Leaching column method for predicting effluent quality from surface mines
Conference
·
· Univ. Ky., Off. Eng. Serv., (Bull.); (United States)
OSTI ID:5473864
A leaching column technique that produces effluent similar in quality to coal mine drainage in the Eastern Interior Basin has been developed. The columns are charged with 1000 grams of crushed overburden and cycled through the leaching process once a week for twelve weeks. Relationships among the important chemical constituents are very similar to those present in actual mine drainage waters, but the overall concentrations of ions are more dilute in the leachates. Multiplying the leachate concentrations by a factor of 4.5 gives values similar to mine waters. Available data suggests that each of the leaching cycles represents about three years of natural weathering, so that the leaching technique can predict the evolution of the mine drainage water over a time span of about 36 years. Use of the leaching technique with drill core samples should provide a method of approximating mine drainage quality in advance of mining and should be quite useful in identifying potentially toxic units in the overburden. However, the results should be considered to be a worst case situation, because the technique does not consider the effects of reclamation.
- Research Organization:
- Amoco Production Co., Houston, TX
- OSTI ID:
- 5473864
- Report Number(s):
- CONF-841204-
- Conference Information:
- Journal Name: Univ. Ky., Off. Eng. Serv., (Bull.); (United States)
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
520100 -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
COAL MINING
DATA
DISPERSIONS
DISSOLUTION
ENVIRONMENTAL IMPACTS
EXPERIMENTAL DATA
FORECASTING
INFORMATION
LEACHATES
LEACHING
MATERIALS
MATERIALS TESTING
MINING
MIXTURES
NUMERICAL DATA
OVERBURDEN
POLLUTION
SEPARATION PROCESSES
SOLUTIONS
SURFACE MINING
TESTING
TOXIC MATERIALS
WATER POLLUTION
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
520100 -- Environment
Aquatic-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
COAL MINING
DATA
DISPERSIONS
DISSOLUTION
ENVIRONMENTAL IMPACTS
EXPERIMENTAL DATA
FORECASTING
INFORMATION
LEACHATES
LEACHING
MATERIALS
MATERIALS TESTING
MINING
MIXTURES
NUMERICAL DATA
OVERBURDEN
POLLUTION
SEPARATION PROCESSES
SOLUTIONS
SURFACE MINING
TESTING
TOXIC MATERIALS
WATER POLLUTION