What is
biogas?
Biogas is the easiest & cheapest to produce biofuel. It is abundant & may be the most eco-
friendly among all biofuels.
Biogas and the science behind its production (known also
as anaerobic digestion) &
digester designs & principles of operation are not covered in this website.
The following
links and many others provide substantial information:
http://en.wikipedia.org/wiki/Biogas
http://en.wikipedia.org/wiki/Anaerobic_digestion
http://www.adelaide.edu.au/biogas/
On-line tutorial lessons covering anaerobic
digestion of animal wastes, digester designs
& operating principles are available. They include videos of an actual
construction,
explanations that use animation, common problems to avoid & innovative
solutions.
Inquire at biofuelswork@gmail.com
Biogas Digesters
Pictures of experimental digesters
the author used in his research.
The devices used to make biogas are called biogas
digesters. The HBS or
Home Biogas System and the MS PBD or Multi-Stage Philippine BioDigester
are discussed below:
HBS or Home Biogas System
The HBS (Home Biogas System) is a low-cost &
easy-to-build biogas digester
developed for tropical countries. It uses readily-available materials & it
can be
built as a Do-It-Yourself (DIY) project by most farmers.
By comparison, the popular China Fixed Dome (CFD) digester
is designed
for temperate or cold climates. It is basically built underground to be
situated
below the frost line. The India Floating Cover (IFC) digester is designed
primarily
for use with “gobar” or cow dung. Its cover is
expensive & prone to operational problems.
The Tubular Polyethylene Digester (TPD) is very cheap & very easy to build
but is flimsy & not very durable.
The HBS is designed for the efficient production of biogas
for use as cooking fuel
in small households. It can be fed with animal manure but works best with pig,
cow or poultry manure. The 5.0 m3 (cubic meter) HBS unit can be built for
under 15,000 Philippine Pesos (U$300).
When fed with at least 20 L/D (liters/day)
of manure, it can produce 2.0 m3 of biogas that can be used to cook twice a
day.
Keep reading &/or visit the following links for more
information:
http://www.appropedia.org/Home_biogas_system
http://www.habmigern2003.info/biogas/Baron-digester/Baron-digester.htm
Or, email biofuelswork@gmail.com for free HBS building
plans & instructions.
MS PBD or Multi Stage Philippine BioDigester
The MS PBD (Multi-Stage Philippine BioDigester)
is a digester system
designed for large swine, cattle and poultry farms. Its primary purposes are
efficient
production & collection biogas to mitigate the escape of biogas into the
atmosphere
(as it is a potent greenhouse gas (GHG) that worsens Global Warming) & to
use biogas
as a fuel (to cheaply generate abundant mechanical, electrical & thermal
power.)
Like its sibling (the HBS), the MS PBD features innovative
ideas that allow
compact design, agitation & easy sediment removal. Features
that also makes it
less expensive & more economical.
Biogas systems installed to specifically prevent or
mitigate the escape of biogas
into the atmosphere towards helping prevent Global Warming are eligible as CDM
(Clean Development Mechanism) projects of the UNFCCC (United Nations Framework
Convention on Climate Change) & the
In addition to building your biogas system, we offer
consultations pertaining to
CDM project qualification, evaluation & documentation to properly plan your
investment.
For other questions or information, please email: biofuelswork@gmail.com
or visit our Home Page at: www.biofuelswork.com