Application of chitosan as flocculant for coprecipitation of Mn(II) and suspended solids from dual-alkali FGD regenerating process
Heavy metals and suspended solid (SS) needed to be removed from the recirculation of dual-alkali flue gas desulfurization (FGD) system. The feasibility of coprecipitation of heavy metal and SS by water-soluble chitosan was studied in a lab scale experiment. The association between chitosan and metal...
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| Veröffentlicht in: | Journal of hazardous materials 2008-04, Vol.152 (2), p.757-764 |
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| container_title | Journal of hazardous materials |
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| creator | Wu, Zhong-Biao Ni, Wei-Min Guan, Bao-Hong |
| description | Heavy metals and suspended solid (SS) needed to be removed from the recirculation of dual-alkali flue gas desulfurization (FGD) system. The feasibility of coprecipitation of heavy metal and SS by water-soluble chitosan was studied in a lab scale experiment. The association between chitosan and metal ions was verified through DSC and FT-IR. The pH investigation revealed that at the pH ranged from 5 to 9, there were three stages for different actions: adsorption of chitosan for Mn(II), precipitation of manganese hydroxide and coprecipitation of manganese hydroxide and chitosan–Mn(II) complex. The ion selectivity experiments showed that the occurrence of Ca(II) in the solution had little influence on the adsorption of chitosan for Mn(II). The decrease rate of adsorption capacity was about 0.0023
mmol
g
−1 per 1
mg
L
−1 Ca(II). When adsorption and flocculation of chitosan occurred at the same time and at the sufficient addition of chitosan, chitosan not only made solids flocculate but also enhanced sorption capacity of chitosan. Application of chitosan for coprecipitation of Mn(II) and SS could remove Mn(II) efficiently and improve the settling characteristics of SS from dual-alkali FGD regenerating process. |
| doi_str_mv | 10.1016/j.jhazmat.2007.07.042 |
| format | Article |
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mmol
g
−1 per 1
mg
L
−1 Ca(II). When adsorption and flocculation of chitosan occurred at the same time and at the sufficient addition of chitosan, chitosan not only made solids flocculate but also enhanced sorption capacity of chitosan. Application of chitosan for coprecipitation of Mn(II) and SS could remove Mn(II) efficiently and improve the settling characteristics of SS from dual-alkali FGD regenerating process.</description><identifier>ISSN: 0304-3894</identifier><identifier>EISSN: 1873-3336</identifier><identifier>DOI: 10.1016/j.jhazmat.2007.07.042</identifier><identifier>PMID: 17764834</identifier><identifier>CODEN: JHMAD9</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Adsorption ; Applied sciences ; Atmospheric pollution ; Chelating Agents ; Chemical engineering ; Chemical Precipitation ; Chitosan ; Coal ; Dual-alkali FGD ; Exact sciences and technology ; Flocculation ; General processes of purification and dust removal ; Incineration ; Liquid-liquid and fluid-solid mechanical separations ; Manganese ; Manganese - isolation & purification ; Metals, Heavy - isolation & purification ; Pollution ; Power Plants ; Prevention and purification methods ; Settling</subject><ispartof>Journal of hazardous materials, 2008-04, Vol.152 (2), p.757-764</ispartof><rights>2007 Elsevier B.V.</rights><rights>2008 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c496t-54a2077fc5b8da3e8bc44d94714b02e6a1a4b522fd0e75e8861002e2b54bb25b3</citedby><cites>FETCH-LOGICAL-c496t-54a2077fc5b8da3e8bc44d94714b02e6a1a4b522fd0e75e8861002e2b54bb25b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0304389407010722$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=20196494$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17764834$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wu, Zhong-Biao</creatorcontrib><creatorcontrib>Ni, Wei-Min</creatorcontrib><creatorcontrib>Guan, Bao-Hong</creatorcontrib><title>Application of chitosan as flocculant for coprecipitation of Mn(II) and suspended solids from dual-alkali FGD regenerating process</title><title>Journal of hazardous materials</title><addtitle>J Hazard Mater</addtitle><description>Heavy metals and suspended solid (SS) needed to be removed from the recirculation of dual-alkali flue gas desulfurization (FGD) system. The feasibility of coprecipitation of heavy metal and SS by water-soluble chitosan was studied in a lab scale experiment. The association between chitosan and metal ions was verified through DSC and FT-IR. The pH investigation revealed that at the pH ranged from 5 to 9, there were three stages for different actions: adsorption of chitosan for Mn(II), precipitation of manganese hydroxide and coprecipitation of manganese hydroxide and chitosan–Mn(II) complex. The ion selectivity experiments showed that the occurrence of Ca(II) in the solution had little influence on the adsorption of chitosan for Mn(II). The decrease rate of adsorption capacity was about 0.0023
mmol
g
−1 per 1
mg
L
