FIXATION TREATMENT METHOD OF HEAVY METAL, TREATMENT AGENT USED THEREFOR, AND METHOD OF MANUFACTURING THE SAME

Title:

FIXATION TREATMENT METHOD OF HEAVY METAL, TREATMENT AGENT USED THEREFOR, AND METHOD OF MANUFACTURING THE SAME

Document Type and Number:

Japanese Patent JP2010167344

Kind Code:

A

Abstract:

To solve the problem that sodium diethyldithiocarbamate aqueous solution to be used as a heavy metal fixation treatment agent can not be used safely since it is easily decomposed and generates not only harmful carbon disulfide but also strongly combustible and stimulative diethylamine gas.

Solid sodium diethyldithiocarbamate hydrate is excellent in transportability and preservation stability compared to anhydride or aqueous solution, and by mixing it in a heavy metal containing material together with water, the fixation treatment of the heavy metal is performed without generating the harmful carbon disulfide and the strongly combustible and stimulative diethylamine gas. As the sodium diethyldithiocarbamate hydrate, sodium diethyldithiocarbamate trihydrate is preferable.

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Inventors:

AYAMA YOSHINORI
HIKITA HIDEKI
NAGAMINE TOSHITAKA
YOSHIMITSU MITSUAKI

Application Number:

JP2009010701A

Publication Date:

August 05, 2010

Filing Date:

January 21, 2009

Export Citation:

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Assignee:

TOSOH CORP

International Classes:

B09B3/00; A62D3/33; B09C1/02; B09C1/08; C02F1/62; C02F11/00; C09K3/00; A62D101/43

Domestic Patent References:

JPS5941500A	1984-03-07
JPH1077261A	1998-03-24
JPH11114528A	1999-04-27
JP2003336035A	2003-11-28
JP4180840B2	2008-11-12
JP3895018B2	2007-03-22
JP2003301165A	2003-10-21
JP2005052688A	2005-03-03

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