Coal fly ash interaction with environmental fluids: Geochemical and strontium isotope results from combined column and batch leaching experiments
► Element release during fly ash extraction experiments controlled by mineralogy. ► Strontium isotopes in fly ash are not homogenized during coal combustion. ► Element correlations with 87Sr/86Sr indicate chemically resistant silicate phase. ► Sr isotopes can uniquely identify fly ash fluids leaking...
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| creator | Brubaker, Tonya M. Stewart, Brian W. Capo, Rosemary C. Schroeder, Karl T. Chapman, Elizabeth C. Spivak-Birndorf, Lev J. Vesper, Dorothy J. Cardone, Carol R. Rohar, Paul C. |
| description | ► Element release during fly ash extraction experiments controlled by mineralogy. ► Strontium isotopes in fly ash are not homogenized during coal combustion. ► Element correlations with 87Sr/86Sr indicate chemically resistant silicate phase. ► Sr isotopes can uniquely identify fly ash fluids leaking into the environment.
The major element and Sr isotope systematics and geochemistry of coal fly ash and its interactions with environmental waters were investigated using laboratory flow-through column leaching experiments (sodium carbonate, acetic acid, nitric acid) and sequential batch leaching experiments (water, acetic acid, hydrochloric acid). Column leaching of Class F fly ash samples shows rapid release of most major elements early in the leaching procedure, suggesting an association of these elements with soluble and surface bound phases. Delayed release of certain elements (e.g., Al, Fe, Si) signals gradual dissolution of more resistant silicate or glass phases as leaching continues. Strontium isotope results from both column and batch leaching experiments show a marked increase in 87Sr/86Sr ratio with continued leaching, yielding a total range of values from 0.7107 to 0.7138. For comparison, the isotopic composition of fluid output from a fly ash impoundment in West Virginia falls in a narrow range around 0.7124. The experimental data suggest the presence of a more resistant, highly radiogenic silicate phase that survives the combustion process and is leached after the more soluble minerals are removed. Strontium isotopic homogenization of minerals in coal does not always occur during the combustion process, despite the high temperatures encountered in the boiler. Early-released Sr tends to be isotopically uniform; thus the Sr isotopic composition of fly ash could be distinguishable from other sources and is a useful tool for quantifying the possible contribution of fly ash leaching to the total dissolved load in natural surface and ground waters. |
| doi_str_mv | 10.1016/j.apgeochem.2012.09.001 |
| format | Article |
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The major element and Sr isotope systematics and geochemistry of coal fly ash and its interactions with environmental waters were investigated using laboratory flow-through column leaching experiments (sodium carbonate, acetic acid, nitric acid) and sequential batch leaching experiments (water, acetic acid, hydrochloric acid). Column leaching of Class F fly ash samples shows rapid release of most major elements early in the leaching procedure, suggesting an association of these elements with soluble and surface bound phases. Delayed release of certain elements (e.g., Al, Fe, Si) signals gradual dissolution of more resistant silicate or glass phases as leaching continues. Strontium isotope results from both column and batch leaching experiments show a marked increase in 87Sr/86Sr ratio with continued leaching, yielding a total range of values from 0.7107 to 0.7138. For comparison, the isotopic composition of fluid output from a fly ash impoundment in West Virginia falls in a narrow range around 0.7124. The experimental data suggest the presence of a more resistant, highly radiogenic silicate phase that survives the combustion process and is leached after the more soluble minerals are removed. Strontium isotopic homogenization of minerals in coal does not always occur during the combustion process, despite the high temperatures encountered in the boiler. Early-released Sr tends to be isotopically uniform; thus the Sr isotopic composition of fly ash could be distinguishable from other sources and is a useful tool for quantifying the possible contribution of fly ash leaching to the total dissolved load in natural surface and ground waters.</description><identifier>ISSN: 0883-2927</identifier><identifier>EISSN: 1872-9134</identifier><identifier>DOI: 10.1016/j.apgeochem.2012.09.001</identifier><identifier>CODEN: APPGEY</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>01 COAL, LIGNITE, AND PEAT ; acetic acid ; aluminum ; coal ; coal fly ash ; combustion ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; ENVIRONMENTAL SCIENCES ; Exact sciences and technology ; Geochemistry ; GEOSCIENCES ; glass ; groundwater ; homogenization ; hydrochloric acid ; iron ; isotopes ; leaching ; minerals ; nitric acid ; Pollution, environment geology ; silicon ; sodium carbonate ; strontium ; temperature</subject><ispartof>APPLIED GEOCHEMISTRY, 2013-05, Vol.32, p.184-194</ispartof><rights>2012 Elsevier Ltd</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a501t-4056c39cacac21c5119332a0d674e8511ba92af86ed5715d7578c733c9e149a13</citedby><cites>FETCH-LOGICAL-a501t-4056c39cacac21c5119332a0d674e8511ba92af86ed5715d7578c733c9e149a13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.apgeochem.2012.09.001$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>309,310,314,776,780,785,786,881,3536,23910,23911,25119,27903,27904,45974</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27398419$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/1129856$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Brubaker, Tonya M.</creatorcontrib><creatorcontrib>Stewart, Brian W.</creatorcontrib><creatorcontrib>Capo, Rosemary C.</creatorcontrib><creatorcontrib>Schroeder, Karl T.</creatorcontrib><creatorcontrib>Chapman, Elizabeth C.</creatorcontrib><creatorcontrib>Spivak-Birndorf, Lev J.</creatorcontrib><creatorcontrib>Vesper, Dorothy J.</creatorcontrib><creatorcontrib>Cardone, Carol R.</creatorcontrib><creatorcontrib>Rohar, Paul C.</creatorcontrib><creatorcontrib>National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research</creatorcontrib><title>Coal fly ash interaction with environmental fluids: Geochemical and strontium isotope results from combined column and batch leaching experiments</title><title>APPLIED GEOCHEMISTRY</title><description>► Element release during fly ash extraction experiments controlled by mineralogy. ► Strontium isotopes in fly ash are not homogenized during coal combustion. ► Element correlations with 87Sr/86Sr indicate chemically resistant silicate phase. ► Sr isotopes can uniquely identify fly ash fluids leaking into the environment.
