Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

This microbe's for you: Brewery waste becomes scientific fodder for producing liquid biofuels

28.02.2011
Gaining new insight into how efficiently the microbes in large bioreactors produce methane from brewery waste, Cornell scientists hope to use their new knowledge to shape these microbial communities to produce liquid biofuels and other useful products.

The scientists Largus T. Angenent, associate professor of biological and environmental engineering, and the first author and research associate Jeffrey J. Werner, published "Bacterial Community Structures Are Unique and Resilient in Full-Scale Bioenergy Systems" (Proceedings of the National Academy of Sciences, Feb. 22, 2011.)

The scientists had access to a plethora of data, thanks to a collaboration with engineers at Anheuser-Busch InBev, which makes Budweiser beer and operates nine domestic beer breweries that treat wastewater in bioreactors. They took regular samples of bioreactor sludge from each of the facilities over the course of a year and, using state-of-the-art genome sequencing software, they analyzed more than 400,000 gene sequences of the microbes in the sludge.

Among the thousands of species of bacteria, the researchers identified 145 types that were unique to each of the nine facilities -- showing that each bioreactor hosted a specific microbial community. In their analysis they observed that certain types of bacteria called syntrophs had surprisingly stable populations.

"The cool thing we found was that if you're looking at these thousands of species of bacteria, it's a very dynamic system with things dying off and replacing them," Werner said. "There are certain signature populations that are resilient. Even if they get disturbed, they come right back up."

Typically inside these million-gallon bioreactor tanks, the microbial populations in the sludge interact and one of them produces methane gas. Anheuser-Busch InBev recoups 20 percent of its heat energy use through the methane produced, saving the company millions of dollars every year.

Angenent said that where the genome surveys of these microbial communities could lead is particularly exciting. Understanding their functions and how they change with environment -- be it pH or temperature, for example -- could lead to learning how to make the communities of microbes perform new functions.

In ongoing research, the Cornell engineers are looking to prevent methane production by the microbes, and instead, to shape the bacterial communities to produce carboxylates, which are a precursor to the alkanes found in fuels.

"We are going to shape these communities so they start making what we want," Angenent said.

The researchers also collaborated with scientists at University of Colorado at Boulder and at Washington University in St. Louis. The work was supported by the U.S. Department of Agriculture, Department of Energy and National Institutes of Health.

Blaine Friedlander | EurekAlert!
Further information:
http://www.cornell.edu

More articles from Life Sciences:

nachricht Transport of molecular motors into cilia
28.03.2017 | Aarhus University

nachricht Asian dust providing key nutrients for California's giant sequoias
28.03.2017 | University of California - Riverside

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Transport of molecular motors into cilia

28.03.2017 | Life Sciences

A novel hybrid UAV that may change the way people operate drones

28.03.2017 | Information Technology

NASA spacecraft investigate clues in radiation belts

28.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>