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Latest Questions - Biomass Power Production
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Mesho wants to know microalgae and metal ions 5 months ago
Hi there, what is the metal ion which have toxic effect on microalgae? or what is the heavy metals that affecting algal growth?
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Joernst wants to know Algae fed-batch system 8 months ago
I really want to run some experiments growing algae heterotrophically or maybe mixotrophically. I have heard that cell densities as well as lipid content can get to very high levels. But I am having trouble finding good literature [technical or otherwise] to base experiments from. Could someone please help me out, or at least point me in the right direction
in Biomass Power Production Biodiesel Algae Fuels Biotechnology
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yeah right. i got confused. i would stick with a culture system without any carbon source than CO2.
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Narsi wants to know 100% biomass power plant? 10 months ago
http://www.businessgreen.com/bg/news/2194307/drax-aims-to-go-coalfree-after-biomass-subsidy-review - Drax going for a 100% biomass power plant? Is that what this article means?
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Samijun wants to know soap from microalgae 11 months ago
how can i found information about soap from micro algae or how we can make the soap with microalgae that have good point for body?
in Biomass Power Production Biobutanol Agri Waste Management Cleantech Education in Schools
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Robbes wants to know Im 18 and i want to do something! 1 year ago
Hi guys!
I've got some spare time during the days and im wondering if someone could give me a tip about what i can do at home to be "green". Talking about energy, cultivations and maybe bulding some sort of self sufficientness in my home. Im open for suggestions!!! and im ready to build! =Din Biomass Power Production Algae Fuels Offshore Wind Vertical Axis Wind Turbines Recycling Gardening Sustainable Homes and Communities
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Srividhya posted a question How effective is it to use Algae cakes in gasifiers for energy 1 year ago
We know that there are attempt to produce and better the fuel from algae. Has any one tried to used algae cakes left after extraction for use in the biomass gasifiers to produce energy?...Is it efficient to do this instead of using the algae mass as feed for humans and animals?
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The algae meal or cake can be used for just about anything. I'm sure most algae will have a high BTU compared to most kinds of biomass and even lignite coal even after oil extraction, but before you go throwing that stuff into a gasifier you might want to ask yourself if there is other sources of fuel around aside from algae that is less valuable and more available. Since anything from plastic to human solid waste can be gasified, it seems more prudent to use that highly nutritious algae meal for food, pharmaceuticals, vitamins,cosmetics, textiles, fabrics, paper fiber, building materials, bioplastics, alcohols and/or chemicals and just use the algae meal as a back up when needed for the gasifier. I think gasifiers should be used in tandem with algae systems but only to utilize the solid waste that algae cannot consume while feeding soluble waste to the algae including the co2 from the gasifier and toilet water from the house. Burning algae is way better than burning anything else for economic and environmental reasons, but with so many organisms to feed and so much available unneeded waste to burn, its just not economical to do so right now. However, I believe algae is the future and that it will be grown anywhere that there is pollution. So while regular gasification companies benefit from free garbage to burn for some time they will still eventually have to invest in growing algae to burn once all of the garbage is gone.
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Most of the renewable energy initiatives have huge capital investment and long gestation time than conventional modes. This effectively shunts away most of people to use these alternative methods.
Does providing govt subsidy is the only way to make people to use these technologies ?
Any comments...in Biomass Power Production Solar PV Onshore Wind Regulations, Policies and Incentives
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Mesho wants to know Sedgwick-Rafter chamber 1 year ago
Hi there. How many squares should I count in Sedgwick-Rafter chamber and how can I calculate the number of algal cells in 1 ml of sample?
