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dc.contributor.authorCoward, Nathan A.
dc.contributor.authorHorton, Joseph W.
dc.date.accessioned2022-02-15T18:50:12Z
dc.date.available2022-02-15T18:50:12Z
dc.date.issued1981-11-17
dc.identifier.urihttp://digital.library.wisc.edu/1793/82729
dc.description.abstractThe aqueous leaching of heavy metals from soft coal has been examined under a variety of conditions. Variables examined were pH, particle size, rate of flow, time of contact and oxygen or nitrogen atmosphere. Simple leaching of coal from Western mines with pure water does not remove large amounts of metal. Metal removed was in most cases about 0.1% to 0.5% of the total metal in the coal. Extended, successive leaches (of about one week duration) and leaches in a mildly acid (acetic acid-acetate buffer; pH%4.7) tended to remove larger amounts of some metals. Leaching with a strong com­plexing agent removes relatively larger amounts of metal. When placed in contact with water previously spiked with metal ions, the coal actually re­ duces the aqueous concentration of many metal ions. Continuous flow and simple shaker experiments correlate qualitatively with each other. Considerable variation was found between Eastern and Western coal and also between different samples of Western coal.en_US
dc.description.sponsorshipUS EPAen_US
dc.language.isoen_USen_US
dc.subjectstatic coal storageen_US
dc.subjectaquatic environmenten_US
dc.subjectleachingen_US
dc.subjectheavy metalsen_US
dc.titleStatic Coal Storage - Chemical Effects on the Aquatic Environmenten_US
dc.typeTechnical Reporten_US


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