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RECORD NUMBER: 297 OF 846

OLS Field Name OLS Field Data
Main Title Effect of Aeration of Sediment on Cadmium Binding.
Author Zhuang, Y. ; Allen, H. E. ; Fu, G. ;
CORP Author Delaware Univ., Newark. Environmental Engineering Program.;Environmental Protection Agency, Washington, DC. Office of Research and Development.
Publisher c1994
Year Published 1994
Report Number EPA-R-819537-01-0; EPA/600/J-94/471;
Stock Number PB95-137337
Additional Subjects Sediments ; Cadmium ; Aeration ; Reprints ; Acidification ; Pyrite ; Aerobic processes ; Sulfide minerals ; Toxic substances ; Water pollution sampling ; Concentration(Composition) ; Solubility ; AVS(Acid volatile sulfide) ; Acid volatile sulfide
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB95-137337 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/06/1995
Collation 10p
Abstract
A series of lab aeration experiments was conducted in batch reactors to investigate the effects of aeration of sediment on the sulfide content of sediment and on the partitioning of cadmium, a model toxic metal, to the sediment. Aeration of sediment results in rapid decrease of the AVS. We studied the sediment characteristics for aeration periods of approximately a month. During this time, the concentrations of dissolved metals increased by 200 to 400% or more, relative to the concentrations present at the beginning of the test. The concentrations of metals associated with AVS and with pyrite become increasingly more important in the binding of cadmium. Following the aeration, more than 50% of the cadmium was associated with the extractable iron and manganese components of the sediment. Overall, the binding capacity of the sediments for cadmium decreased after aeration.