Clean process to destroy arsenic-containing organic compounds with recovery of arsenic

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870560

Upadhye, Ravindra S ^[1]; Wang, Francis T ^[2]

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1. Pleasanton, CA
2. Danville, CA

A reduction method is provided for the treatment of arsenic-containing organic compounds with simultaneous recovery of pure arsenic. Arsenic-containing organic compounds include pesticides, herbicides, and chemical warfare agents such as Lewisite. The arsenic-containing compound is decomposed using a reducing agent. Arsine gas may be formed directly by using a hydrogen-rich reducing agent, or a metal arsenide may be formed using a pure metal reducing agent. In the latter case, the arsenide is reacted with an acid to form arsine gas. In either case, the arsine gas is then reduced to elemental arsenic.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5545800
• OSTI ID: 870560
• Country of Publication: United States
• Language: English

Related Subjects

clean
process
destroy
arsenic-containing
organic
compounds
recovery
arsenic
reduction
method
provided
treatment
simultaneous
pure
pesticides
herbicides
chemical
warfare
agents
lewisite
compound
decomposed
reducing
agent
arsine
gas
formed
directly
hydrogen-rich
metal
arsenide
latter
reacted
acid
form
reduced
elemental
simultaneous recovery
containing compound
formed directly
containing organic
organic compound
organic compounds
reducing agent
reduction method
warfare agent
arsenic-containing organic
chemical warfare
pure metal
/588/75/423/