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Resources 01Biogas cleaning system for co2 and h2s removal :The pos doc research report | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Resources 02
A number of useful publications are available from the meeting "How to create a market for domestic biogas plants?" of the "Network of Experts on Domestic Biogas" held on 5 and 6 April 2006 in Hanoi and focused on the promotion of biogas.
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First Meeting of Network of Experts on Domestic Biogas – Meeting Summary (395 KB)
A presentation showing the ways and methods for the promotion of quality biogas plants in Bangladesh (201 KB)
A National Programme for the promotion of Biodigesters in Cambodia (2,046 KB)
Biodigester Effluent and Duckweed
Ttal Votes: 1 
Total Votes: 7 
Polyethylene Biodigester
Total Votes: 4 
http://www.biogas.ch/overview.htm
Digestion of Grass
Vergärung von Energiegras zur Biogasgewinnung U. Baserga, Kurt Egger NovaEnergie, CH-8356 Ettenhausen Summary Within the scope of the research project "Digestion of Energy Grass for Biogas Production" completed in December 1996, processes for the semicontinuous digestion of energy grass were developed on laboratory scale. A number of digestion systems and processes were tested and the operating parameters for suitable systems determined. Co-digestion with slurry and dry anaerobic digestion in a solids fermenter proved to be promising processes for technical application. In the present follow-up study, the technical feasibility of the processes developed in the laboratory and the suitability for practical application in agriculture were tested. In a full scale biogas plant (co-digestion) and a pilot plant (dry anaerobic digestion), tests were run during approximately 3, that is to say 7 months. The results of these practical tests showed that the co-digestion of extenso grass in an agricultural biogas plant is technically feasible. Silage from extenso grass can be fermented in a biogas plant suitable for co-digestion and used for supplementary biogas production. In the co-digestion biogas plant, chopped silage of approximately 10 % weight was added to the daily quantity of pig slurry and the suspension (dry matter content: 8 to 10 % ) was fermented at 35° C in a horizontal flow fermenter. By adding silage, the daily gas production could be increased from 160 m3 to approximately 250 m3. The supplementary organic load (increase from 2.5 to approx. 4.3 kg OS/m3.d) had no negative effect on the process stability. This confirms the laboratory test results, where loading rates of up to 7 kg OS/m3.d lead to a stable digestion process. To guarantee a problem-free operation, the mixture must be easy to pump and no blockages should occur in the pipes. Prior to feeding, the silage was cut to a length of 1–3 cm. This proved to be the maximum length for blockage free operation at the used slurry/solid matter ratio (6-7 m3 manure/600 kg silage). For the co-digestion of the silage, approx. 30 minutes of additional work were necessary per day to assure substrate preparation. For practical operation, the time involved can be reduced through an improvement of all organisational and technical processes. In tests involving liquids recirculation in the modified Anacom pilot plant, the technical feasibility of dry anaerobic digestion of silage in a plug flow fermenter was demonstrated. During the test period of 7 months, the pilot plant worked perfectly. However, technical modifications and improvements in feeding and liquids recirculation will be necessary to ensure optimum performance. The feeding by means of a piston pump, ideally suited for feeding solid manure, is limited in its application for silage (and other dry substrates). Problem-free operation of this system can only be guaranteed by using well wetted silage (prior storage in water or slurry). Moreover, a certain amount of manure must be added to lubricate the feeding pipe. Feeding by means of a chain trough conveyor, as used in a comparable dry fermentation, might prove to be a more suitable for silage. The decisive factor for high biogas yield lies in sufficiently wetting the silage within the fermenter with liquid manure or another buffering liquid. Pig manure (dry matter:1-2%) was used as liquid phase and recirculated once to twice a day. The recirculation volume amounted to 3 to 5 % of the solids volume (150 - 250 litres of manure/5 m3 silage). At organic loads of 3, that is to say 5 kg OS/m3.d (retention time: 25 days, temperature: 35°C), approximately 80 to 85% of the maximum biogas yield were produced. The decrease in gas production as opposed to the results achieved on laboratory scale was due to the fact that the silage was not optimally wetted (due to design limitations) and that strongly compressed silage was used. For practical agricultural applications, the same equipment used for solid manure can be put to use. After storage, the consistency of the digested grass-silage permits field application using a conventional manure spreader. Two step anaerobic digestion of biogenic solid wastes W.Edelmann, A. Joss, M.Ilg et al. arbi, Arbeitsgemeinschaft Bioenergie, CH-8933 Maschwanden H.Engeli engeli engineering, CH-8173 