As part of the course requirements for FOR 797-2,
students share the responsibility for reporting on the speakers in the
Women in Scientific and Environmental Professions Speaker Series. The following press release was prepared
by Yvonne Paul and April Baptiste.
Dr. Caryl Fish, Professor of Environmental Chemistry at Saint Vincent College, discussed Abandoned Mine Drainage: A Resource for Undergraduate Education at
ESF on February 22, 2005 as part of SUNY ESF’s Women in Scientific and
Environmental Professions Speaker Series.
Dr. Fish’s presentation focused on the clean-up of abandoned
mine drainage sites in Pennsylvania.
During the 1800s and early 1900s, there were a number of coal mines in
operation in Pennsylvania. During active mining, water would be pumped
from the mines to facilitate the process.
After the mines were depleted, pumping would cease and the excavated
areas would fill with water. Groundwater chemically reacts with the mineral
pyrite (iron sulphide – FeS2) that is commonly found along the seams
of coal. The iron and sulphur in the
pyrite dissolve in the water to create iron hydroxide and sulphuric acid. As
the iron and sulphur-rich groundwater reaches the surface through drill holes
and other openings, the iron in the water reacts with air and essentially
“rusts.” When the water drains into nearby rivers and streams, these water
bodies are “stained” orange as iron-rich compounds oxidize and settle. This drainage can be quite acidic, unless
there is sufficient calcium carbonate in the groundwater to neutralize it. The iron-rich compounds and other chemicals
in the water decreased the flora and fauna that would naturally inhabit these
waters.
The Monastery Run Project near Saint Vincent College
began in 1993 to test passive treatment for mine drainage. Three multi-celled wetland ponds or cells
were created to reduce the iron that was prevalent in the local streams. Water moves from one cell to the next,
reducing the concentration of iron dramatically between cells. The first cell is aerated via the movement of
falling water to maximize precipitation of iron compounds. The last cells
contain cattails, which act as physical filters, trapping free iron
molecules. The wetlands in this project
area can retain 250 pounds of iron oxide per day. Less than 1% of the iron that entered the
wetlands leaves. This passive method is
now a common means to improve water quality from AMD. In addition, the wetlands are used to enhance
science learning for chemistry and non-chemistry students, assist teacher
education for grades K-9, provide general wetland education for the public, and
serve as the basis for teacher education and senior research projects.
Dr. Fish is a Professor of Chemistry at Saint Vincent College
in Latrobe, PA.
She is also the director of St. Vincent's Summer Institute in Watershed
Restoration and its Environmental
Education Center. Dr. Fish earned her B.S. from Manchester College,
MBA at the University
of Dayton, and PhD from
SUNY-ESF.