Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wiring microbes to conduct and produce electricity faster

05.09.2013
A team of researchers in Ireland have found evidence that altering the chemistry of an electrode surface (surface engineering) can help microbial communities to connect to the electrode to produce more electricity (electron-exchange) more rapidly compared to unmodified electrodes.

Electron exchange is at the heart of all redox reactions occurring in the natural world, as well as in bioengineered systems: so called 'biolectrochemical systems'.


This shows wiring microbes to conduct and produce electricity faster.

Credit: Amit Kumara

Practical applications of these systems include current generation, wastewater treatment, and biochemical and biofuel production. The microbial-electrode interface is a sum of complex physical-chemical and biological interactions permitting microbes to exchange electrons with solid electrodes to produce bioelectrochemical systems.

In these systems the microbes, compete, and self-select electrode materials for electron exchange capabilities. However, to date this selection is not well understood yet electricity or chemicals can be produced using various substrates, including wastewater or waste gases, depending upon operational settings, says Amit Kumar, who worked under the leadership of Dónal Leech at the National University of Ireland Galway in Ireland.

The Biomolecular Electronics Research Laboratory has been working on probing conditions for selection of electrodes by microbes for several years, and we have recently adopted an approach to tailor the chemistry of electrode surfaces which will help us better understand the selection mechanism says Amit Kumar and Dónal Leech. Our first result shows that surfaces modified with nitrogen-containing amines result in higher and more rapid production of current, compared to those without this modification, when placed in microbial cultures.

Next on our researcher agenda is to elucidate the selection mechanism using a range of surface modifications and microbial cultures.

ADDITIONAL AUTHORS:

Amit Kumara&,b, Peter Ó Conghailea, Piet Lensb and Dónal Leecha
aSchool of Chemistry & Ryan Institute, National University of Ireland Galway, Ireland.

bDepartment of Environmental Engineering and Water Technology, UNESCO-IHE, Delft, the Netherlands. Email amit.ugent@gmail.com

POPULAR TITLE:

Wiring microbes to conduct and produce electricity faster

The work was performed at the Biomolecular Electronics Research Laboratory (National University of Ireland, Galway).

Who did the work: Amit Kumar and co-authors

Funding source: European Commission, Marie Curie Program- Intra European Fellowship

Meeting: Gordon Research Conference, Applied & Environmental Microbiology

Exploring and Exploiting the Depths of the Microbial Biosphere

July, 2013, Mount Holyoke College, South Hadley, MA

Full study just published online in

RC Advances
Arylamine functionalization of carbon anodes for improved microbial electrocatalysis
Amit Kumar, Peter Ó Conghaile, Krishna Katuri, Piet Lens and Dónal Leech
RSC Adv., 2013, online at http://pubs.rsc.org/en/Content/ArticleLanding/2013/RA/c3ra42953a Or http://dx.doi.org/10.1039/c3ra42953a

Amit Ugent | EurekAlert!
Further information:
http://www.nuigalway.ie/

More articles from Life Sciences:

nachricht Closing the carbon loop
08.12.2016 | University of Pittsburgh

nachricht Newly discovered bacteria-binding protein in the intestine
08.12.2016 | University of Gothenburg

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

Closing the carbon loop

08.12.2016 | Life Sciences

Applicability of dynamic facilitation theory to binary hard disk systems

08.12.2016 | Physics and Astronomy

Scientists track chemical and structural evolution of catalytic nanoparticles in 3-D

08.12.2016 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>