Screening and Thermal Desorption for Remediation of a Sediment Polluted by the Mercury of a Chlor-Alkaly Plant
作者： Andrea Manni , Paolo Massacci , Luigi Piga , Silvia Serranti
DOI: 10.1080/10588330490466003
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摘要: Thermal desorption tests were performed on samples taken from a mercury polluted sediment (133 mg/kg) in the vicinity of chlor-alkali plant that has been operating over long period using cathodes. After characterization sediment, by means TGA/DTA, SEM, XRD and chemical analysis, material was screened into various size-fractions. Chemical analysis showed only finest size-fractions had content above regulatory limit (5 established for areas destined industrial installations. applied size-sediment fractions at furnace temperatures between 300°C 400°C solids residence times 3 minutes 120 minutes. 400°C, treated residue below limit. The short solid time low temperature required to meet treatment standards would permit use continuous thermal process rotat...
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