JUN 22, 2022 12:00 PM PDT

Adding Metal to Microbes: Saving the Environment with Copper

WRITTEN BY: Hannah Daniel

Introducing a little extra copper to wetlands might drastically reduce greenhouse gas emitted from microbes.

A study from the Washington University in St. Louis found that copper is an essential metal in metabolizing nitrate into nitrous oxide, a common greenhouse gas. Led by Neha Sharma, a Ph.D. student in Professor of Environmental Engineering at the McKelvey School of Engineering Daniel Giammar’s lab, the research team studied microbes taken from their wetland environments to determine the necessary metals for microbe digestion. The results were published on June 15 in the journal Geochimica et Cosmochimica Acta.

A microbe is a type of microorganism that can be categorized into five types: viruses, bacteria, archaea, fungi, and protists. Microbes need trace amounts of metal to process the food they take in, just like humans. They turn the nitrate in their food into nitrogen through a process called denitrification. This process gives the microbes energy and produces a clean gas that makes up 78% of the atmosphere.

However, without the proper metals, nitrate is metabolized into nitrous oxide, the third most potent greenhouse gas. 50% of nitrous oxide comes from aquatic ecosystems, like the ones these microbes reside in. While previous research had shown that various metals were essential to the microbes’ metabolisms, this research proved that the metals could act differently depending on the situation.

After collecting samples of microbes and their environments from wetlands and riverbeds, researchers found that copper is the most critical metal in denitrification. Additionally, they discovered that there was not enough copper in the habitats they sampled to support the denitrification process adequately.

In small amounts, copper acts as a nutrient, so Sharma proposed adding a small amount of copper to the ecosystem to see if it would reduce the harmful nitrous oxide that the microbes produced. When the team did this, they found that nitrous oxide was processed into other compounds and thus not released.

While manually adding copper to a wetland might be an immediate solution to reduce greenhouse gases, not all ecosystems are created equal. To truly understand watershed ecosystems, collaboration between environmental scientists across disciplines will be vital to understanding effective ways to cut down on greenhouse gases and protect our environment.  

Sources: The Source (Washington University in St. Louis)Geochimica et Cosmochimica Acta

About the Author
BS Biology
Hannah Daniel (she/they) is a recent graduate of Carnegie Mellon University, where she received a Bachelor of Science in Biology with an additional minor in Creative Writing. Currently, she works as a reporter for Informa Intelligence's Health, Beauty, and Wellness publication, a business newsletter detailing the latest innovations and regulations in the OTC drug and supplement worlds.
You May Also Like
MAY 06, 2022
Drug Discovery & Development
Scientists discover new methods of production for Sulphur-based medications
MAY 06, 2022
Scientists discover new methods of production for Sulphur-based medications
Modern medicine has drastically changed since humans discovered the first ancient treatment methods. Herbal remedies and ...
MAY 18, 2022
Earth & The Environment
Landslides can have a major impact on glacier melt and movement
MAY 18, 2022
Landslides can have a major impact on glacier melt and movement
When we think of glaciers, horrifying images of them receding into the water because of climate change immediately come ...
JUN 03, 2022
Earth & The Environment
Why are plate tectonics so awesome?
JUN 03, 2022
Why are plate tectonics so awesome?
We often affiliate plate tectonics with earthquakes, as we are all taught in school that the shifting of plates leads to ...
JUN 05, 2022
Earth & The Environment
Which forces control the elevation of mountains?
JUN 05, 2022
Which forces control the elevation of mountains?
Let’s face it, mountains are awesome. They’re awesome to look at and even more awesome to climb. There are f ...
JUN 16, 2022
Chemistry & Physics
Ionizing the Ultralight Particles Around Black Holes
JUN 16, 2022
Ionizing the Ultralight Particles Around Black Holes
Black holes are infamous for capturing things around them; however, it is a little-known fact that they also lose some m ...
JUN 20, 2022
Technology
Device Desalinates Seawater Faster Than Current Methods
JUN 20, 2022
Device Desalinates Seawater Faster Than Current Methods
Water is becoming an increasingly precious resource. It’s estimated that about one billion people have little acce ...
Loading Comments...