Physicochemical principles of the decontamination and utilization of arsenic-containing waste

Authors
Dergacheva, NP Vasil'ev, VS Toptygina, GM Evdokimov, VI Kochetkova, NV Krenev, VA
Citation
Np. Dergacheva et al., Physicochemical principles of the decontamination and utilization of arsenic-containing waste, INORG MATER, 36(11), 2000, pp. 1178-1182
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
INORGANIC MATERIALS
ISSN journal
00201685 → ACNP
Volume
36
Issue
11
Year of publication
2000
Pages
1178 - 1182
Database
ISI
SICI code
0020-1685(200011)36:11<1178:PPOTDA>2.0.ZU;2-7
Abstract
Thermodynamic computer simulation of heterogeneous multicomponent systems c ontaining arsenic(III), arsenic(V), and calcium chlorides, hydrochloric aci d, nitric acid, hydrogen peroxide, and oxygen is carried out for temperatur es of 25-100 degreesC. The solute state of arsenic is found to influence th e fugacities of arsenic trichloride and hydrogen chloride. Arsenic(III) oxi dation in chloride solutions and distillation of arsenic-containing solutio ns in the presence of oxidants are studied experimentally to determine cond itions for a rapid and virtually complete oxidation of arsenic in chloride solutions by nitric acid, ammonium nitrate, and hydrogen peroxide.