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Main Title Control of Mercury Pollution in Sediments.
Author Harlin, J, Curtis C. ;
CORP Author Robert S. Kerr Water Research Center, Ada, Okla.
Year Published 1972
Report Number EPA-68-01-0087; EPA-16080-HTY; 02632,; R2-72-043
Stock Number PB-213 771
Additional Subjects ( Water pollution ; Mercury) ; ( Sediments ; Mercury) ; Water chemistry ; Materials recovery ; Particle size ; Roasting ; Leaching ; Hydrometallurgy ; Waste disposal ; Covering ; Metal scrap ; Iron ; Hypochlorites ; Mercury organic compounds ; Water pollution control ; Junk car disposal ; Mercury/methyl
Library Call Number Additional Info Location Last
NTIS  PB-213 771 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 61p
Abstract Methods are described for controlling pollution from mercury-laden sediment deposits on the bottom of streams and lakes. Five sediment samples containing from 6 ppm to 500 ppm mercury were investigated. A variety of methods for recovering the mercury values from dredged sediments were explored. Density fractionation, particle size fractionation, flotation, roasting and leaching were the methods studied. Roasting and chemical leaching afford the greatest promise for inexpensive removal and recovery of the mercury. The use of an iron overlay in the form of crushed automobile bodies topped with sand could be an inexpensive and effective method of isolating mercury-containing sediments from a water overlayer. An important attraction of using iron as an overlay is its ability to reduce methylmercury ions as well as mercuric ions to elemental mercury. (Author)
Highlights Notes Examines two control techniques: An overlay of crushed cars on polluted sediments, and extractive metallurgical methods to recovery mercury from dredged sediments.
PUB Date Free Form Sep 72,
Category Codes 13B; 8H; 68D; 64H
NTIS Prices PC A04/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326535593
Origin NTIS
Type CAT