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It all depends on how dense your sample is, how accurate you want to be, and what magnification you're using. Most SR cells don't have grid lines, so you must have that in your ocular lens. The best (most accurate) method would be to use an stage micrometer slide (eg http://www.tedpella.com/histo_html/2280-10.htm) and measure the length (and height) of your grid at a set magnification, and then determine how many of those squares "fill" your SR cell, which should be 50mm long x 20mm wide and 1mm deep = 1 ml (http://www.2spi.com/catalog/standards/sedgewick-rafter-counting-cell.shtml) Here's what I share w/ my students: Sample Collection Procedure Attach the 64um plankton net to a pole and holding the net away from the body, to the side, drag the net barely beneath the water’s surface for 100 meters. Take care not to drag the net on the bottom of the lake. Slosh the net up and down in the pond without submersing the mouth of the net in the water, to dislodge all the organisms that may be clinging to the inside of the net. Allow the excess water to drain out of the net. Carefully empty the contents of the collecting bottle into a labeled container. Add preservative to the container upon return to the laboratory.. Analysis Procedure In order to estimate the amount of plankton organisms in a lake, we count the amount in a sample of known volume, and then multiply by the volume of the lake. Stir the bottle of preserved plankton so that the plankton are momentarily uniformly suspended in the lake water. Using a syringe-pipette device, draw out 1 mL and discharge the water into a Sedgewick-Rafter Counting Chamber. Cover with a 22x50 mm cover slip. Before beginning the plankton counts as described below, scan your slide and familiarize yourself with the various types of plankton using the photographs and identification guides. Each class member will take one phytoplankton and one zooplankton count and then give their results to the phytoplankton and zooplankton teams. Phytoplanton count: With the microscope on the 100x magnification, focus on 3 random fields of view. For each view, use the illustrated tally sheet to identify and count the number of phytoplankton in the selected field. For filamentous algae like Spirogyra and Ulothrix, count each cell in the filament as individual cells. For colonies like Dinobryon and Anabaena, count each colony as one individual. Give these 3 counts to the phytoplankton group. Zooplankton count: With the microscope on the 32 or 40x magnification, focus on 3 random fields of view. For each view, use the illustrated tally sheet to identify and count the number of zooplankton in the selected field. Give these 3 counts to the zooplankton group. Calculation of # plankton/ml: Each plankton team will then total the counts for each type of plankton recorded and determine an average number of each type in a field of view. To get numbers per ml, multiply the average value by 431 for phytoplankton (at 100x), by 28 for zooplankton (32x), or by 86 for zooplankton (40x). Hope this helps. Good success, John PS Another useful ref. just now saw: http://www.vic.waterwatch.org.au/file/inform/Biological%20Surveys_Algae.pdf
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The DEO has a patent like this for sale right now. I read about it a few months ago but we are some ways off from comercialization.
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Mesho wants to know Aviod contamination with cynobacteria 1 year ago
hi, anybody has a protocol to purify my culture from cynobacteria contamination?
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Thanks for reply . Actually, I will try to cultivate Dunaliella on wastewater and evaluate the productivity .Do you have any idea around that? I Think it is more acceptable to use the biomass for biofuel than betacarotene or gycerol.Do you think so?
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Latest Discussions - Biomass Power Production
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Joshwolf shared a video My Algae Biodiesel Presentation 1 year ago
I am proposing a new solution to the algae biofuel industry. Using electrical stimulation, I have created biodiesel from algae for $0.96/gallon. Come view this presentation of my project
in Biomass Power Production Biobutanol Biodiesel Algae Fuels Biomass to Liquid Batteries Biodiversity Agri Waste Management Anaerobic Digestion of Waste Bioremediation Batteries for Electric Vehicles Biopolymers and Bioplastics Biotechnology Biomimicry
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great job. do u have any paper published about it?
