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Oxidizing and reducing treatments of industrial hazardous wastes
Mineral Processing and Environmental Engineering Team, LEM, Associated to CNRS.
1999 (Engelska)Ingår i: Toxicological & Environmental Chemistry, ISSN 0277-2248, E-ISSN 1029-0486, Vol. 70, nr 3-4, s. 491-508Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Three samples generated by the non-ferrous metallurgy are subjected to thermal treatments between 200°C and 800°C in controlled oxidizing and reducing atmospheres. The objectives of these treatments are the elimination of toxic elements and the concentration of valuable metals in the treatments' residues. The treatments of these solids under oxidizing conditions at 700°C are well adapted for two samples. About 98% of toxic elements are eliminated and the totality of valuable elements is concentrated in the treatments' residues. The use of hydrogen at 600°C, permits the elimination of more than 96% of toxic elements and the recovery of up to 100% of valuable metals contained in the treated industrial wastes. The elimination rates of toxic elements (As, Hg, Cd, Se, ...) and the concentration rate of valuable metals (Pb, Zn, Cu) as well as the Global Decontamination Factor are reported.

Ort, förlag, år, upplaga, sidor
1999. Vol. 70, nr 3-4, s. 491-508
Nationell ämneskategori
Metallurgi och metalliska material
Forskningsämne
Processmetallurgi
Identifikatorer
URN: urn:nbn:se:ltu:diva-9314Lokalt ID: 7e931150-4c47-11de-afea-000ea68e967bOAI: oai:DiVA.org:ltu-9314DiVA, id: diva2:982252
Anmärkning
Godkänd; 1999; 20090529 (andbra)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

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