Neerach ABSTRACT A two step process is advantageous in the case of solid wastes, because it permits the separation of the solid and the liquid phase, allowing the operation of high rate anaerobic methanogenesis for the liquid. In this process developed by arbi, hydrolysis/acidogenesis takes place in a rotating sieve-drum, which guarantees optimal mixing and percolation conditions. Circulating water is treated in the methanogenic step, i.e. in a horizontal, pulsating dynamic anaerobic filter. Over 90% of the methane is generated in the methanogenic step. The degradation of solid household and vegetable wastes (easily degradable), of Aenergy grass@ pretreated by silage as well as of coffee pulp (as an example of industrial waste), was investigated. The two step technology applied allows the conversion of over 80% of easily degradable organic wastes into biogas in less than 5 days. If hydrolysis is the rate limiting step of degradation (energy grass), it seems not to be reasonable to separate the stages, however. Coffee pulp showed a significantly better break-down in two stage digestion as compared to one step digestion. The pilot plant experiments created new insights about anaerobic breakdown and the mechanisms of process inhibition. There seem to be different possibilities for full scale application of a continuously fed, horizontal sieve-drum (washing machine), where the percolation liquid is sprinkled on the top of the drum. The results indicate that it is possible to digest easily degradable organic wastes at a total volume of the different reactors of only one third of the one needed for one step solid digestion. RESULTS: 16 experiments with different substrates and different running conditions were carried out. With vegetable wastes (salad and vegetables from catering services), the best results were obtained by recirculating daily about 1 volume of circulation water per 1 volume of waste. The pH may drop in the hydrolysis shortly to 5.6, but it remains most of the time at ~6.5. When reducing the recirculation rate to 1/10 of waste volume, the pH drops to 4.4 and inhibition is observed. While digesting vegetable wastes, the level of the recirculation water was lower than the lowest part of the drum. Keeping the lower part of the drum inside the recirculation water may be an advantage for substrates which show a tendency to clog the net inside the grid. Mesh sizes of the net should be smaller than 1mm in order to prevent a considerable wash out of suspended solids. The drum was operated at 1 RPM at intervals of 2 min Aon@ and 10 min Aoff A.
Experimental plant: Numbers: 1: Hydrolysis, 2: dynamic anaerobic filter, 3: storage/expansion tank. 4: gas balloons. The drum of the hydrolysis is hanging at the pulley (left). 
Rate of destruction of dissolved COD in filter (top), storage (centre) and hydrolysis (bottom) negative value for destruction = formation In one step anaerobic digestion of solid wastes, problems may occur if the substrate is easily degradable: Because in solid waste digestion there is no possibility for the accumulation/retention of biomass within the reactor, the slower growing methanogens are overfed at high loading rates. If, on the other hand, hydrolysis is the rate limiting step, the methanogens have enough time to grow simultaneously with the hydrolytic biocenosis. In this case it appears not worthwhile to construct a plant with a high methanogenic concentration, which needs more components than one stage digestion. With an easily degradable substrate, in two step digestion, over 80% of the theoretical gas production was freed within the first five days. Because the solid matter is degraded and reduced in space very quickly, it seems to be sufficient to construct a continuously fed hydrolysis, which has 2-3 times the volume of the daily waste input. A similar volume is needed for methanogenesis. This is less than a third of the volume of a solid waste reactor with 20 d SRT.http://www.biogas.ch/overview.htm
Research Progress in Anaerobic Digestion of High Moisture Organic ...
cigr-ejournal.tamu.edu/submissions/volume9/Invi...
Nota criada em: 2 de janeiro de 2008 - Pesquisa do Google: biogas solid ABR reactor
02/01/08
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The Potential for Perennial Grasses as Energy Crops in Organic ...
www.kursus.kvl.dk/shares/ea/03Projects/32gamle/...
Nota criada em: 2 de janeiro de 2008 - Pesquisa do Google: Elepahant grass biogas ppt
02/01/08
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Utilization of Agricultural Wastes for Biogas Production in Indonesia
eubios.info/TTEC/TTECEW.htm
Nota criada em: 2 de janeiro de 2008 - Pesquisa do Google: elephant grass biogas
02/01/08
Biogas production time (day) (oC) (L/L.d) Batch elephant grass 27 0.35 Continue elephant grass 40 27 0.85 swine manure 30 31 1.00 grass 60 35 0.79 ...
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The use of organic residues in rural communities
www.unu.edu/Unupress/food/UNU06/cap_3.htm
Nota criada em: 2 de janeiro de 2008 - Pesquisa do Google: elephant grass biogas
02/01/08
Elephant Grass. Sugar Cane Tops. Feed intake (kg/day). dry matter (DM) ... should be given to its potential as a substrate for biogas production. ...
