Increasing access to homestead biogas in Tentulia, Bangladesh

Increasing access to homestead biogas in Tentulia, Bangladesh

  oil & gas biogas, sustainable development, green energy, renewable energy bangladesh

snvworld.org – 

The purpose of this Institute for Sustainable Development (ISD) pilot project is to encourage the use of homestead biogas technology in Tentulia district, Bangladesh. The ISD provided the possibility to acquire a homestead biogas plant without any cash down-payment and to use cow dung and bioslurry as a reimbursement mechanism. The study also sheds new light on the broader motivations for acquiring biogas plants; in particular regarding the barriers to acquiring biogas plants and indicators to better determine potential biogas plant owners.

Download PDF Increasing access to homestead biogas in Tentulia, Bangladesh

Basic Anaerobic Digester ( PDF)

The Design and Theory of a Basic Anaerobic Digester

With environmental issues such as the greenhouse effect and correct waste disposal methods gaining much attention throughout the community, the concept of controlled anaerobic digestion is perhaps a much overlooked example of a way to reduce green house gas emissions and provide a better waste disposal method for organic waste.

Introduction 

Controlled anaerobic digestion is by no means a radical or new concept. Large scale industrial digesters and small domestic digesters are in operation in many places around the world. The purpose of all these digesters is to produce combustible biogas which can be burned to provide energy for a whole range of uses. Here in Australia, there is quite a bit of ideological interest in anaerobic digestion and biogas production, particularly from intensive farmers, but there are not many examples of digesters in operation. These farmers are interested in this topic primarily as an alternative energy source (biogas), and secondly, as part of an efficient effluent waste disposal system for the farm. Somehow there seems to be a problem in finding ways to put controlled anaerobic digestion into practice on the average Australian farm. There is almost a small library of information from all over the world on this topic, but this information doesn't seem to be reaching the average intensive farmer with some interest in this topic. Why isn't this concept being utilized more? There could be a number of possible reasons for this including the capital cost of setting up an anaerobic digester project, a lack of working models and / or a lack of a source of ideas to base individual projects on, i.e. - trouble shooting and project development at a technical 'on farm' level. The purpose of this project was to develop a small scale working prototype possibly suited to operate on the average farm. The focus of this project was the production of usable (combustible) biogas. This project is definitely not supposed to be revolutionary or radically new, but rather to be a starting point for further research and development in this area.  The purpose of this report is not to provide a method for the fabrication of the project produced (although a basic materials list will be provided). Rather, this report will aim to identify key aspects of the design, concentrating on their function and the theory behind their function. Therefore, the aim of this report is to provide the reader with a
basic explanation of the mechanics of a small, continuous flow anaerobic digester.

Download   PDF The Design and Theory of a Basic Anaerobic Digester

Ferrocement Biogas Digester

How to Build a Low-cost Ferrocement Biogas Digester

Download PDF How to Build a Low-cost Ferrocement Biogas Digester

Anaerobic Digestion (Biogas) Technology

Climate Friendly Farming Topics, Anaerobic Digestion (Biogas) 

Small-Scale Biogas Technology

Biogas technology has been used globally for decades, with primary applications for large-scale, high-tech commercial systems in Europe (and limited penetration in the US) and small-scale, low-tech “house-hold” scale systems in Asia. The potential for application of biogas technology on small-scale farms in the US is great for providing alternative means for managing on-farm organic wastes (manure, on-farm food processing) and providing a clean, renewable source of energy for on-farm applications (thermal energy for water heating, food processing, etc.). Making biogas technology a viable option for small farms requires the development of reliable, effective biogas reactors that can be readily fabricated and maintained by farmers. With support from the USDA Western Sustainable Agriculture Research & Education Program (Western SARE), CSANR developed a project to explore options for developing improved biogas technology for applications in small-farm settings in the US. Resources developed in this project are available on this site.

