The microorganisms that have the ability to produce electricity are called :
Final e- acceptor:
electrodes in a cell rather than nitrates sulphates iron and oxygen .
WHAT IS THE SOURCE OF INSPIRATION
3 main components
How does it work?
Bacteria form a community
on anode called BIOFILM .
Biofilm produce a matrix
that stick to the anode.
Sticky matrix consists of
extracellular proteins, sugars,
and bacterial cells.
tiny conductive nanowires
that may help facilitate
ISSUE:HOW TO STICK BACTERIA TO ANODE?
A N O D E and c a t h o d e conductive Chemically stable biocompatible Non corrosive Stainless steel mesh Graphite plates Glassy carbons platinum
TYPES OF MFC 1. ANY MICROBE CAN PRODUCE ELECTRICITY WITH AN ELECTRON SHUTTLE (INEFFICIENT) 2.MEDIATORS ARE MOSTLY PHENOLICS WHICH ARE EXPENSIVE & TOXIC 1.NO ADDITIONAL ELECTRON SHUTTLE IS NEEDED 2.FEW KNOWN MICROBES HAVE THIS ABILITY 3.SHEWANELLA AND IRON REDUCERS DO!
Alcaligenes faecalis ,
Enterococcus faecium ,
Pseudomonas aeruginosa ,
Aeromonas species were detected in the before-mentioned studies
Azoarcus and Azospirillum )
ISSUE:WHICH MICROORGANISM TO BE USED?
APPLICATIONS AND USES
mfc Waste disposal Water treatment biosensors teaching Medical devices Remote power supplies
LOW COST LOW MAINTENANCE
ZERO POLLUTION SUSTAINABLE
VASTLY AVAILABLE USE WIDE RANGE OF
We don’t spend a lot of time pondering wastewater treament unless we absolutely have to!!
2 billion people are without access to adequate sanitation or safe drinking water.
These challenges demand for innovative solution
This is where microbial fuel cell comes in…
Various mfc designs in use
The designs can be divided in two types:
1) Research type MFCs :
Scale up is still a big challenge
High cost of cation exchange membranes
Potential for biofouling
High internal resistance the power generation and limit the practical applications of mfc’c
NEGATIVE SIDE OF THE PICTURE
With the world’s attention focused on
global warming and depleting Natural
resources, demand for green energy
Mfc is an excellent source of bioenergy,that is energy from micro organisms.
It is a promising solution for energy crisis because it is cheaper, cleaner and sustainable and can use variety of substrate/waste as a fuel
Since It is a novel technology,it still needs a lot of working and recognition to be applied on large scale all over the world.