The major element and Sr isotope systematics and geochemistry of coal fly ash and its interactions with environmental waters were investigated using laboratory flow-through column leaching experiments (sodium carbonate, acetic acid, nitric acid) and sequential batch leaching experiments (water, acetic acid, hydrochloric acid). Column leaching of Class F fly ash samples shows rapid release of most major elements early in the leaching procedure, suggesting an association of these elements with soluble and surface bound phases. Delayed release of certain elements (e.g., Al, Fe, Si) signals gradual dissolution of more resistant silicate or glass phases as leaching continues. Strontium isotope results from both column and batch leaching experiments show a marked increase in 87Sr/86Sr ratio with continued leaching, yielding a total range of values from 0.7107 to 0.7138. For comparison, the isotopic composition of fluid output from a fly ash impoundment in West Virginia falls in a narrow range around 0.7124. The experimental data suggest the presence of a more resistant, highly radiogenic silicate phase that survives the combustion process and is leached after the more soluble minerals are removed. Strontium isotopic homogenization of minerals in coal does not always occur during the combustion process, despite the high temperatures encountered in the boiler. Early-released Sr tends to be isotopically uniform; thus the Sr isotopic composition of fly ash could be distinguishable from other sources and is a useful tool for quantifying the possible contribution of fly ash leaching to the total dissolved load in natural surface and ground waters.</description><subject>01 COAL, LIGNITE, AND PEAT</subject><subject>acetic acid</subject><subject>aluminum</subject><subject>coal</subject><subject>coal fly ash</subject><subject>combustion</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>ENVIRONMENTAL SCIENCES</subject><subject>Exact sciences and technology</subject><subject>Geochemistry</subject><subject>GEOSCIENCES</subject><subject>glass</subject><subject>groundwater</subject><subject>homogenization</subject><subject>hydrochloric acid</subject><subject>iron</subject><subject>isotopes</subject><subject>leaching</subject><subject>minerals</subject><subject>nitric acid</subject><subject>Pollution, environment geology</subject><subject>silicon</subject><subject>sodium carbonate</subject><subject>strontium</subject><subject>temperature</subject><issn>0883-2927</issn><issn>1872-9134</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqFkc9u1DAQxiMEEkvhGWohIXFJsJ0_trlVKyhIlThAz9asM9l4ldiL7bT0MXhjnKbqFflgj_Wb-WbmK4pLRitGWffpVMH5iN6MOFecMl5RVVHKXhQ7JgUvFaubl8WOSlmXXHHxungT44lS2grKd8XfvYeJDNMDgTgS6xIGMMl6R-5tGgm6Oxu8m9GlR2yxffxMrjc5a_IfuJ7ElJlkl5nY6JM_IwkYlylFMgQ_E-Png3XY58e0zO4x5QDJjGRCMKN1R4J_zhjsKhPfFq8GmCK-e7ovituvX37tv5U3P66_769uSmgpS2VD287UykA-nJmWMVXXHGjfiQZlDg-gOAyyw74VrO1FK6QRdW0UskYBqy-K91tdH5PV0diEZjTeOTRJM8aVbLsMfdygc_C_F4xJzzYanCZw6JeoWUupkFw2KqNiQ03wMQYc9DlPBOFBM6pXp_RJPzulV6c0VTo7lTM_PIlAzCsdAjhj43M6F7WSDVsVLjduAK_hGDJz-zMXyj1wyjlfiauNwLy4O4thnQudwd6Gdaze2_928w-967lj</recordid><startdate>20130501</startdate><enddate>20130501</enddate><creator>Brubaker, Tonya M.</creator><creator>Stewart, Brian W.</creator><creator>Capo, Rosemary C.</creator><creator>Schroeder, Karl T.</creator><creator>Chapman, Elizabeth C.</creator><creator>Spivak-Birndorf, Lev J.</creator><creator>Vesper, Dorothy J.</creator><creator>Cardone, Carol R.</creator><creator>Rohar, Paul C.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope><scope>OTOTI</scope></search><sort><creationdate>20130501</creationdate><title>Coal fly ash interaction with environmental fluids: Geochemical and strontium isotope results from combined column and batch leaching experiments</title><author>Brubaker, Tonya M. ; Stewart, Brian W. ; Capo, Rosemary C. ; Schroeder, Karl T. ; Chapman, Elizabeth C. ; Spivak-Birndorf, Lev J. ; Vesper, Dorothy J. ; Cardone, Carol R. ; Rohar, Paul C.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a501t-4056c39cacac21c5119332a0d674e8511ba92af86ed5715d7578c733c9e149a13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>01 COAL, LIGNITE, AND PEAT</topic><topic>acetic acid</topic><topic>aluminum</topic><topic>coal</topic><topic>coal fly ash</topic><topic>combustion</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>ENVIRONMENTAL SCIENCES</topic><topic>Exact sciences and technology</topic><topic>Geochemistry</topic><topic>GEOSCIENCES</topic><topic>glass</topic><topic>groundwater</topic><topic>homogenization</topic><topic>hydrochloric acid</topic><topic>iron</topic><topic>isotopes</topic><topic>leaching</topic><topic>minerals</topic><topic>nitric acid</topic><topic>Pollution, environment geology</topic><topic>silicon</topic><topic>sodium carbonate</topic><topic>strontium</topic><topic>temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Brubaker, Tonya M.