Project Resources and Publications

Advanced Biogas Plant Design
Detailed CAD drawings for improved version of pilot biogas plant developed at WSU.
Advanced small-scale anaerobic digester design tailored for household user living in cold climate
WSU Invention Disclosure.
A Procedure to Estimate Proximate Analysis of Mixed Organic Wastes
Journal of Water Environment Research 81:4.
Biomass Inventory Technology and Economics Assessment
Wei Liao, Craig Frear and Shulin Chen, June 2007. This project compiled a literature search for biomass chemical characterization and conducted supplemental laboratory study of forty two feedstocks for 33 parameters such as dry matter, COD, carbohydrates, lipids, elemental and mineral matter, and standard properties such as protein, fiber, pH, etc. A follow-on report will group similar feedstocks, assess potential energy conversion technologies and conduct an economic analysis of feedstock collection and energy production.
Producing Energy and Fertilizer from Organic Municipal Solid Waste - Project Deliverable #1

Usama Zaher, Dae-Yeol Cheong, Binxin Wu, and Shulin Chen, June 2007. A literature review of current digester technologies formed the framework for designing a bench scale study of a high solids anaerobic digestion (HSAD) system. The study shows that significant improvements in methane production can be attained while decreasing capital costs for facilities.  A new digester design is proposed that will optimize methane from organic food and green waste digestion, while recovering nutrients from the digestate. 

Household Biogas Digester: An Underutilized Potential
A presentation on applications of small-scale biogas plants in India.
Biomass Inventory and Bioenergy Assessment
Craig Frear, Bingcheng Zhao, Guobin Fu, Michael Richardson, Shulin Chen, and Mark Fuchs, December 2005. A biomass inventory and bioenergy assessment of forty five organic resource types across Washington was completed, producing this report and a database with GIS maps (http://www.pacificbiomass.org). Annual production of over 16.4 million tons of underutilized bone dry biomass was found, capable of producing (either by combustion or anaerobic digestion) over 15.5 billion kWh of electrical energy.
Smale-Scale Biogas Plant Enterprise Assessment Tool
A worksheet to facilitate preliminary planning for a biogas plant on a small farm.

Images

Images of small-scale biogas plant.  The pilot plants developed for this project were fabricated from steel to facilitate mobility and durability as demonstration units.   Actual biogas plants could be fabricated from a number of different materials.





Source: http://csanr.wsu.edu/pages/Small-Scale_Biogas_Technology

How to Build a 55-Gallon Drum Digester

The Complete Biogas Handbook How To Build a Small Biogas Digester

 

How to Build a 55-Gallon Drum Digester

In small– and micro–scale biogas, one of the classic approaches is to use 55– (or 30–) gallon drums, in one configuration or another, to make a digester. Indeed many have done it (e.g. Energy Farms, or Larry Romesberg), and in fact there is a good deal of information about 55-gallon drum digesters (some of which are quite interesting) in The Complete Biogas Handbook (TCBH): but several points should be made:

• As a general rule, a digester kept warm and well-fed will produce its own volume in biogas every day. So think about the fact that fifty-five gallons of biogas is ~7.5 ft³, ~200 liters. A single burner stove, depending on a number of factors, will consume about twice that much biogas every hour, meaning that one has to generate biogas out of a 55-gal drum (kept warm!) for a full day in order to run a single-burner stove for a half hour. Therefore this is the first point:
  • 55-gallon drum digesters made from one drum are usually just too small to produce practical amounts of biogas. Fine for experimenting; probably not much help with living.
• One can produce more biogas by “ganging” drums together, as shown below, but the key difficulty, as we implied above, is that to get much biogas out of a digester, it has to be kept warm (the temperature of your gut is our aim). Any digester can of course be warmed (gain heat) from the sun or air on its surface, but where the weather is not in the optimal range— the ‘mesophilic’ range, 70° to 104°F, 21° to 40°C— the digester will lose heat from all of its surfaces, and practically speaking, that makes it harder to retain heat because (say) four 55-gallon drums will have a lot more surface area than one 200+ gallon container. For most of the world, above or below the equatorial belt or at high altitude (Europe, the US, the better part of Asia, Australia and little New Zealand: Antarctica!!) that kind of weather is only available for a few months a year, if that. Therefore this is the second point:
  • Digesters made from 55-gallon drums require more heat/energy input to maintain a given temperature in the digester(s) as compared with the same volume in a larger container; and for many of us, digesters are hard enough to keep at an optimal temperature as it is.
  
• It’s not easy to build a continuous-fed digester when starting with a 55-gallon drum. TCBH has a design that does it— pg. 215; and see below. (This image was used on the cover of a VITA publication called “Understanding Biogas Generation”, by the way, and may well have served as the basis for a design by ECHO discussed here.) Another continuous-fed design using drums is very briefly described in this publication.) That means— just in case it’s not obvious already— that most digesters made from 55-gallon drums will be batch-fed; they will have to be filled, they will generate biogas for a couple of months (maybe), and they will then have to be emptied. That may sound like no big deal, but don’t forget that a 55-gallon drum filled with anything that will actually make biogas will weigh about 420 pounds, 190 kg, or more. (How much weight can you bench press?) As an example of a digester design using multiple 55-gallon drums yet which fails to mention the considerable difficulty of wrestling with them, consider this one. The point is that once you fill it up, you may not be able to empty that 55-gallon drum without some kind of mechanical assistance. Most people would not even be able to push it over, if it was on a stable base. Do you own a tractor? So this is the third point:
  • Digesters made from 55-gallon drums may be damn inconvenient to work with.
  
