Microbes are everywhere, but when they are in mined soils, they react with the mineral pyrite to speed up acidification of mine run-off water. Scientists have been trying to understand the chemistry behind this process that eventually leads to widespread acidification of water bodies and deposition of heavy metals. What a new study has found seems to defy the laws of chemistry: microbes react with the pyrite surface, coating it with chemicals that would be expected to hinder further reactions. Despite the formation of such coatings, however, microbe-mediated reactions occur tens of thousands of times faster than when no microbes are present.
Thats a puzzle, said Alfred Spormann, a co-principal investigator on the study. This changed surface chemistry should slow down the microbial oxidation but it doesnt.
The collaborative study was led by co-principal investigators Scott Fendorf, Gordon Brown and Spormann at Stanford. Dartmouth Assistant Professor Benjamin Bostick, Fendorfs former doctoral student who coordinated the research effort, will present the groups findings Thursday, Dec. 11 at this years San Francisco meeting of the American Geophysical Union (AGU). The AGU is an international scientific society with more than 35,000 members dedicated to advancing the understanding of Earth and its environment.
Czerne M. Reid | EurekAlert!
Dead cells disrupt how immune cells respond to wounds and patrol for infection
21.05.2019 | University of Sheffield
New study shows: Tropical corals reflect ocean acidification
21.05.2019 | Leibniz-Zentrum für Marine Tropenforschung (ZMT)
Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...
With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.
Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...
'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.
However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...
Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future
When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...
Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells
The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...
29.04.2019 | Event News
17.04.2019 | Event News
15.04.2019 | Event News
22.05.2019 | Power and Electrical Engineering
21.05.2019 | Materials Sciences
21.05.2019 | Materials Sciences