Removal of H2S by metal ferrites produced in the purification of metal-bearing waste water. Study of the reaction mechanism
Waste water polluted with heavy metals can be successfully purified by precipitation of the metals from an alkaline solution containing iron (II), giving rise to a ferrite sludge. The solid metal ferrites obtained in this manner can be used to remove hydrogen sulphide from a gas stream. Based on a T...
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| Veröffentlicht in: | Water, air, and soil pollution air, and soil pollution, 2001-10, Vol.131 (1-4), p.367-381 |
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| creator | BARRADO, E PRIETO, F LOZANO, B ARENAS, F. J MEDINA, J |
| description | Waste water polluted with heavy metals can be successfully purified by precipitation of the metals from an alkaline solution containing iron (II), giving rise to a ferrite sludge. The solid metal ferrites obtained in this manner can be used to remove hydrogen sulphide from a gas stream. Based on a Taguchi experimental design, ferrite solid particle and pore size, and the temperature resulting in maximum retention of H sub(2)S by the solid were optimised. Under the optimum conditions, predicted by the method, each gram of ferrite was able to retain 0.274 g H sub(2)S. In addition, a ferrite containing a known lead concentration, obtained by the precipitation method under optimal conditions of pH, temperature and Fe/Pb ratio, was used to study the exothermic H sub(2)S retention reaction. The chemical reaction occurring between the ferrite and the H sub(2)S was investigated by characterisation of the compounds before (Pb sub(0.04)Fe super(II) sub(0.96) Fe super(III) sub(2)O sub(4).nH sub(2)O solids composed of Pb sub(x)Fe sub(3-x)O sub(4), magnetite Fe sub(3)O sub(4) and hydrated lead oxide PbO sub(n).H sub(2)O) and after (PbS, PbSO sub(4), S, FeS sub(2) and alpha -FeO(OH)) the retention process. |
| doi_str_mv | 10.1023/A:1011911619025 |
| format | Article |
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In addition, a ferrite containing a known lead concentration, obtained by the precipitation method under optimal conditions of pH, temperature and Fe/Pb ratio, was used to study the exothermic H sub(2)S retention reaction. The chemical reaction occurring between the ferrite and the H sub(2)S was investigated by characterisation of the compounds before (Pb sub(0.04)Fe super(II) sub(0.96) Fe super(III) sub(2)O sub(4).nH sub(2)O solids composed of Pb sub(x)Fe sub(3-x)O sub(4), magnetite Fe sub(3)O sub(4) and hydrated lead oxide PbO sub(n).H sub(2)O) and after (PbS, PbSO sub(4), S, FeS sub(2) and alpha -FeO(OH)) the retention process.</description><identifier>ISSN: 0049-6979</identifier><identifier>EISSN: 1573-2932</identifier><identifier>DOI: 10.1023/A:1011911619025</identifier><identifier>CODEN: WAPLAC</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Applied sciences ; Atmospheric pollution ; Chemical precipitation ; Environmental monitoring ; Exact sciences and technology ; Experimental design ; Ferrites ; General processes of purification and dust removal ; Heavy metals ; Hydrogen sulfide ; Iron ; Iron sulfides ; Lead ; Lead (metal) ; Magnetite ; Metals ; Optimization ; Pollution ; Pore size ; Precipitation ; Prevention and purification methods ; Retention ; Sludge ; Soil pollution ; Studies ; Waste water ; Wastewater ; Wastewater pollution ; Water pollution ; Water treatment</subject><ispartof>Water, air, and soil pollution, 2001-10, Vol.131 (1-4), p.367-381</ispartof><rights>2001 INIST-CNRS</rights><rights>Kluwer Academic Publishers 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27929,27930</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1124704$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>BARRADO, E</creatorcontrib><creatorcontrib>PRIETO, F</creatorcontrib><creatorcontrib>LOZANO, B</creatorcontrib><creatorcontrib>ARENAS, F. J</creatorcontrib><creatorcontrib>MEDINA, J</creatorcontrib><title>Removal of H2S by metal ferrites produced in the purification of metal-bearing waste water. Study of the reaction mechanism</title><title>Water, air, and soil pollution</title><description>Waste water polluted with heavy metals can be successfully purified by precipitation of the metals from an alkaline solution containing iron (II), giving rise to a ferrite sludge. The solid metal ferrites obtained in this manner can be used to remove hydrogen sulphide from a gas stream. Based on a Taguchi experimental design, ferrite solid particle and pore size, and the temperature resulting in maximum retention of H sub(2)S by the solid were optimised. Under the optimum conditions, predicted by the method, each gram of ferrite was able to retain 0.274 g H sub(2)S. In addition, a ferrite containing a known lead concentration, obtained by the precipitation method under optimal conditions of pH, temperature and Fe/Pb ratio, was used to study the exothermic H sub(2)S retention reaction. The chemical reaction occurring between the ferrite and the H sub(2)S was investigated by characterisation of the compounds before (Pb sub(0.04)Fe super(II) sub(0.96) Fe super(III) sub(2)O sub(4).nH sub(2)O solids composed of Pb sub(x)Fe sub(3-x)O sub(4), magnetite Fe sub(3)O sub(4) and hydrated lead oxide PbO sub(n).H sub(2)O) and after (PbS, PbSO sub(4), S, FeS sub(2) and alpha -FeO(OH)) the retention process.