Detoxifying agent for use in disposal of noxious wastes that is conducted by solidifying them with cement
AssigneeWith Gala Co., Ltd.
InventorsToshiyuki Isobe, Kunio Sasada, Shuichi Sugihara
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Abstract
A detoxifying agent for use in disposal of noxious wastes that is conducted by solidifying them with cement, consisting essentially of an aqueous solution which comprises as main components (a) small-sized metal cations whose 6-coordination ionic radii are less than 100 pm, (b) medium-sized metal cations whose 6-coordination ionic radii are between 100 pm and 140 pm, and (c) large-sized metal cations whose 6-coordination ionic radii are in excess of 140 pm. This detoxifying agent can provide cement-solidified materials having high strength, substantially free from exudation of toxic substances such as heavy metals, PCBs and dioxins.
Claims17
A detoxifying agent for use in disposal of noxious wastes that is conducted by solidifying them with cement, consisting essentially of an aqueous solution which comprises as main components:
- (a) small-sized metal cations whose 6-coordination ionic radii are less than 100 pm, comprising alkaline-earth metal ions and 3d transition metal ions;
- (b) medium-sized metal cations whose 6-coordination ionic radii are between 100 pm and 140 pm, comprising alkali metal ions and alkaline-earth metal ions;
- and
- (c) large-sized metal cations whose 6-coordination ionic radii are in excess of 140 pm, comprising alkali metal ions and alkaline-earth metal ions;
- and
- wherein the detoxifying agent comprises substantially no tannin or wood vinegar.
Dependencies are inferred from the claim text.