</creatorcontrib><creatorcontrib>Stewart, Brian W.</creatorcontrib><creatorcontrib>Capo, Rosemary C.</creatorcontrib><creatorcontrib>Schroeder, Karl T.</creatorcontrib><creatorcontrib>Chapman, Elizabeth C.</creatorcontrib><creatorcontrib>Spivak-Birndorf, Lev J.</creatorcontrib><creatorcontrib>Vesper, Dorothy J.</creatorcontrib><creatorcontrib>Cardone, Carol R.</creatorcontrib><creatorcontrib>Rohar, Paul C.</creatorcontrib><creatorcontrib>National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><collection>OSTI.GOV</collection><jtitle>APPLIED GEOCHEMISTRY</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Brubaker, Tonya M.</au><au>Stewart, Brian W.</au><au>Capo, Rosemary C.</au><au>Schroeder, Karl T.</au><au>Chapman, Elizabeth C.</au><au>Spivak-Birndorf, Lev J.</au><au>Vesper, Dorothy J.</au><au>Cardone, Carol R.</au><au>Rohar, Paul C.</au><aucorp>National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coal fly ash interaction with environmental fluids: Geochemical and strontium isotope results from combined column and batch leaching experiments</atitle><jtitle>APPLIED GEOCHEMISTRY</jtitle><date>2013-05-01</date><risdate>2013</risdate><volume>32</volume><spage>184</spage><epage>194</epage><pages>184-194</pages><issn>0883-2927</issn><eissn>1872-9134</eissn><coden>APPGEY</coden><abstract>► Element release during fly ash extraction experiments controlled by mineralogy. ► Strontium isotopes in fly ash are not homogenized during coal combustion. ► Element correlations with 87Sr/86Sr indicate chemically resistant silicate phase. ► Sr isotopes can uniquely identify fly ash fluids leaking into the environment.
The major element and Sr isotope systematics and geochemistry of coal fly ash and its interactions with environmental waters were investigated using laboratory flow-through column leaching experiments (sodium carbonate, acetic acid, nitric acid) and sequential batch leaching experiments (water, acetic acid, hydrochloric acid). Column leaching of Class F fly ash samples shows rapid release of most major elements early in the leaching procedure, suggesting an association of these elements with soluble and surface bound phases. Delayed release of certain elements (e.g., Al, Fe, Si) signals gradual dissolution of more resistant silicate or glass phases as leaching continues. Strontium isotope results from both column and batch leaching experiments show a marked increase in 87Sr/86Sr ratio with continued leaching, yielding a total range of values from 0.7107 to 0.7138. For comparison, the isotopic composition of fluid output from a fly ash impoundment in West Virginia falls in a narrow range around 0.7124. The experimental data suggest the presence of a more resistant, highly radiogenic silicate phase that survives the combustion process and is leached after the more soluble minerals are removed. Strontium isotopic homogenization of minerals in coal does not always occur during the combustion process, despite the high temperatures encountered in the boiler. Early-released Sr tends to be isotopically uniform; thus the Sr isotopic composition of fly ash could be distinguishable from other sources and is a useful tool for quantifying the possible contribution of fly ash leaching to the total dissolved load in natural surface and ground waters.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.apgeochem.2012.09.001</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | 01 COAL, LIGNITE, AND PEAT acetic acid aluminum coal coal fly ash combustion Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics ENVIRONMENTAL SCIENCES Exact sciences and technology Geochemistry GEOSCIENCES glass groundwater homogenization hydrochloric acid iron isotopes leaching minerals nitric acid Pollution, environment geology silicon sodium carbonate strontium temperature |
| title | Coal fly ash interaction with environmental fluids: Geochemical and strontium isotope results from combined column and batch leaching experiments |
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