TY - JOUR
T1 - Injection of fluidized bed combustion ash into mine workings for treatment of acid mine drainage
AU - Canty, G. A.
AU - Everett, J. W.
N1 - Funding Information:
The authors thank the Oklahoma Conservation Commission Water Quality Program and the Abandoned Mine Land Program for the expertise and practical knowledge that they provided. The authors are also indebted to the U.S. Environmental Protection Agency for financially supporting the project through a Clean Water Act §319 grant.
PY - 2006/3
Y1 - 2006/3
N2 - A demonstration project was conducted to investigate treating acid mine water by alkaline injection technology (AIT). A total of 379 t of alkaline coal combustion byproduct was injected into in an eastern Oklahoma drift coal mine. AIT increased the pH and alkalinity, and reduced acidity and metal loading. Although large improvements in water quality were only observed for 15 months before the effluent water chemistry appeared to approach pre-injection conditions, a review of the data four years after injection identified statistically significant changes in the mine discharge compared to pre-injection conditions. Decreases in acidity (23%), iron (18%), and aluminum (47%) were observed, while an increase in pH (0.35 units) was noted. Presumably, the mine environment reached quasi-equilibrium with the alkalinity introduced to the system.
AB - A demonstration project was conducted to investigate treating acid mine water by alkaline injection technology (AIT). A total of 379 t of alkaline coal combustion byproduct was injected into in an eastern Oklahoma drift coal mine. AIT increased the pH and alkalinity, and reduced acidity and metal loading. Although large improvements in water quality were only observed for 15 months before the effluent water chemistry appeared to approach pre-injection conditions, a review of the data four years after injection identified statistically significant changes in the mine discharge compared to pre-injection conditions. Decreases in acidity (23%), iron (18%), and aluminum (47%) were observed, while an increase in pH (0.35 units) was noted. Presumably, the mine environment reached quasi-equilibrium with the alkalinity introduced to the system.
UR - http://www.scopus.com/inward/record.url?scp=33746456252&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746456252&partnerID=8YFLogxK
U2 - 10.1007/s10230-006-0107-5
DO - 10.1007/s10230-006-0107-5
M3 - Article
AN - SCOPUS:33746456252
SN - 1025-9112
VL - 25
SP - 45
EP - 55
JO - Mine Water and the Environment
JF - Mine Water and the Environment
IS - 1
ER -