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Inhibition of acid mine drainage formation: the role of insoluble iron compounds.

Authors
Nebgen-JW; Engelmann-WH; Weatherman-DF
Source
J Environ Sci 1981 May-Jun; 24(3):23-27
Link
NIOSHTIC No.
10002096
Abstract
Findings and conclusions from a 2-year study concerning chemical agents for the inhibition of acid mine drainage (AMD) formation are reported. Three materials containing pyrite were evaluated in detail, but only one was a strong producer of AMD. Analysis of the experimental results strongly suggests that the rate at which pyrite is oxidized can be lowered substantially if the iron products from pyrite oxidation are kept insoluble. Analysis of the data does not distinguish between the following mechanisms: the lack of availability of soluble ferric ion as an oxidant or the exclusion of air by a ferric hydroxide coating. Either mechanism is compatible with the experimental data. Thus, methods to keep aqueous ferric ion minimized, e.g., through insolubilization or maintaining high Fe/sup + +//Fe/sup + + +/ ratios, appear to be important in the chemical inhibition of AMD formation.
CODEN
JEVSAG
Publication Date
19810501
Document Type
OP; Journal Article
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
OP 35-81
Issue of Publication
3
ISSN
0022-0906
NIOSH Division
TCRC
Source Name
The Journal of Environmental Sciences
State
MN
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