HOME >> BIOLOGY >> NEWS
Study Of Microbes May Hone Predictions Of Mining Impact

By tracing the abundance and distribution of bacteria in an abandoned California mine, scientists may have found a better way to predict the potential environmental consequences of mining metal ores.

Writing this week (March 6) in the journal Science, a team of University of Wisconsin-Madison scientists presents the first in situ, molecular-level ecological study of the naturally occurring microbes that mediate some of the most severe pollution events associated with sulfide mining. The findings could provide the mining industry and others with a new predictive technology, one capable of estimating acid mine drainage from a given site.

Acid mine drainage is the flow of sulfuric acid into ground and surface water from metallic-ore mines. In addition to contributing sulfuric acid to nearby water supplies, the sulfuric acid itself facilitates the release and suspension of heavy metals into water, one of the most vexing consequences of sulfide mining.

In nature, minerals exposed to oxygen and water form sulfuric acid. Around mines, an abundance of minerals is exposed to the surface in tailings and the exposed surfaces of ore bodies, and they oxidize naturally. But contributing to the process are naturally-occurring bacteria which, like tiny factories, greatly accelerate the rate of oxidation. The bacteria are widely considered to be the microorganisms that control the production rate of acid mine drainage.

Knowing precisely where and under what conditions the microbes thrive in nature can be a powerful new tool to predict the effects of sulfide mining at a given site, said Katrina J. Edwards, a UW-Madison graduate student and a co-author of the study.

Prior to the new study, conducted at Iron Mountain, Calif., an abandoned and heavily polluted iron mine, two species of bacteria, Thiobacillus ferrooxidans and Leptospirillum ferrooxidans, were believed to be the primary microbial culprits involved in accelerating acid mine drainage.

But r
'"/>

Contact: Katrina J. Edwards
katrina@geology.wisc.edu
608-262-0915
University of Wisconsin-Madison
5-Mar-1998


Page: 1 2 3

Related biology news :

1. Study: Emission of smog ingredients from trees is increasing rapidly
2. Study explores gene transfer to modify underlying course of Alzheimers disease
3. Study reveals why eyes in some paintings seem to follow viewers
4. Study by Israeli scientists provides insight on DNA code
5. Study reveals first genetic step necessary for prostate cancer growth
6. Study of flu patients reveals virus outsmarting key drug
7. Study in Science reveals recreational fishing takes big bite of ocean catch
8. Study suggests cell-cycle triggers might be cancer drug targets
9. Study narrows search for genes placing men at increased risk for prostate cancer
10. Study links high carbohydrate diet to increased breast cancer risk
11. Study explains spatial orientation differences between sexes

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/22/2016)... American College of Medical Genetics and Genomics was once again ... of the fastest-growing trade shows during the Fastest 50 Awards ... Las Vegas . Winners are ... of the following categories: net square feet of paid exhibit ... 2015 ACMG Annual Meeting was ranked 23 out of 50 ...
(Date:6/22/2016)... 2016 On Monday, the Department of Homeland ... share solutions for the Biometric Exit Program. The Request ... Protection (CBP), explains that CBP intends to add biometrics ... the United States , in order to deter ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
(Date:6/20/2016)... 20, 2016 Securus Technologies, a leading ... for public safety, investigation, corrections and monitoring announced ... it has secured the final acceptance by all ... Managed Access Systems (MAS) installed. Furthermore, Securus will ... be installed by October, 2016. MAS distinguishes between ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... 7, 2016 /PRNewswire/ - OncoQuest Inc. ("OncoQuest"), a ... of immunotherapeutic products for the treatment of cancer, ... Antibody Manufacturing Development Program with Cytovance Biologics ( ... its oregovomab antibody product. Supported by recent positive ... study in ovarian cancer patients, OncoQuest has engaged ...
(Date:12/7/2016)...  Vyriad Inc. announced today the appointment of ... Directors. "We are delighted to welcome Al ... develop our oncolytic viruses as the next generation of ... , MD, PhD, CEO of Vyriad. "Al and his ... passion for making a difference for cancer patients—their philanthropy ...
(Date:12/7/2016)... (PRWEB) , ... December 07, 2016 , ... ... treatment and resource recovery solutions for industrial facilities, today announced that one of ... the first to use Cambrian’s novel water-energy purchase agreement (WEPA). Under the WEPA, ...
(Date:12/6/2016)... Dec. 6, 2016 The American Botanical Council ... of arnica ( Arnica montana ) through ABC,s ... HerbMedPro database, a comprehensive, interactive online ... clinical research data on the uses and health ... Naturopathica, a wellness company with healing arts ...
Breaking Biology Technology:
Cached News: