Method for the elimination of arsenic-containing warfare agents

摘要

A process for the disposal of arsenic-containing warfare agents is provided, in which a) the arsenic-containing warfare agents are burnt under oxidising conditions; b) the exhaust gas under (a) is introduced into a fluidised bed; c) the arsenic content is there converted into stable arsenates by one or more substances selected from the group consisting of oxides, hydroxides, carbonates, sulphates, chlorides of iron, calcium, magnesium, aluminium or barium, and the arsenates are separated off from the gas stream and conducted away; d) the exhaust gas under (c) is scrubbed in an aqueous phase, the aqueous phase being acidic or alkaline; e) arsenic contents are precipitated from the aqueous phase under (d) by addition of one or more substances under (c); f) the solid is separated off and returned to the fluidised bed under (b); g) the solution separated off is neutralised and disposed of. IMAGE