−1 Ca(II). When adsorption and flocculation of chitosan occurred at the same time and at the sufficient addition of chitosan, chitosan not only made solids flocculate but also enhanced sorption capacity of chitosan. Application of chitosan for coprecipitation of Mn(II) and SS could remove Mn(II) efficiently and improve the settling characteristics of SS from dual-alkali FGD regenerating process.</description><subject>Adsorption</subject><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Chelating Agents</subject><subject>Chemical engineering</subject><subject>Chemical Precipitation</subject><subject>Chitosan</subject><subject>Coal</subject><subject>Dual-alkali FGD</subject><subject>Exact sciences and technology</subject><subject>Flocculation</subject><subject>General processes of purification and dust removal</subject><subject>Incineration</subject><subject>Liquid-liquid and fluid-solid mechanical separations</subject><subject>Manganese</subject><subject>Manganese - isolation & purification</subject><subject>Metals, Heavy - isolation & purification</subject><subject>Pollution</subject><subject>Power Plants</subject><subject>Prevention and purification methods</subject><subject>Settling</subject><issn>0304-3894</issn><issn>1873-3336</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU1v1DAQhiMEokvhJ4B8AZVDFn_G3hOqWlpWKuICZ8txJq0Xxw52ggRHfjmONirHlUayNXpm5p15q-o1wVuCSfPhsD08mD-DmbYUY7ldgtMn1YYoyWrGWPO02mCGec3Ujp9VL3I-YIyJFPx5dUakbLhifFP9vRxH76yZXAwo9sg-uClmE5DJqPfR2tmbMKE-JmTjmMC60U2P9Jdwsd-_RyZ0KM95hNBB-UXvulKd4oC62fja-B_GO3Rze40S3EOAVBqEezSmaCHnl9Wz3vgMr9b3vPp-8-nb1ef67uvt_uryrrZ810y14IZiKXsrWtUZBqq1nHc7LglvMYXGEMNbQWnfYZAClGoILnnaCt62VLTsvHp37Fvm_pwhT3pw2YIvC0Kcs5aYSUkVPQkyKhrKFDsJkl2jGBGygOII2hRzTtDrMbnBpN-aYL3YqQ96tVMvduol-KLkzTpgbgfo_let_hXg7QqYbI3vkwnW5UeO4iKB7xbu45GDcuBfDpLO1kGw0Lni6aS76E5I-QegO8Gq</recordid><startdate>20080401</startdate><enddate>20080401</enddate><creator>Wu, Zhong-Biao</creator><creator>Ni, Wei-Min</creator><creator>Guan, Bao-Hong</creator><general>Elsevier B.V</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>7TV</scope><scope>7U7</scope><scope>C1K</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope></search><sort><creationdate>20080401</creationdate><title>Application of chitosan as flocculant for coprecipitation of Mn(II) and suspended solids from dual-alkali FGD regenerating process</title><author>Wu, Zhong-Biao ; Ni, Wei-Min ; Guan, Bao-Hong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c496t-54a2077fc5b8da3e8bc44d94714b02e6a1a4b522fd0e75e8861002e2b54bb25b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Adsorption</topic><topic>Applied sciences</topic><topic>Atmospheric pollution</topic><topic>Chelating Agents</topic><topic>Chemical engineering</topic><topic>Chemical Precipitation</topic><topic>Chitosan</topic><topic>Coal</topic><topic>Dual-alkali FGD</topic><topic>Exact sciences and technology</topic><topic>Flocculation</topic><topic>General processes of purification and dust removal</topic><topic>Incineration</topic><topic>Liquid-liquid and fluid-solid mechanical separations</topic><topic>Manganese</topic><topic>Manganese - isolation & purification</topic><topic>Metals, Heavy - isolation & purification</topic><topic>Pollution</topic><topic>Power Plants</topic><topic>Prevention and purification methods</topic><topic>Settling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wu, Zhong-Biao</creatorcontrib><creatorcontrib>Ni, Wei-Min</creatorcontrib><creatorcontrib>Guan, Bao-Hong</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>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of hazardous materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wu, Zhong-Biao</au><au>Ni, Wei-Min</au><au>Guan, Bao-Hong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of chitosan as flocculant for coprecipitation of Mn(II) and suspended solids from dual-alkali FGD regenerating process</atitle><jtitle>Journal of hazardous materials</jtitle><addtitle>J Hazard Mater</addtitle><date>2008-04-01</date><risdate>2008</risdate><volume>152</volume><issue>2</issue><spage>757</spage><epage>764</epage><pages>757-764</pages><issn>0304-3894</issn><eissn>1873-3336</eissn><coden>JHMAD9</coden><abstract>Heavy metals and suspended solid (SS) needed to be removed from the recirculation of dual-alkali flue gas desulfurization (FGD) system. The feasibility of coprecipitation of heavy metal and SS by water-soluble chitosan was studied in a lab scale experiment. The association between chitosan and metal ions was verified through DSC and FT-IR. The pH investigation revealed that at the pH ranged from 5 to 9, there were three stages for different actions: adsorption of chitosan for Mn(II), precipitation of manganese hydroxide and coprecipitation of manganese hydroxide and chitosan–Mn(II) complex. The ion selectivity experiments showed that the occurrence of Ca(II) in the solution had little influence on the adsorption of chitosan for Mn(II). The decrease rate of adsorption capacity was about 0.0023
mmol
g
−1 per 1
mg
L
−1 Ca(II). When adsorption and flocculation of chitosan occurred at the same time and at the sufficient addition of chitosan, chitosan not only made solids flocculate but also enhanced sorption capacity of chitosan. Application of chitosan for coprecipitation of Mn(II) and SS could remove Mn(II) efficiently and improve the settling characteristics of SS from dual-alkali FGD regenerating process.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><pmid>17764834</pmid><doi>10.1016/j.jhazmat.2007.07.042</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of hazardous materials, 2008-04, Vol.152 (2), p.757-764 |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Adsorption Applied sciences Atmospheric pollution Chelating Agents Chemical engineering Chemical Precipitation Chitosan Coal Dual-alkali FGD Exact sciences and technology Flocculation General processes of purification and dust removal Incineration Liquid-liquid and fluid-solid mechanical separations Manganese Manganese - isolation & purification Metals, Heavy - isolation & purification Pollution Power Plants Prevention and purification methods Settling |
| title | Application of chitosan as flocculant for coprecipitation of Mn(II) and suspended solids from dual-alkali FGD regenerating process |
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