Application of solar thermal desorption to remediation of mercury-contaminated soils
Solar thermal desorption at temperatures up to 500 °C is an innovative technology applied to the removal of mercury and arsenic from soil polluted by mining operations. As the soil is heated in a low and high-temperature solar system, the pollutant vapor pressure rises, producing mass transfer to th...
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| Veröffentlicht in: | Solar energy 2009-08, Vol.83 (8), p.1405-1414 |
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| creator | Navarro, A. Cañadas, I. Martinez, D. Rodriguez, J. Mendoza, J.L. |
| description | Solar thermal desorption at temperatures up to 500
°C is an innovative technology applied to the removal of mercury and arsenic from soil polluted by mining operations. As the soil is heated in a low and high-temperature solar system, the pollutant vapor pressure rises, producing mass transfer to the gas phase, which is then extracted by vacuum pumps and blower systems.
In the UPC low-temperature experiments, removal of mercury from the polluted soil was as much as 76%. The experimental results show that volatilization of mercury is only significant when the temperature is above approximately 130
°C, which agrees with the predominant mercury solid phases detected. PSA middle-temperature experiments, showed that when soil and mine waste samples were heated to 400–500
°C, mercury elimination was significant (41.3–87%). However, the results from heating to 320
°C or below 300
°C, indicated little or negligible removal, possibly, because the fluid dynamics in the fluidized-bed module and the presence of cinnabar and pyrite rich-Hg as dominant mineral phases.
These results show the potential for efficiently removing mercury and other pollutants from solid matrices (soil, waste, etc.) at low temperatures. |
| doi_str_mv | 10.1016/j.solener.2009.03.013 |
| format | Article |
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°C is an innovative technology applied to the removal of mercury and arsenic from soil polluted by mining operations. As the soil is heated in a low and high-temperature solar system, the pollutant vapor pressure rises, producing mass transfer to the gas phase, which is then extracted by vacuum pumps and blower systems.
In the UPC low-temperature experiments, removal of mercury from the polluted soil was as much as 76%. The experimental results show that volatilization of mercury is only significant when the temperature is above approximately 130
°C, which agrees with the predominant mercury solid phases detected. PSA middle-temperature experiments, showed that when soil and mine waste samples were heated to 400–500
°C, mercury elimination was significant (41.3–87%). However, the results from heating to 320
°C or below 300
°C, indicated little or negligible removal, possibly, because the fluid dynamics in the fluidized-bed module and the presence of cinnabar and pyrite rich-Hg as dominant mineral phases.
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°C is an innovative technology applied to the removal of mercury and arsenic from soil polluted by mining operations. As the soil is heated in a low and high-temperature solar system, the pollutant vapor pressure rises, producing mass transfer to the gas phase, which is then extracted by vacuum pumps and blower systems.
In the UPC low-temperature experiments, removal of mercury from the polluted soil was as much as 76%. The experimental results show that volatilization of mercury is only significant when the temperature is above approximately 130
°C, which agrees with the predominant mercury solid phases detected. PSA middle-temperature experiments, showed that when soil and mine waste samples were heated to 400–500
°C, mercury elimination was significant (41.3–87%). However, the results from heating to 320
°C or below 300
°C, indicated little or negligible removal, possibly, because the fluid dynamics in the fluidized-bed module and the presence of cinnabar and pyrite rich-Hg as dominant mineral phases.
