Oxidation of arsenic bearing fly ash as pretreatment before solidification

When a waste fly ash, containing large amounts of As 2O 3, is solidified using cement and lime, the arsenic concentration in the leachate (extraction test DIN 38 414 S4) is determined by the solubility of CaHAsO 3 and can be lowered to a value of ca. 5 mg/l, in a saturated solution of Ca(OH) 2. One...

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Veröffentlicht in:	Journal of hazardous materials 1999-09, Vol.68 (3), p.205-215
Hauptverfasser:	Dutré, Veronika, Vandecasteele, Carlo, Opdenakker, Stefan
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Applied sciences Arsenates - chemistry Arsenic - chemistry Calcium Compounds - chemistry Carbon - chemistry Coal Ash Exact sciences and technology Hydrogen-Ion Concentration Immobilisation of arsenic Industrial Waste - analysis Inorganic solidification/stabilisation MINTEQA2 Other industrial wastes. Sewage sludge Oxidation of As(III) to As(V) Oxidation-Reduction Particulate Matter Pollution Software Solid waste Solubility Wastes
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