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Characterization and recovery of mercury from electrical manufacturing wastes by thermal desorption.

Authors
Dewing-HH; Schluter-RB
Source
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, RI 9513, 1994 Jan; :1-9
Link
NIOSHTIC No.
10012434
Abstract
The U.S. Bureau of Mines characterized mercury containing wastes and used a thermal-desorption process to remove and recover the contained mercury (Hg). The wastes were generated by an electrical-parts plant engaged in the assembly of Hg-containing switches and contained phenolic resins and paper insulating materials mixed with soil. The average Hg content was 396 ppm. Numerous characterization tests showed the Hg was tightly absorbed and could not be removed or concentrated by leaching or gravity separation techniques. Mercury recovery was over 99.99 pct of the desorbed Hg. Thermal-desorption processes have had wide application to many Hg-containing wastes, and historical experience in Hg mining has demonstrated the potential cost effectiveness.
Keywords
Waste-processing; Hazardous-materials; Metal-recycling; Electric-devices; Electric-equipment; Soil-pollution; Separation-processes; Technology-utilization; Mercury-Metal; Thermal-recovery-methods; Desorption; Thermal-desorption
Publication Date
19940101
Document Type
Report of Investigations
Fiscal Year
1994
NTIS Accession No.
PB95-111712
NTIS Price
A03
Identifying No.
RI-9513
NIOSH Division
RORC
Source Name
Rolla, MO: U.S. Department of the Interior, Bureau of Mines, RI 9513
State
MO
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