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PRODUÇÃO DE BIOGÁS A PARTIR DE TRÊS TIPOS DE CAMA OBTIDOS EM DOIS ...
www.sbea.org.br/rea/v17_n2/artigo_2.pdf
Nota criada em: 2 de janeiro de 2008 - Pesquisa do Google: elephant grass biogas
02/01/08
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Anaerobic Digestion of Biodegradable Solid Waste in Low- and ...
www.eawag.ch/organisation/abteilungen/sandec/pu...
Nota criada em: 1 de janeiro de 2008 - Pesquisa do Google: Chanakya biogas pdf
01/01/08
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MATHEMATICAL TOOL TO SIZE RURAL DIGESTERS
www.scielo.br/pdf/sa/v60n1/14562.pdf
Nota criada em: 1 de janeiro de 2008 - Pesquisa do Google: Chanakya biogas pdf
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EG:Resources:System approach to biogas
ces.iisc.ernet.in/hpg/envis/doc98html/enbio730....
Nota criada em: 1 de janeiro de 2008 - Pesquisa do Google: Solid biodigester IISc
01/01/08
The biodigester is a physical structure, commonly known as the biogas plant. .... If the dung is too diluted, the solid particles will settle down into the ...
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Universidade do Minho: New eco-friendly hybrid composite materials ...
repositorium.sdum.uminho.pt/handle/1822/5894
Nota criada em: 26 de dezembro de 2007 - Pesquisa do Google: Eco Hybrid composite material
26/12/07
Título:, New eco-friendly hybrid composite materials for civil construction. Autor:, Eires, R. Nunes, J. P. Fangueiro, Raúl Jalali, Said Camões, Aires ...
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APLICAÇÃO DE CONCEITOS DA ECOLOGIA INDUSTRIAL PARA A PRODUÇÃO DE ...
www.teclim.ufba.br/site/material_online/dissert...
Nota criada em: 26 de dezembro de 2007 - Pesquisa do Google: Eco composite ufba
26/12/07
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NEW ECO-FRIENDLY HYBRID COMPOSITE MATERIALS FOR CIVIL CONSTRUCTION ...
repositorium.sdum.uminho.pt/bitstream/1822/5894...
Nota criada em: 26 de dezembro de 2007 - Pesquisa do Google: Eco Hybrid composite material
26/12/07
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BIODEGRADABLE COMPOSITES BASED ON IGNOCELLULOSIC FIBERS
www.niist.res.in/icamc2007/CD/Invited/I-2.pdf
Nota criada em: 26 de dezembro de 2007 - Pesquisa do Google: CNSL castor oil fiber composites
26/12/07
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Composites Science and Technology : The effect of alkalization and ...
linkinghub.elsevier.com/retrieve/pii/S026635380...
Nota criada em: 25 de dezembro de 2007 - Pesquisa do Google: plant based resin polyester Cnsl
25/12/07
Natural plant based resin CNSL resins are suitable for the manufacture of natural ... of kenaf and hemp bast fibre composites: Part 1: Polyester matrix. ...
ScienceDirect - Cement and Concrete Composites : Characterisation ...
linkinghub.elsevier.com/retrieve/pii/S095894650...
Nota criada em: 25 de dezembro de 2007 - Pesquisa do Google: Cnsl castor oil resin
25/12/07
One such potential resin is cashew nut shell liquid (CNSL), .... 7.6 g of 33% sodium hydroxide and 0.13 g castor oil were stirred for 3 h at about 90 °C. ...
Microsoft PowerPoint - spmaterials_Rajiv Nehru [Read-Only]
www.ecohousingindia.org/downloads/BldgWorkshop_...
Nota criada em: 25 de dezembro de 2007 - Pesquisa do Google: cement concrete composites Cnsl
www.newmoa.org/prevention/newsletters/17_2/Vol1...
Nota criada em: 25 de dezembro de 2007 - Pesquisa do Google: CNSL fuel additive
This summer the team studied the feasibility of using cashew nut shell liquid (CNSL) as a fuel for a CHP system. The study investigated the benefits of ...
Thermo Biopile
www.puffergas.com/pile/pile.html
Nota criada em: 22 de outubro de 2007,22/10/07
Thermo Biopile
EERE Consumer's Guide: How Anaerobic Digestion (Methane Recovery) Works
How Anaerobic Digestion (Methane Recovery) Works Biodigesters recover methane from animal manure through a process called anaerobic digestion. Here's how it works. Tags: methane, biogas, how on 2008-07-08 -All Annotations (0) -Cached -About in group: BioenergyBR more from www.eere.energy.gov
NSY Energy Engg. and Consultancy Services (P) Ltd.
