Neutralization of an acidic surface mine lake using organic additives. Final research report, 1 July 1991-1 October 1993
We added 9.1 metric tons of manure to a pH 2.9 acid coal mine lake in Southern Illinois to test whether the added organic matter would support sulfate and iron reduction by anaerobic bacteria resulting in the production of alkalinity and a rise in pH. The added organic matter did cause a rise in pH in the deep water of the lake, but the effect did not increase the pH of the whole lake. Experiments in laboratory microcosms at 23 C show that lake sediment treated with manure can permanently raise the pH of acid mine drainage. In the open lake diffusion of oxygen into the anaerobic zones of the water column and low water temperatures in the winter limited the effects of sulfate and iron reduction to the deep water of the lake during summer thermal stratification.
- Research Organization:
- Southern Illinois Univ., Edwardsville, IL (United States). Dept. of Biological Sciences
- OSTI ID:
- 56419
- Report Number(s):
- PB--95-194288/XAB; CNN: Contract J0319003
- Country of Publication:
- United States
- Language:
- English
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