• And finally, although more might be said about this subject, let me say that in my area of the world (northern Oregon, USA), free drums are not easily found, and the other kind— the kind you have to pay for— cost at least $10, often more. Considering some of the other alternatives mentioned below, this leads us to make the final, perhaps surprising point about digesters made using 55-gallon drums:
  
  • On a per volume basis, digesters made from 55-gallon drums can be relatively expensive.
  Recommendation: Perhaps the classic reference with regard to making a digester out of a 55-gallon drum is from the United Nations’ Food and Agriculture Organization (FAO), “Biogas: Building a better bio­gas unit” (pub. 1986), one version of which is found here. (You may also want to get the publication previous to this one, called “Biogas: What it is, How it is made; How to use it”.)

Step-by-Step Guide to Constructing a Floating Drum Biogas Digester.

Step-by-Step Guide to Constructing a Floating Drum Biogas Digester.

 BuwamboImages.pdf
See photos on Flickr

 Biogas in Mbarara.pdf or  Step by Step Construction.pdf (prepared by Vianney) has more photos and details.
The biogas did burn after 14 days, so feeding has commenced!

Download Biogas PDF from FAO Food and Agriculture Organization

Download Biogas PDF from FAO Food and Agriculture Organization

1. 
   
   

   BIOGAS PRODUCTION FROM MIXTURES OF CATTLE SLURRY AND PRESSED SUGAR ...

   
   

   File Format: PDF/Adobe Acrobat - Quick View
   by B Pound -
   Trop Anim Prod 1981 6:1. 11. 1. Technical Cooperation Officer, Overseas Development Administration, London. 2. Consultant to to the Project DOM 77/002 ...
   www.fao.org/ag/AGa/AGAP/FRG/tap61/61_11.pdf
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2. [PDF]
   

   Small-Scale Biogas Scheme for Poverty Scale Biogas Scheme for ...

   
   

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   Technical Consultation on. Sustainable Small. Sustainable Small-Scale Livelihood. Scale Livelihood-Oriented Bio. Oriented Bio-energy. Initiatives ...
   www.fao.org/bioenergy/26330-0724f10bd49389d3f7f3167a9dcfd8f10.pdf
3. [PDF]
   

   Addendum B3 Biogas

   
   

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   Common Fund for Commodities. PROJECT CFC/FIGHF/07. PRODUCT AND MARKET DEVELOPMENT OF. SISAL AND HENEQUEN. Project Completion Report ...
   www.fao.org/es/esc/common/ecg/330/.../Addendum_B3_Biogas.pdf - 
4. [PDF]
   

   THE PRODUCTION OF BIOGAS FROM CATTLE SLURRY, THE EFFECTS OF ...

   
   

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   by A Santana -130. Trop Anim Prod 1980: 5:2. Paper first presented at the 5th Annual Meeting of the Dominican Centre for Livestock. 1. Research with Sugar Cane, ...
   www.fao.org/ag/aga/agap/frg/tap52/5_2_5.PDF
5. [PDF]
   

   THE EFFECT OF RETENTION TIME ON BIOGAS PRODUCTION FROM SLURRY ...

   
   

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   by A Boodoo -Trop Anim Prod 1977 4:1. 21. This work was supported in part by funds provided by the UNDP/FAO project MAR/75/004. 1. FAO Consultant to MAR/15/004; ...
   www.fao.org/ag/aga/agap/frg/tap41/4_1_3.pdf

Biogas from Waste and Renewable Resources: An Introduction

Biogas from Waste and Renewable Resources: An Introduction

Description:

Written as a practical introduction to biogas plant design and operation, this book fills a huge gap
by presenting a systematic guide to this emerging technology -- information otherwise only
available in poorly intelligible reports by US governmental and other official agencies. The author
draws on teaching material from a university course as well as a wide variety of industrial biogas
projects he has been involved with, thus combining didactical skill with real-life examples.
Alongside biological and technical aspects of biogas generation, this timely work also looks at safety
and legal aspects as well as environmental considerations.