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Weheritage shared a picture BPMfg. Bioreactor line 1 year ago
Three line make on unit that will produce 2.5M gallons per year of green fuel. http://www.aeon-fuels.com
Company : BioPower Manufacturing, LLC- View all 2 comments
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Greetings, how is the final stages in Yonkers, is Jim Paradise on site? This is the most awesome closed loop renewable fuels system system available. Regards Dominic Pawinski
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Donmichael posted a blog Clean Coal 1 year ago
Currently there are efforts underway to mitigate the emissions from coal firing plants by growing algae biomass which is then converted into fuel on sight or harvested and then exported to refineries. This has been going on for a few years now and this is a great idea and a currently proven and working model, except the fact that some of the originators of this business model failed to make the fuel production from the biomass cost competitive with petroleum extraction and processing. It makes sense because fossil fuels like coal and petroleum are decomposed plant and animal life that…
in Biomass Power Production Biodiesel Algae Fuels Agri Waste Management
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This begins to sound like a perpetual motion machine. The generate electricity by using algae grown from the C02 from coal fired power plants? I suggest a full energy in vs energy out analysis should be done before anyone spends a cent. There is sufficient data in Australia to show that using algae a basis for biodiesel comes out positive. But to talk about mopping up C02 from thermal power plants alone is to ignore the environmental; destruction, the gross waste of energy in delivery and the loss of lives ( I could go ). We are thinking about solving a problem by trying to fix it. We are using a century plus old system of creating and delivering energy. It is time to think SMALL and to look at ways of using distrubuted energy to its max. Leave the algae to where it works at its simplest and best. As a former director of an algal biotech company I see the world moving to a few things. Which technology "wins" to me is unimportant - the net gain - FUEL to drive agriculture is the goal. Without that we do not eat. I'm a pond man, a brine pond. I have no dount that raceways and reactors have their place but with strain selection and good husbandry, algal ponds with produce the lipid feedstock. Coal will be a valuable rersource in its own right, but NOT to burn! Its a chemically rich source that's worth saving and using to replace the feedtsock (OIL) that we consume at a rapid rate right now. Those days are numbered.
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Kkbiodiesel posted a blog A Fifth of Global Energy Could Come from Biomass Without Damaging Food Production 1 year ago
A new report suggests that up to one fifth of global energy could be provided by biomass (plants) without damaging food production. The report reviews more than 90 global studies. It has been produced by the Technology and Policy Assessment function of the UK Energy Research Centre (UKERC), which addresses key controversies in the energy field, and aims to provide authoritative and accessible reports that set very high standards for rigour and transparency.A debate has been raging about the role biomass could play in the future energy system: some say it could play a major role in fuelling the planet,…
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Gaya3 wants to discuss A fifth of global energy could come from biomass without damaging food production 1 year ago
A fifth of global energy could come from biomass without damaging food production - http://www.sciencedaily.com/releases/2011/11/111125161027.htm?utm_source=feedburner
in Biomass Power Production Sustainable Agriculture and Forestry
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Gaya3 wants to discuss Voting for 2011-12 50 Hottest Companies in Bioenergy : Biofuels Digest 1 year ago
Voting opens for 2011-12 50 Hottest Companies in Bioenergy : Biofuels Digest - http://biofuelsdigest.com/bdigest/2011/10/06/voting-opens-for-2011-12-50-hottest-companies-in-bioenergy/
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Kyzyl wants to discuss Researchers explore plankton’s shifting role in deep sea carbon storage - SF State News - San Francisco State University 1 year ago
Climate-driven changes in seawater could make it more difficult for a certain tiny plankton to do its big job of storing carbon in the deep ocean. - http://www.sfsu.edu/~news/prsrelea/fy12/009.html
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Kyzyl wants to discuss Sedimentation & centrifugation market will grow in 2015 on Environmental Expert 1 year ago
The world market for centrifuges, clarifiers, dissolved air flotation systems and hydrocyclones will grow from just over $6.3 billion in 2011 to $7.2 billion ... - http://www.environmental-expert.com/news/sedimentation-centrifugation-market-will-grow-in-2015-260358
in Biomass Power Production Biodiesel Algae Fuels Biomass to Liquid
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A look at what is needed for the biomass sector to grow and become a significant power producer across the country.
http://www.renewableenergymagazine.com/renewableenergy/magazine/index/pag/perfil/colleft//colright/perfil/tip/articulo/pagant/perfil/pagid/16946/botid/157/in Biomass Power Production Agri Waste Management Cleantech Government Policies and Regulations
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Go ahead, in the deeds, not in the words. God bless you.
