Much of the naturally occurring radioactivity in hydraulic fracturing wastewater might be removed by blending it with wastewater from acid mine drainage, according to a Duke University-led study. Hear more in this Discovery Files podcast.
Credit: NSF/Karson Productions
Oil spills do untold damage to the environment--to the waters they pollute and to marine and other wildlife. Pelagia-Irene (Perena) Gouma, a professor at the State University of New York (SUNY) Stony Brook, created a novel "nanogrid," a large net consisting of metal grids made of a copper tungsten oxide, that, when activated by sunlight, can break down oil from a spill, leaving only biodegradable compounds behind. Initially, the grids, which resemble non-woven mats of miniaturized ceramic fishing nets, probably will be used for oil spills, although they potentially could prove valuable in other applications, such as cleaning contaminated water produced by hydraulic fracturing. Find out more in this discovery.
Credit: Perena Gouma, CNSD, SUNY Stony Brook
The Division of Chemical, Bioengineering, Environmental and Transport (CBET) Systems of the Directorate for Engineering supports research and education in the rapidly evolving fields of bioengineering and environmental engineering and in areas that involve the transformation and/or transport of matter and energy by chemical, thermal or mechanical means.
Rising supplies of natural gas could benefit the environment by replacing coal as a fuel for electricity, but hydraulic fracturing poses dangers for people living near the wells, a 2014 Stanford-led analysis found.
April 20, 2015
Hydraulic fracturing: Using scientific methods to evaluate trade-offs
Engineers gather data for more informed decisions about the benefits versus costs of oil and natural gas development
In Colorado, drilling for oil and natural gas using hydraulic fracturing, sometimes referred to as fracking, is big business. But, questions about its impact on the air and water are far from settled.
With support from the National Science Foundation (NSF), University of Colorado environmental engineer Joseph Ryan heads a team gathering data on the pros and cons of oil and natural gas development, including the use of hydraulic fracturing. The broad research goals of the team include exploring potential impacts on water and air quality, human health and energy sustainability. For example, the researchers are investigating how long hydraulic fracturing chemicals persist should the chemicals make their way into the groundwater. And, team members are working with local residents to gather air quality data on carbon dioxide, carbon monoxide, volatile organic compounds, ozone and nitrogen dioxide.
A mobile laboratory is used to record levels of methane gas, a greenhouse gas that can come from a variety of sources including oil and natural gas extraction. The team is also looking at the benefits of oil and natural gas development so regulators, policymakers and the general public can see the complete picture before forming opinions or making decisions. The outreach and education components of the research will focus on citizen science, public involvement, and awareness of the science and policy issues.
The research in this episode was supported by NSF award #1240584, Routes to Sustainability for Natural Gas Development and Water and Air Resources in the Rocky Mountain Region.
Any opinions, findings, conclusions or recommendations presented in this material are only those of the presenter grantee/researcher, author, or agency employee; and do not necessarily reflect the views of the National Science Foundation.