Authors bio:
Dieter Deublein is Professor for Applied Biotechnology at the Munich Unversity of Applied Sciences
(Germany). A graduate from the Technical University of Munich, he has more than two decades of
professional experience in the large scale processing of natural resources, mainly from food and
feed. Since 1992 he is a member of the Faculty of the Munich University of Applied Sciences, where
he has established a strong teaching record in biotechnology and environmental management. He
is a leading scientific authority on the technological aspects of biogas production, both in small-
scale and large-scale operations.

Contents:

Introduction
- Development of world energy consumption
- Current global use and potential of biogas
Biogas
- Main biogas components
- Side components: ammonia, hydrogen sulfide
- Main biogas substrates
Biochemistry and Microbiology
- Biogas evolving reactions
- Biogas producing bacteria
- Bioreactors
Safety and Legal Aspects
- Legal regulations
- Fire and explosion hazard
- Microbial safety
- Feasability studies
Biogas Plant Design
- Preprocessing of raw materials
- Bioreactors for simple fermentation
- Bioreactors for dry raw materials
- Bioreactors for low energy raw materials
- Bioreactors for mixed raw materials
Biogas Use
- Collection and storage
- Gas processing
- Generation of electricity and heat
- Biogas as supplement to natural gas
- Biogas as automotive fuel
Environmental Considerations
- Solid waste
- Wastewater
Appendices
- General scheme and business model of a biogas plant
- List of suppliers.

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Biogas in Indian Cities

Biogas in Cities – A New Trend?

Anaerobic Digestion of Kitchen and Market Waste in Developing Countries So far, several million conventional biogas plants, using predominantly animal manure as feedstock,have been successfully installed in rural areas of developing countries. However, can anaerobic digestion also be a suitable technology to treat organic household waste in urban and peri-urban areas to alleviate the solid waste crisis in cities of the developing world? Yvonne Vögeli, Chris Zurbrügg

In many cities of developing countries, the most serious environmental and health problems are related to inadequate solid waste management (SWM). Progressing urbanisation and rapid population growth
lead to increasing amounts of waste, thereby also increasing pressure on local authorities responsible for the provision of safe and reliable public services.Municipal Solid Waste (MSW) in developing countries is rich in organic material (upto 70 %). However, if this organic fractionis not managed adequately, it causes nuisance for urban dwellers and pollutes theenvironment due to its easily biodegradable nature. Unreliable collection leadsto smelly dumps in neighbourhoods and attracts animals, such as rodents, the typical transmitters of diseases. Lack of treatment or non-engineered and unsafe disposal causes soil, surface water and
groundwater pollution through leachate, and uncontrolled methane emissions contribute to global warming. Consequently, particular attention should be given to the organic fraction of municipal solid waste.
Some treatment options for biodegradable waste, such as aerobic composting or direct animal feeding have been identified in practice and are more or less well-recognised as proven solutions in certain contexts. Nevertheless, there is still scope for improvement by increasing the value and further potential benefits of the treatment steps and generated products. Aside from using worms or larvae to digest the waste
(as described in another article of this Sandec News issue), anaerobic digestion (AD) or biomethanation of organic solid waste is likely to be a promising treatment option. Under anaerobic conditions, bacteria break down the organic matter and produce biogas. This mixture of CO2 and methane (CH 4) can be used as an energy source for cooking, lighting or even to generate electricity, thereby replacing other fuels.

 Read more...

Or 
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Bio Gas from Textile Cotton Waste

Bio Gas from Textile Cotton Waste - An Alternate Fuel for Diesel Engines

Bio Gas from Textile Cotton Waste

C. Sundar Raj*,1, S. Arul2, S. Sendilvelan3 and C.G. Saravanan4

1 MGR Educational and Research Institute, MGR University, Chennai; Department of Mechanical Engineering,
Bharathiyar College of Engineering and Technology, Karaikal, Pondicherry 609 609, India

2 Panimalar College of Engineering, Chennai, India

3 MGR Educational and Research Institute, Chennai, India

4 Department of Mechanical Engineering, Annamalai University, India.

Abstract: Methane was generated from cotton waste, while considering its pollution in textile industries. Cotton waste in-cludes solid content and is rich in cellulose having a moisture content of 8.8%. It is difficult to form slurry as the waste float on water and hence an experimental set up has been made like a batch type digester and experiments were conducted with a different proposition of water with or without addition of seeding materials. It was found that cotton waste with 5 to 7.5% seeding material like cow dung or pig dung at temperatures of 30 to 350C generated bio gas continuously, with a reasonably high yield from the tenth day after feeding. The gas contained rich methane and was tested in a single cylinder diesel engine as a dual fuel had the tendency to save 60% of diesel.