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Akshaya wants to discuss Carrots and Sticks for Sustainable Biofuels 1 year ago
SWITZERLAND - In an independent report launched by a consortium of industry and non-governmental organisations, IUCN promotes an innovative policy approach to address the risk of indirect land use change through biofuel production. This involves encouraging and rewarding practices that proactively reduce this risk and penalising producers who take no action. - http://www.thebioenergysite.com/news/9710/carrots-and-sticks-for-sustainable-biofuels
in Biomass Power Production Biodiesel Cleantech Government Policies and Regulations
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Kyzyl wants to discuss `World`s first` biomass exchange to open in Rotterdam on Environmental Expert 1 year ago
What has been hailed as the world's first biomass exchange looks set to be launched in Rotterdam from next month, in response to soaring demand for wood chips ... - http://www.environmental-expert.com/news/worlds-first-biomass-exchange-to-open-in-rotterdam-259259
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I think this is a very good idea. In India, biomass prices have shot up by over 100% in the past one year owing to speculative and manipulative trading practices. A transparent exchange could make the whole thing more organized and less volatile
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Akshaya posted a blog German waste collection service provider, BSR Ruhleben starts a Biogas Plant 1 year ago
Berlin’s Senator for Health, Environment and Consumer Protection, Katrin Lompscher; Spandau district councillor Carsten-Michael Röding (Department of Building, Planning and Environmental Protection); and BSR CEO Vera Gade-Butzlaff attended the recent ground-breaking ceremony of a new biogas plant in Berlin being constructed by BSR Ruhleben to provide biomethane to power its fleet of compressed natural gas (CNG) powered refuse collection vehicles. Vera Gade-Butzlaff, CEO of BSR, says the new plant will be capable of displacing 2.5 million litres of diesel per year.
“About half of all collective kilometres of BSR in the future will be accomplished as climate-neutral. This usage also… -
A concise and easily understandable white paper on gasification, producer gas and syngas. One of the most frequently asked questions is the difference between producer gas and syngas...that gets well answered in this paper too - http://www.uaex.edu/Other_Areas/publications/PDF/FSA-1051.pdf ;
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OK, there is a lot of PR here, but some data as well...
"Recent third party testing and analysis of the University of Northern British Columbia's (UNBC) Nexterra Biomass Gasification System has concluded that the plant is one of the cleanest biomass facilities operating in North America.
The biomass gasification system was supplied and installed by Nexterra Systems Corp.
The Nexterra system, which provides heat to most buildings on UNBC's Prince George campus, underwent independent testing to assess the emissions for Particulate Matter (PM), Volatile Organic Compounds (VOC), Carbon Monoxide (CO) and Nitrogen Oxides (NOx).
Testing results showed that the Nexterra system generated emission levels that are extremely low for biomass energy systems and are equivalent to natural gas."
http://www.environmental-expert.com/news/nexterra-biomass-gasification-system-cleanest-biomass-in-north-america-254345 -
Green Energy Applications Guide
Specifying Gas Flow Meters in Green Energy and Pollution Reductions Applications
This guide is intended to provide you with a better understanding of the challenges and the solutions for traditional and alternative energy process controls.
http://www.globalprocessingenews.com/newsletter.asp?idNewsletter=116&idemail=47261&mailLogCode=667095&idList=1&strEmail=9B95D6E9D8C9DF729E95D7E8D8D9DDA19E5ED1D7E394DD9E -
Narsi says 1 year ago
The exhaust heat from a 250 kW biomass gasification power plant can provide (through a VAM) the equivalent of 95 T of refrigeration per hour...
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Mdcastillo1942 says 1 year ago
I'm looking for an effective & simple process of converting biomass to electricity for "small, isolated communities" (5- 15 Megawatts).