</description><subject>Applied sciences</subject><subject>Atmospheric pollution</subject><subject>Chemical precipitation</subject><subject>Environmental monitoring</subject><subject>Exact sciences and technology</subject><subject>Experimental design</subject><subject>Ferrites</subject><subject>General processes of purification and dust removal</subject><subject>Heavy metals</subject><subject>Hydrogen sulfide</subject><subject>Iron</subject><subject>Iron sulfides</subject><subject>Lead</subject><subject>Lead (metal)</subject><subject>Magnetite</subject><subject>Metals</subject><subject>Optimization</subject><subject>Pollution</subject><subject>Pore size</subject><subject>Precipitation</subject><subject>Prevention and purification methods</subject><subject>Retention</subject><subject>Sludge</subject><subject>Soil pollution</subject><subject>Studies</subject><subject>Waste water</subject><subject>Wastewater</subject><subject>Wastewater pollution</subject><subject>Water pollution</subject><subject>Water treatment</subject><issn>0049-6979</issn><issn>1573-2932</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNqN0M9rFTEQB_AgCj6rZ69BRHvZmsnPjbdS1AqFQqvnRzaZtSn745lkWx79583WnjzU5pAQ-MwM3yHkLbAjYFx8Ov4MDMACaLCMq2dkA8qIhlvBn5MNY9I22hr7krzK-ZrVY1uzIXcXOM43bqBzT0_5Je32dMRS_z2mFAtmuktzWDwGGidarpDulhT76F2J87RW3fOmQ5fi9Iveulyw3gXTEb0sS9ivZq1L6Px9zYj-yk0xj6_Ji94NGd88vAfk59cvP05Om7Pzb99Pjs-andCmNBgCai6F8i2EznrdB9sqKUGovgIAoQVKb5XmvAfnQhc65iQoFqTy1osD8vFv3xrl94K5bMeYPQ6Dm3Be8taouiPgRlb54VHJbQtMCPYEqDTTte__ILQA3MoVHj4OjTHAlQFR6bt_6PW8pKmusEZhwlgj1ijvH5DL3g19cpOPebtLcXRpv61TpWFS_AFwCa_J</recordid><startdate>20011001</startdate><enddate>20011001</enddate><creator>BARRADO, E</creator><creator>PRIETO, F</creator><creator>LOZANO, B</creator><creator>ARENAS, F. 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J ; MEDINA, J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p367t-edde62435c81db9c6fd98544135f36711363e4c95622f1aadbdb0a4150d45c9c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><topic>Applied sciences</topic><topic>Atmospheric pollution</topic><topic>Chemical precipitation</topic><topic>Environmental monitoring</topic><topic>Exact sciences and technology</topic><topic>Experimental design</topic><topic>Ferrites</topic><topic>General processes of purification and dust removal</topic><topic>Heavy metals</topic><topic>Hydrogen sulfide</topic><topic>Iron</topic><topic>Iron sulfides</topic><topic>Lead</topic><topic>Lead (metal)</topic><topic>Magnetite</topic><topic>Metals</topic><topic>Optimization</topic><topic>Pollution</topic><topic>Pore size</topic><topic>Precipitation</topic><topic>Prevention and purification methods</topic><topic>Retention</topic><topic>Sludge</topic><topic>Soil pollution</topic><topic>Studies</topic><topic>Waste water</topic><topic>Wastewater</topic><topic>Wastewater pollution</topic><topic>Water pollution</topic><topic>Water treatment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>BARRADO, E</creatorcontrib><creatorcontrib>PRIETO, F</creatorcontrib><creatorcontrib>LOZANO, B</creatorcontrib><creatorcontrib>ARENAS, F. 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J</au><au>MEDINA, J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Removal of H2S by metal ferrites produced in the purification of metal-bearing waste water. Study of the reaction mechanism</atitle><jtitle>Water, air, and soil pollution</jtitle><date>2001-10-01</date><risdate>2001</risdate><volume>131</volume><issue>1-4</issue><spage>367</spage><epage>381</epage><pages>367-381</pages><issn>0049-6979</issn><eissn>1573-2932</eissn><coden>WAPLAC</coden><abstract>Waste water polluted with heavy metals can be successfully purified by precipitation of the metals from an alkaline solution containing iron (II), giving rise to a ferrite sludge. The solid metal ferrites obtained in this manner can be used to remove hydrogen sulphide from a gas stream. Based on a Taguchi experimental design, ferrite solid particle and pore size, and the temperature resulting in maximum retention of H sub(2)S by the solid were optimised. Under the optimum conditions, predicted by the method, each gram of ferrite was able to retain 0.274 g H sub(2)S. In addition, a ferrite containing a known lead concentration, obtained by the precipitation method under optimal conditions of pH, temperature and Fe/Pb ratio, was used to study the exothermic H sub(2)S retention reaction. The chemical reaction occurring between the ferrite and the H sub(2)S was investigated by characterisation of the compounds before (Pb sub(0.04)Fe super(II) sub(0.96) Fe super(III) sub(2)O sub(4).nH sub(2)O solids composed of Pb sub(x)Fe sub(3-x)O sub(4), magnetite Fe sub(3)O sub(4) and hydrated lead oxide PbO sub(n).H sub(2)O) and after (PbS, PbSO sub(4), S, FeS sub(2) and alpha -FeO(OH)) the retention process.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1023/A:1011911619025</doi><tpages>15</tpages></addata></record> |
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| subjects | Applied sciences Atmospheric pollution Chemical precipitation Environmental monitoring Exact sciences and technology Experimental design Ferrites General processes of purification and dust removal Heavy metals Hydrogen sulfide Iron Iron sulfides Lead Lead (metal) Magnetite Metals Optimization Pollution Pore size Precipitation Prevention and purification methods Retention Sludge Soil pollution Studies Waste water Wastewater Wastewater pollution Water pollution Water treatment |
| title | Removal of H2S by metal ferrites produced in the purification of metal-bearing waste water. Study of the reaction mechanism |
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