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Development of rapid, cost effective laboratory tests for use in identifying potential water quality problems and quantifying control measures necessary to prevent them.

Evangelou-VP; Wells-KL; Sajwan-KS; Sainju-UM; Creech-B

Washington, DC: U.S. Department of the Interior, Bureau of Mines, OFR 70-92, 1990 Jan; :1-216

10011247

This investigation was aimed at development of laboratory techniques for use in acid pyritic-coal spoils for the purpose of identifying potential water quality problems and potential solutions to these problems. The laboratory tests or techniques involved include solution and surface characterization, FT-IR spectroscopy, automanometry, surface reactions with manganese, and treatment effectiveness in controlling acid production. These treatments include carbonates, phosphates, and organic mulches. A number of solution and surface characterization techniques were tested employing as extractants NH4Cl, NH4OAc, BaCl2 triethanolamine (TEA), and H2SO4+HCl. It is demonstrated that, based on the saturation extract test, spoils vary widely in their potential to introduce acidity and salts to runoff. This potential is not related to the potential acidity present (pyrite); rather, it is related to the age of the spoil and degree of oxidative conditions in the field. Spoils, based on the saturation extract test, appear to vary fron nonsaline to very saline.

Water pollution control; Water quality; Coal mine spoils; Water pollution abatement; Surface chemistry; Fourier spectrometers; Infrared spectroscopy; Acidification; Manganese; Acid mine drainage; Organic matter; Sewage sludge; Abandoned sites; Neutralization; Experimental design; Physical properties; Chemical properties; Carbonates; Phosphates; Chemical treatment

19900101

CP

1990

PB92-177195

A11

OFR 70-92

WO

Washington, DC: U.S. Department of the Interior, Bureau of Mines, OFR 70-92

DC