READ MORE ...

Biogas Plant Design PDF Resources

Biogas Plant Design PDF Resources

1. [PDF]

Biogas Digest, Volume I: Biogas Basics

File Format: PDF/Adobe Acrobat - Quick View
This information service on biogas technology has been developed and produced on ...... Normally, the biogas produced by a digester can be used as it is, ...
www.gtz.de/de/dokumente/en-biogas-volume1.pdf - Biogas bdf

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2. [PDF]

Biogas Digest Volume III - Biogas - Costs and Benefits and Biogas ...

File Format: PDF/Adobe Acrobat - Quick View
This information service on biogas technology has been developed and produced on the ...... Costs of a biogas bdf (production, running and capital costs) ...
www.gtz.de/de/dokumente/en-biogas-volume3.pdf - Biogas bdf

3. [PDF]

Biogas Digest Volume IV - Biogas – Country Reports

File Format: PDF/Adobe Acrobat - Quick View
biogas program, it is suggested that based on field information biogas cell is ... The first project of the GTZ concerning the biogas technology in Belize ...
www.gtz.de/de/dokumente/en-biogas-volume4.pdf - Biogas bdf

4. [PDF]

Biogas Digest, Volume II: Biogas - Application and Product Development

File Format: PDF/Adobe Acrobat - Quick View
This information service on biogas technology has been developed and ...... As a biogas unit is an expensive investment, it should not be erected as a ...
www.gtz.de/de/dokumente/en-biogas-volume2.pdf - Biogas bdf

5. [PDF]

SANITATION AND BIOGAS PRODUCTION

File Format: PDF/Adobe Acrobat - Quick View
garden waste enter the digester and are broken down to biogas and fertile water. ... Simple Fixed-Dome Biogas Digester for Wastewater Treatment ...
www.gtz.de/en/.../en-sanitation-conference-technologies-costs-biogas.pdf

6. [PDF]

Agro-Industrial Biogas in Kenya

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Proposal for basic tariffs for electric power from biogas in Kenya. Basic-FiT ... Early mover bonus to accelerate development of biogas in Kenya ...
www.gtz.de/de/dokumente/gtz2010-en-biogas-assessment-kenya.pdf - Biogas bdf

7. [PDF]

TECHNOLOGY X

File Format: PDF/Adobe Acrobat - Quick View
14 Jul 2010 ... is to provide an overview and introduction on biogas santation for blackwater, brown water, or for excreta treatment for reuse ...
www.gtz.de/en/.../gtz2010-en-technology-review-biogas-sanitation.pdf - Biogas bdf

8. [PDF]

Technology review of constructed wetlands

File Format: PDF/Adobe Acrobat - Quick View
Biogas emissions during pre-treatment . ...
www.gtz.de/en/.../giz2011-en-technology-review-constructed-wetlands.pdf

9. [PDF]

Child Health and Sanitation

File Format: PDF/Adobe Acrobat - Quick View
Where the liquid effluent from the biogas reactor can be used as fertiliser ... maintenance is available (leading countries for biogas ...
www.gtz.de/en/dokumente/gtz2010-en-biogas-sanitation-muench.pdf

10. [PDF]

Biogas 0.21 MB (English

File Format: PDF/Adobe Acrobat - Quick View
Small-scale Electricity Generation from Biomass - Part II: Biogas ... the utilisation of biogas for small and medium scale electricity generation in ...
www.gtz.de/.../gtz2010-en-small-scale-electricity-generation-from-biomass-part-2.pdf - Biogas bdf