Contact Person: Mr. Naval Kishore Agarwal Registered Office: NSY ENERGY ENGG. & CONSULTANCY SERVICES (P) LTD. Ground Floor, Baba House, 149A, Kilokri, Opp. Mah Tags: Biomass, small, biogas on 2008-06-11 -All Annotations (0) -Cached -About more from www.nsyenergy.com
Methane Fermentation of Seaweed Biomass
Tags: biogas, seawweed, metane on 2008-06-01 -All Annotations (0) -Cached -About more from aiche.confex.com
Integrated process for producing "clean beef" (or milk), ethanol, cattle feed and bio-gas/bio-fertilizer - Patent 20050153410
Tags: biogas, bio-gas, bio-fertilizer, etanol on 2008-05-25 -All Annotations (0) -Cached -About more from www.freepatentsonline.com
George Chan sustainable - Pesquisa Google
PDF] The potentials of sustainable agriculture to reduce carbon dioxide ... Formato do arquivo: PDF/Adobe Acrobat - Ver em HTML for sustainable agro-forestry creates significant carbon stocks and sinks, and at the same ... Professor George Chan has spent years perfecting the system; ... www.indsp.org/pdf/SFSSSD.pdf - Páginas Semelhantes - Anotar isso Tags: pesquisa, biogas, integrated on 2008-05-25 -All Annotations (0) -Cached -About
Integrating Biogas, Confined Feedlot Operations and Ethanol Production
ntegrating Biogas, Confined Feedlot Operations and Ethanol Production By Mahendran Navaratnasamy, Lawrence Papworth – Agriculture Stewardship Division and James Jones – Bio-Industrial Development. Published by the Alberta Government, Agriculture and Food. Tags: biogas, etanol, integration on 2008-05-23 -All Annotations (0) -Cached -About more from www.thecattlesite.com
Stinky Tech: Street Lights in India Powered By Poop
Yes, you read it correctly: The street lights in the Indian town of Thiruneermalai are run on digested curry. As National Geographic describes it, the human waste from an area housing complex collects in a sump, where the methane gas produced by the "sludge" is used to operate a generator. This biogas produces 3,000 watts of electricity daily, enough to keep the town bright at night. And you thought ovens running on garbage were gross. A friend who lived there this past spring tells me it never smelled bad, but then again, he's been known to generate a fair share of biogas himself. (Just kidding, Gelf!) [National Geographic] Tags: stinky, biogas, video on 2008-05-20 -All Annotations (0) -Cached -About in list: videobioenergy more from gizmodo.com
Organic Power Ltd - contact us for more information on the Maltin System
desenho biopower Tags: Agroenergy, biogas, reactor on 2008-04-02 -All Annotations (0) -Cached -About more from www.organic-power.co.uk
* SD : Environment : Biogas technology: A training manual for extension
manual biogas technology Tags: Agroenergy, biogas, manual on 2008-04-02 -All Annotations (0) -Cached -About more from www.fao.org
* BlinkList Quick Start Page
bimasstraining manual Tags: Agroenergy, biogas, training on 2008-04-02 -All Annotations (0) -Cached -About more from www.blinklist.com
Beginners Guide to BIOGAS - Paul Harris, The University of Adelaide
biogas,www Tags: Agroenergy, biogas, internet on 2008-04-02 -All Annotations (0) -Cached -About more from www.ees.adelaide.edu.au
Ministério de Minas e Energia
| Formato do arquivo: PDF/Adobe Acrobat - Ver em HTML acionada a biogás para utilização em processos de aquecimento e. resfriamento em laticínios visando ... Agrener 2002 - 4º Encontro de Energia no Meio Rural; ... https:/.../internet/comissao/index/mista/orca/ppa/ppa%202000-2003/ppa_rel_aval/015_Minas%20e%20Energia.PDF |
Processo Inovado para Conversão de Biomassa Lignocelulósica em Álcool, Biogás e Fertilizante Natural
[PDF] PROCESSO INOVADO PARA CONVERSÃO DE BIOMASSA LIGNOCELULÓSICA EM ... Formato do arquivo: PDF/Adobe Acrobat - Ver em HTML PROCESSO INOVADO PARA CONVERSÃO DE BIOMASSA . LIGNOCELULÓSICA EM ÁLCOOL , BIOGÁS E. FERTILIZANTE NATURAL . Lincoln C. Teixeira. Pesquisador da Fundação Centro ... www.seeds.usp.br/pir/arquivos/ congressos/AGRENER2002 /pdf/0036.pdf - |
Online flash about energy from biogas
http://www.evernote.com/pub/pannirbr/Biodigester
see here
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Sizingbiodigesters.pdf (Adobe Portable Document Format - 62k)
posted by pannirbr Jul 26 2008, 6:46 PM EDT
Sizing biodigester Matematics
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