Research Inquiries

For inquiries related to SD Mines Research, contact:

Research Affairs

S.D. School of Mines & Technology
501 E. St. Joseph Street
Suite 102, O'Harra Building
Rapid City, SD  57701

(605) 394-2493

Research@Mines - by Subject
Civil and Environmental Engineering

Powerful Bugs: Harnessing the Electric Eels of the Microbial World

“We’re studying the electric eels of the microbial world,” says Navanietha Krishnaraj, Ph.D., a research scientist in the Chemical and Biological Engineering department at SD Mines. - Photo Credit NOAA

Researchers at the South Dakota School of Mines & Technology are studying ways to harness electricity generated by a unique set of microbes. 

“We’re studying the electric eels of the microbial world,” says Navanietha Krishnaraj, Ph.D., a research scientist in the Chemical and Biological Engineering department at SD Mines.

Researchers, such as Venkata Gadhamshetty, Ph.D., an associate professor in the Civil and Environmental Engineering department at SD Mines, and his team including Namita Shrestha, Ph.D., are working on maximizing the efficiency of what’s known as bioelectrochemical systems. By understanding the right combination of microbes and materials it’s possible to harness clean energy for widespread use in various applications.

Possible outcomes of this research include new ways to generate electricity and treat solid waste during NASA space missions, the ability for a wastewater treatment plants to help generate electricity while turning effluent into clean water, a new way to clean saline wastewater generated in oil drilling operations, and better ways to turn food waste, like tomatoes and corn stover into elec...

Last Edited 8/30/2018 01:53:43 PM [Comments (0)]

SD Mines Researchers Trace Pollution from Historic Northern Hills Mine Tailings Hundreds of Miles Downstream

Students taking part in research on this project include Bryce Pfiefle, the lead author of this paper, who graduated from SD Mines with a master’s degree in geological engineering.

The Black Hills of South Dakota was once home to the largest underground gold mine in North America – the Homestake Mine. Following its closure in 2002, the mine was turned into the Sanford Underground Research Facility. But, newly published research shows evidence of the past mining activities can still be found hundreds of miles downstream.

The history of gold mining in the northern Black Hills dates back about 130 years. During the first to middle part of the 20th century, about 100-million tons of mine tailings went down Whitewood Creek and into the Belle Fourche, Cheyenne and Missouri rivers. Research by a group of scientists, including James Stone, Ph.D., a professor of Civil and Environmental Engineering at the South Dakota School of Mines & Technology, along with others at the USGS Dakota Water Science Center show elevated levels of arsenic and other contaminants in these historic mine tailings.  

“The concentrations in the pore waters and sediments were quite high for arsenic in some sampling sites,” says Stone. 

In the 1980s, mine tailings along Whitewood Creek, found to contain arsenic, mercury and other pollutants, became an Read Full Article

Last Edited 7/20/2018 01:54:58 PM [Comments (0)]

SD Mines Researchers Pioneer New Testing Method That Identifies Pathogenic Potential in South Dakota Waterways

The project included over 1000 DNA extractions from bacteria in water samples taken out of Rapid Creek and the Big Sioux River over a two-year period.

Researchers at the South Dakota School of Mines & Technology have completed a groundbreaking study on harmful bacteria found in two important South Dakota waterways. The research, undertaken by Ph.D. candidate Kelsey Murray, found genes related to harmful E. coli in parts of the Big Sioux River and Rapid Creek.  

Public health officials often test streams and rivers for fecal coliform bacteria or E. coli, as this group of bacteria can be an indicator of pollution from animal or human waste. But, not all forms of E. coli are dangerous to humans; in-fact most are harmless. This study pioneered new testing methods that more accurately assess the public health risk from fecal contaminated waters by singling out and testing for genes associated with harmful forms of E. coli, including Shiga-toxigenic E. coli (STEC). 

Murray’s research, performed under Linda DeVeaux, Ph.D., and Lisa Kunza, Ph.D., is titled “Path-STREAM: Development and Implementation of a Novel Method for Determining Potential Risk from Pathogenic Bacteria in Surface Water Environments” Path-STREAM stands for Pathogenicity Profiling: Shiga Toxins and Related E. coli Attributes identification Method.

The project included over 1000 DNA extractions from bacteria in water samples taken out of Rapid Creek and the Big Sioux River over a two-year period. The effort built a method to identify the pathogenic genes associated with STEC and other...

Last Edited 8/24/2018 03:49:36 PM [Comments (0)]

$1.5 Million NSF Grant Brings Native Students into STEM Fields at Three South Dakota Schools

South Dakota School of Mines student Bo Paulsen holds the stake, while Oglala Lakota College student Wilson King wields the sledge hammer under the supervision of OLC instructor Lyle Wilson. In the background are Mines students Lyndsey Penfield and Logan Gayton. They are part of a team of students who designed and built a greenhouse in Kyle, which was part of effort to increase local food production on the Pine Ridge Reservation.

Three schools in South Dakota are teaming up in a continued effort to encourage more Native American students to enter the fields of Science, Technology, Engineering and Math (STEM). Oglala Lakota College, South Dakota School of Mines & Technology and the South Dakota State University were each awarded $495,000 grants from the National Science Foundation to evaluate the ongoing program and move the effort forward. The project, OLC, SDSU and SD Mines Pre-Engineering Education Collaborative (OSSPEEC), includes faculty, students, scientists and engineers working to solve real-world problems on the Pine Ridge Reservation.

The collaborative includes work to help Native students at OLC enter pre-engineering programs and then finish their degrees at South Dakota School of Mines or South Dakota State. The project also provides professional development for college educators to help boost the number of Lakota students who enter pre-engineering classes.

Jason Tinant is the OSSPEEC principal investigator at Oglala Lakota College where he is also an environmental science instructor. “Engineering is the application of science for the betterment of the community,” says Tinant. “This kind of engineering education can increase tribal sovereignty over water, food and language. This project embodies the Lakota ideals of “wolakociypai,” (learning the ways of the Lakota for the community) and “tiospaye” (the making of new relations),” he adds.  

T...
Last Edited 6/8/2017 10:43:03 AM [Comments (0)]

Turning Tomatoes Into Electricity

Dr. Venkata Gadhamshetty discusses research to turn tomato waste into energy resource.

When a South Dakota Mines research team announced in March that it had successfully generated power with tomato waste, the world and international media elite immediately took notice. After all, it’s not every day that you hear about fruit being converted into electricity.

The research group led by Dr. Venkata Gadhamshetty, Mines graduate students and a researcher each from Princeton University and Florida Gulf Coast University announced findings at the 251st National Meeting & Exposition of the American Chemical Society (ACS) in San Diego

Within hours, Dr. Gadhamshetty was interviewing with the BBC, and the news was written about by CNN, Newsweek, MSN, Yahoo news and the Times of India (to name a few), highlighting just one example of the important, world-changing research being conducted at the South Dakota School of Mines & Technology in Rapid City.

The pilot project involves a biological-based fuel cell that uses tomato waste from harvests, grocery store shelves and production plants such as ketchup factories. The inherent characteristics of the decomposing leftovers make it a perfect fuel source for enhancing electrochemical reactions, Dr. Gadhamshetty says.

Researchers designed and built a new electrochemical device to test and extract electrons from the defective tomatoes. The power output from their mini reactor is small: 10 milligrams of tomato waste resulted in 0.3 watts of electr...

Last Edited 11/3/2016 02:40:14 PM [Comments (0)]