HOW TO BUILD A POLYETHYLENE BIOGAS PLANT

 STEPS TO INSTALL A BIODIGESTER FOR A RURAL FAMILY 

Step 1: Materials 

The recommended biodigester length for a small family is 10 meters. To install a biogas plant of this size, the materials listed below are needed: 
•  28 meters of natural polyethylene plastic, 1000 gauges, 1.5 meters width.
•  8 used buckets (~20 L) of the same size or 2 cement pipes, 1 meter length, 12 inches in diameter
•  1 PVC screw (male adapter),1 inch in diameter
•  1 PVC cap (female adapter) 1 inch in diameter
•  2 meters of transparent plastic hose of 1 ¼ inches in diameter
•  1 PVC "T", 1 inch in diameter.
•  2 - 90º PVC elbows, 1 inch in diameter
•  1 meter of pressure PVC pipe, 1 inch in diameter
•  1 flat PVC cap ,1 inch in diameter
•  2 round plastic or aluminum disks (20-15 centimeters in diameter with a central hole of 1 inch)
•  1 transparent plastic bottle - 1 gallon of capacity
•  3 used tires automobile tubes (rubber belts)
•  8 used plastic fertilizer sacks
•  1 galvanized metallic pipe, ½ inch in diameter 50 centimeters length
•  1 tube of PVC glue
•  1 steel wool
•  An automobile or motorcycle as source of exhaust
•  1 plastic hose to take exhaust from the car to the place where the biodigester will be installed

Step 2: Biodigester location  

Once all the materials are obtained, the biodigester location needs to be decided. The biodigester should be close to the animals, and it is also recommended to connect any human latrines to the biogas plant to
eliminate another source of pollution. Lastly, the location should be near the kitchen where the biogas will be
used.  Next, proceed to dig a grave in the ground. This grave is needed to protect the biodigester from any
damage (from wild and domestic animals) and to help to maintain an appropriate atmosphere for the production of biogas.   An inclined gutter should be dug at each end of the grave. It should be the same width as the cement pipes.  It is necessary that the floor of the grave is in no way sloped, or else, the system will not work. Also, the walls should be totally flat and free of stones or roots that can break the bag.  Dimensions for the grave are as

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Source : http://journeytoforever.org/biofuel_library/digeste.pdf

Biogas Notes PDF Prepared by Mr. Paul Harris

Biogas Notes

Prepared by Mr. Paul Harris Updated July 7, 2008

Overview

TABLE OF TABLES .........................................................................................................3
TABLE OF GRAPHS ........................................................................................................3
INTRODUCTION ..............................................................................................................4
WHAT IS BIOGAS? .........................................................................................................5
BRIEF HISTORY .............................................................................................................5
USES OF BIOGAS .............................................................................................................6
ANAEROBIC DIGESTION ................................................................................................7
SAFETY...........................................................................................................................8
FIRE/EXPLOSION .............................................................................................................8
DISEASE ..........................................................................................................................8
ASPHYXIATION ...............................................................................................................9
SUMMARY .......................................................................................................................9
USES FOR LIQUID/SLUDGE ...........................................................................................10
DIGESTER PERFORMANCE ...........................................................................................10
BIOGAS TABLES ...........................................................................................................13
TYPES OF DIGESTERS ..................................................................................................15
CONSTRUCTION TIPS ...................................................................................................15
STARTUP ......................................................................................................................16
MONITORING DIGESTER OPERATION.........................................................................16
GAS STORAGE..............................................................................................................17
BURNERS ......................................................................................................................17
FAULT FINDING ...........................................................................................................18
AREAS OF CIRCLES......................................................................................................19
FURTHER INFORMATION .............................................................................................21
BOOKS ..........................................................................................................................21
ELECTRONIC SOURCES ..................................................................................................21
REFERENCES................................................................................................................21

APPENDIX 1 – NOTES FROM THE FIRST COURSE IN BAMENDA. ...........22

MAKING THE POLY DIGESTER! ..................................................................................22
FEEDING THE POLY DIGESTER! ..................................................................................23

APPENDIX 2 – BURNER DESIGN.........................................................................24

Download : Biogas Notes PDF

Biogas Plants by Ludwig Sasse PDF

Biogas Plants by Ludwig Sasse

Content

Acknowledgments ................................................................................................ 1

Preface.................................................................................................................... 4

0.

Biogas as appropriate technology .............................................................. 5

1.

Benefits and costs of a biogas plant .......................................................... 7

2.

The digestion process.................................................................................. 9

3.

Biogas plants .............................................................................................. 12

4.

Scaling of biogas plants ............................................................................ 16

5.

Design of biogas plants ............................................................................. 28

6.

Biogas utilization ........................................................................................ 44

7.

Planning, design and construction ........................................................... 48

8.

Appendix ..................................................................................................... 57

Bibliography......................................................................................................... 64

Download Full E book (PDF)  Biogas Plants  by Ludwig Sasse

Biogas Plant Design in pdf

DOWNLOAD DESIGN OF BIOGAS PLANT IN PDF



Introduction:

Biogas can be obtained from any organic materials after anaerobic fermentation by three main phases.

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