Metals Removal and Recovery from Municipal Sludge
Primary, digested primary, waste activated, and digested waste activated sludges were treated with sulfuric acid or ethylenedinitrilo-tetraacetic acid to effect metal solubilization for metal removal. On the average, one-half metric ton of acid per dry metric ton sludge solids (24 hr) was required t...
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| Veröffentlicht in: | Journal - Water Pollution Control Federation 1981-01, Vol.53 (1), p.25-32 |
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| container_title | Journal - Water Pollution Control Federation |
| container_volume | 53 |
| creator | Jenkins, Richard L. Scheybeler, Benjamin J. Smith, Marvin L. Baird, Rodger Lo, Mingon P. Haug, Roger T. |
| description | Primary, digested primary, waste activated, and digested waste activated sludges were treated with sulfuric acid or ethylenedinitrilo-tetraacetic acid to effect metal solubilization for metal removal. On the average, one-half metric ton of acid per dry metric ton sludge solids (24 hr) was required to solubilize Cu (5%), Pb (32%), and Cd (66%), these being the most difficult metals to release from the sludge solids. Ethylenedinitrilo-tetraacetic acid showed higher removals than acid for Cu, Pb, and Cd, but an average of one metric ton ethylenedinitrilo-tetraacetic acid per metric ton dry sludge solids was required. Treatment of pregnant metal liquors with lime was effective in precipitating > 93% of the metals of interest; however, the quantities of metals recovered were inconsequential from an economic standpoint. |
| format | Article |
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On the average, one-half metric ton of acid per dry metric ton sludge solids (24 hr) was required to solubilize Cu (5%), Pb (32%), and Cd (66%), these being the most difficult metals to release from the sludge solids. Ethylenedinitrilo-tetraacetic acid showed higher removals than acid for Cu, Pb, and Cd, but an average of one metric ton ethylenedinitrilo-tetraacetic acid per metric ton dry sludge solids was required. Treatment of pregnant metal liquors with lime was effective in precipitating > 93% of the metals of interest; however, the quantities of metals recovered were inconsequential from an economic standpoint.</description><identifier>ISSN: 0043-1303</identifier><language>eng</language><publisher>Water Pollution Control Federation</publisher><subject>Acid treatment ; Chemical precipitation ; Heavy metals ; Plant Operations ; Sewage sludge ; Sludge ; Sludge digestion ; Sludge treatment ; Solubilization ; Sulfuric acids</subject><ispartof>Journal - Water Pollution Control Federation, 1981-01, Vol.53 (1), p.25-32</ispartof><rights>Copyright 1981 Water Pollution Control Federation</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/25041014$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/25041014$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,57992,58225</link.rule.ids></links><search><creatorcontrib>Jenkins, Richard L.</creatorcontrib><creatorcontrib>Scheybeler, Benjamin J.</creatorcontrib><creatorcontrib>Smith, Marvin L.</creatorcontrib><creatorcontrib>Baird, Rodger</creatorcontrib><creatorcontrib>Lo, Mingon P.</creatorcontrib><creatorcontrib>Haug, Roger T.</creatorcontrib><title>Metals Removal and Recovery from Municipal Sludge</title><title>Journal - Water Pollution Control Federation</title><description>Primary, digested primary, waste activated, and digested waste activated sludges were treated with sulfuric acid or ethylenedinitrilo-tetraacetic acid to effect metal solubilization for metal removal. On the average, one-half metric ton of acid per dry metric ton sludge solids (24 hr) was required to solubilize Cu (5%), Pb (32%), and Cd (66%), these being the most difficult metals to release from the sludge solids. Ethylenedinitrilo-tetraacetic acid showed higher removals than acid for Cu, Pb, and Cd, but an average of one metric ton ethylenedinitrilo-tetraacetic acid per metric ton dry sludge solids was required. 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On the average, one-half metric ton of acid per dry metric ton sludge solids (24 hr) was required to solubilize Cu (5%), Pb (32%), and Cd (66%), these being the most difficult metals to release from the sludge solids. Ethylenedinitrilo-tetraacetic acid showed higher removals than acid for Cu, Pb, and Cd, but an average of one metric ton ethylenedinitrilo-tetraacetic acid per metric ton dry sludge solids was required. Treatment of pregnant metal liquors with lime was effective in precipitating > 93% of the metals of interest; however, the quantities of metals recovered were inconsequential from an economic standpoint.</abstract><pub>Water Pollution Control Federation</pub><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0043-1303 |
| ispartof | Journal - Water Pollution Control Federation, 1981-01, Vol.53 (1), p.25-32 |
| issn | 0043-1303 |
| language | eng |
| recordid | cdi_jstor_primary_25041014 |
| source | Jstor Complete Legacy |
| subjects | Acid treatment Chemical precipitation Heavy metals Plant Operations Sewage sludge Sludge Sludge digestion Sludge treatment Solubilization Sulfuric acids |
| title | Metals Removal and Recovery from Municipal Sludge |
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