants - chemistry</topic><topic>Air Pollution - prevention & control</topic><topic>Applied sciences</topic><topic>Benzofurans - chemistry</topic><topic>Coke</topic><topic>Dibenzofurans, Polychlorinated</topic><topic>Dioxins</topic><topic>Efficiency</topic><topic>Emissions control</topic><topic>Exact sciences and technology</topic><topic>Filters</topic><topic>Filtration</topic><topic>Gases</topic><topic>Industrial plants</topic><topic>Industrial Waste</topic><topic>Injections</topic><topic>PCB</topic><topic>Pollution</topic><topic>Polychlorinated biphenyls</topic><topic>Polychlorinated Biphenyls - chemistry</topic><topic>Polychlorinated Dibenzodioxins - analogs & derivatives</topic><topic>Polychlorinated Dibenzodioxins - chemistry</topic><topic>Remediation and Control Technologies</topic><topic>Waste Management - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chi, Kai Hsien</creatorcontrib><creatorcontrib>Chang, Shu Hao</creatorcontrib><creatorcontrib>Chang, Moo Been</creatorcontrib><collection>Istex</collection><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>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>Pollution Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chi, Kai Hsien</au><au>Chang, Shu Hao</au><au>Chang, Moo Been</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reduction of Dioxin-like Compound Emissions from a Waelz Plant with Adsorbent Injection and a Dual Baghouse Filter System</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2008-03-15</date><risdate>2008</risdate><volume>42</volume><issue>6</issue><spage>2111</spage><epage>2117</epage><pages>2111-2117</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Previous study indicates that the polychlorinated dibenzo-p-dioxin and -dibenzofurans (PCDD/F) concentration measured in the stack gas of the Waelz plant investigated reached 194 ng-TEQ/(N m3) (TEQ = toxic equivalence), due to the relatively high potential of PCDD/F formation and a low PCDD/F removal efficiency (<70%) achieved with the baghouse filter (BF). In September 2006, the Taiwan government set the PCDD/F emission limit for existing Waelz plants as 1.0 ng-I-TEQ/(N m3). The retrofit technology for reducing PCDD/F emissions from the existing Waelz plant was evaluated at the same time. Carbon-type adsorbent injection technology was adopted in early 2006 to reduce the emission of dioxin-like compounds at the Waelz plant investigated. Flue gases and ambient air samplings were conducted during the two stages of retrofit to evaluate the removal efficiency of dioxin-like compounds at the Waelz plant investigated. At stage 1, by applying adsorbent injection + single baghouse filter (SBF), the PCDD/F and polychlorinated biphenyl (PCB) concentrations measured in the stack gas at the Waelz plant were 4.62 ng-TEQ/(N m3) and 0.08 ng-TEQWHO/(N m3) (TEQWHO = World Health Organization TEQ), respectively, as the adsorbent injection rate was controlled at 40 kg/h (or 540 mg/(N m3)). At stage 2, the PCDD/F and PCB concentration measured at stack gas, achieved with adsorbent injection + dual baghouse filter (DBF) system, were further reduced to 0.235 ± 0.04 ng-I-TEQ/(N m3) (I-TEQ = International TEQ) and 0.004 ± 0.002 ng-TEQWHO/(N m3) with the adsorbent injection rate at 16 kg/h (or 215 mg/(N m3)). In the meantime, the atmospheric PCDD/F concentrations measured in the vicinity area of the Waelz plant were greatly reduced from 568−1465 to 48.9−130 fg-I-TEQ/m3. Higher removal efficiency (>99.8%) achieved at a lower adsorbent injection rate (16 kg/h) of the adsorbent injection + DBF system also significantly reduced the total PCDD/-F and PCB emission flows (per kg of electric arc furnace dust treated) to 1925 ng-I-TEQ and 30.5 ng-TEQWHO, respectively.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>18409645</pmid><doi>10.1021/es702396y</doi><tpages>7</tpages></addata></record> |
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| ispartof | Environmental science & technology, 2008-03, Vol.42 (6), p.2111-2117 |
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| language | eng |
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| source | MEDLINE; ACS Publications |
| subjects | Adsorbents Adsorption Air Pollutants - chemistry Air Pollution - prevention & control Applied sciences Benzofurans - chemistry Coke Dibenzofurans, Polychlorinated Dioxins Efficiency Emissions control Exact sciences and technology Filters Filtration Gases Industrial plants Industrial Waste Injections PCB Pollution Polychlorinated biphenyls Polychlorinated Biphenyls - chemistry Polychlorinated Dibenzodioxins - analogs & derivatives Polychlorinated Dibenzodioxins - chemistry Remediation and Control Technologies Waste Management - methods |
| title | Reduction of Dioxin-like Compound Emissions from a Waelz Plant with Adsorbent Injection and a Dual Baghouse Filter System |
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