These results show the potential for efficiently removing mercury and other pollutants from solid matrices (soil, waste, etc.) at low temperatures.</description><subject>Applied sciences</subject><subject>Arsenic removal</subject><subject>Desorption</subject><subject>Energy</subject><subject>Exact sciences and technology</subject><subject>Fluid dynamics</subject><subject>Heating</subject><subject>Mass transfer</subject><subject>Matrices</subject><subject>Mercury</subject><subject>Mine wastes</subject><subject>Miscellaneous</subject><subject>Natural energy</subject><subject>Pollutants</subject><subject>Remediation</subject><subject>Soil contamination</subject><subject>Soils</subject><subject>Solar energy</subject><subject>Solar system</subject><subject>Temperature</subject><issn>0038-092X</issn><issn>1471-1257</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqFkU9LxDAQxYMouK5-BKEIemudJG3TnGRZ_AeCBz14C9lkilnapiZdwW9v1l08ePE0h_m9N8x7hJxTKCjQ-npdRN_hgKFgALIAXgDlB2RGS0FzyipxSGYAvMlBsrdjchLjGoAK2ogZeV2MY-eMnpwfMt9myUmHbHrH0Osusxh9GH92k88C9mjdL9pjMJvwlRs_TLp3g57QJr3r4ik5anUX8Ww_5-Tl7vZ1-ZA_Pd8_LhdPuSlrOeV2ZflKGwqtlbKhJQCYVspW2qbkXNQAurLMSMGt5MIwLZhENIzVUuOKz8nVznUM_mODcVK9iwa7Tg_oN1Hxsq4Zk_W_IIOmaVIgCbz4A679JgzpBcU4FSxd3rpVO8gEH2PAVo3B9Tp8KQpq24daq30fatuHAq5SH0l3uTfX0eiuDXowLv6KGRVVWVeQuJsdhym5T5dconE4mBR9QDMp690_l74BUq2kVQ</recordid><startdate>20090801</startdate><enddate>20090801</enddate><creator>Navarro, A.</creator><creator>Cañadas, I.</creator><creator>Martinez, D.</creator><creator>Rodriguez, J.</creator><creator>Mendoza, J.L.</creator><general>Elsevier Ltd</general><general>Elsevier</general><general>Pergamon Press Inc</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope><scope>SOI</scope><scope>7U6</scope><scope>7SU</scope></search><sort><creationdate>20090801</creationdate><title>Application of solar thermal desorption to remediation of mercury-contaminated soils</title><author>Navarro, A. ; Cañadas, I. ; Martinez, D. ; Rodriguez, J. ; Mendoza, J.L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c469t-dbd3bac10fd99814000cf99f9d84337600a5d2c973d937c2a729eec2269aeb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Arsenic removal</topic><topic>Desorption</topic><topic>Energy</topic><topic>Exact sciences and technology</topic><topic>Fluid dynamics</topic><topic>Heating</topic><topic>Mass transfer</topic><topic>Matrices</topic><topic>Mercury</topic><topic>Mine wastes</topic><topic>Miscellaneous</topic><topic>Natural energy</topic><topic>Pollutants</topic><topic>Remediation</topic><topic>Soil contamination</topic><topic>Soils</topic><topic>Solar energy</topic><topic>Solar system</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Navarro, A.</creatorcontrib><creatorcontrib>Cañadas, I.</creatorcontrib><creatorcontrib>Martinez, D.</creatorcontrib><creatorcontrib>Rodriguez, J.</creatorcontrib><creatorcontrib>Mendoza, J.L.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environmental Engineering Abstracts</collection><jtitle>Solar energy</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Navarro, A.</au><au>Cañadas, I.</au><au>Martinez, D.</au><au>Rodriguez, J.</au><au>Mendoza, J.L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Application of solar thermal desorption to remediation of mercury-contaminated soils</atitle><jtitle>Solar energy</jtitle><date>2009-08-01</date><risdate>2009</risdate><volume>83</volume><issue>8</issue><spage>1405</spage><epage>1414</epage><pages>1405-1414</pages><issn>0038-092X</issn><eissn>1471-1257</eissn><coden>SRENA4</coden><abstract>Solar thermal desorption at temperatures up to 500
°C is an innovative technology applied to the removal of mercury and arsenic from soil polluted by mining operations. As the soil is heated in a low and high-temperature solar system, the pollutant vapor pressure rises, producing mass transfer to the gas phase, which is then extracted by vacuum pumps and blower systems.
In the UPC low-temperature experiments, removal of mercury from the polluted soil was as much as 76%. The experimental results show that volatilization of mercury is only significant when the temperature is above approximately 130
°C, which agrees with the predominant mercury solid phases detected. PSA middle-temperature experiments, showed that when soil and mine waste samples were heated to 400–500
°C, mercury elimination was significant (41.3–87%). However, the results from heating to 320
°C or below 300
°C, indicated little or negligible removal, possibly, because the fluid dynamics in the fluidized-bed module and the presence of cinnabar and pyrite rich-Hg as dominant mineral phases.
These results show the potential for efficiently removing mercury and other pollutants from solid matrices (soil, waste, etc.) at low temperatures.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.solener.2009.03.013</doi><tpages>10</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Arsenic removal Desorption Energy Exact sciences and technology Fluid dynamics Heating Mass transfer Matrices Mercury Mine wastes Miscellaneous Natural energy Pollutants Remediation Soil contamination Soils Solar energy Solar system Temperature |
| title | Application of solar thermal desorption to remediation of mercury-contaminated soils |
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