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Algaesmiles posted an update in the page The Algae Fuel Challenge 1 year ago
Challenge #1 - Which is the best algae strain?
The algal are selected based on productivity, and harvest ability, resistance to contamination, tolerance of high oxygen levels and temperature extremes.
Challenges
Prone to contamination
Low yields
Low oil content
Low starch content
Do not grow in specific environments
Genetic engineering is unproven for commercial algae fuel production.
Some of the efforts pursued in this area:
The Aquatic Species Program of the NREL (USA) did not specify any one species or strain to be the best, though they did conclude that the diatoms and secondly green algae were the most promising.
Research from Oilgae (www.oilgae.com) reveals that marine strains such as Nanochloropsis.salina, Dunaliella salina seems to be promising strains as far as biofuel production is considered. These strains are hypersaline, can withstand high temperature. Most importantly both these strains have high amounts of lipids as well as carbohydrates, making it suitable for both ethanol and biodiesel production.
Diatoms are responsible for 20% of the total global carbon fixation (Armbrust et al., 2004), suggesting favorable growth rates for biomass production.
Transgenic techniques are well established for several diatom species (Dunahay et al., 1995; Apt et al., 1996; Fischer et al., 1999; Zaslavskaia et al., 2000), and regulatory gene expression control elements have been identified (Poulsen and Kroger, 2005)
Dunaliella salina has several useful characteristics for large-scale biofuels production. It produces abundant lipids (Weldy and Huesemann, 2007), and because it has outstanding salt tolerance (from 0.1 M to near saturation), it can be grown under extreme conditions that could reduce the growth of possible contaminating organisms. The genome sequence of D. salina is currently being determined (estimated size 130 Mb), and transgenic strains have been reported (Li et al., 2007).
Some useful links to understand more about algae strain selection
(a) http://www.oilgae.com/ref/dir/ss/
(b) http://www.oilgae.com/club/category/details/2
(c) http://www.oilgae.com/blog/2010/08/algae-strain-selection-an-intensive-exercise.html
(d) http://www.powerplantccs.com/ccs/cap/fut/alg/alg_strain_selection.html
(e) http://bit.ly/nlzFGe
(f) http://www.springerlink.com/content/k856457u56365537/
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Will Botyrococcus braunii be a major diesel contributor? - http://www.oilgae.com/club/users/sumukhi/blogs/74
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Narsi says 1 year ago
Nice comparison of Gasification Vs Combustion for biomass power - http://tinyurl.com/3qdgyfb
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Narsi says 1 year ago
Carbon dating technique to aid energy from waste
A new use for carbon dating will aid the production of energy from wood and waste, said a UK bio-energy group after British regulatory approval of the new test.
Carbon dating is commonly used to estimate the age of ancient artifacts, exploiting the fact that a particular type of carbon disappears, or decays, at a fixed rate, so that the amount left behind clocks how much time has passed.
A recently adapted technique, developed by the Energy Research Center of the Netherlands, takes monthly samples of the carbon-14 in the smokestack of power plants.
It tallies that with the energy produced to estimate how much carbon dioxide in the flue gas came from burning ancient fossil fuels and how much from greener, younger fuels such as wood, crop waste and other so-called biomass.
The technology is already used in Belgium and the Netherlands, the NNFCC said. It may be a simpler way of disentangling green from coal-fired power than the alternative, which is to measure the amount of biomass and coal fuel fed into a furnace.
Interesting!
http://www.reuters.com/article/2011/07/14/us-energy-biomass-britain-idUSTRE76D3DO20110714
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Gaya3 5
months ago
Answer this question / Share a linkGenerally the order of metal toxicity which affects the algal species is Hg> Cu>Cd>Ag>Pb>Zn. Mercury being the most toxic metal affects the enzyme systems of the algae and inhibits their functions. Copper is used to control the algal blooms in fresh water. The extent of toxicity depends on the ionic content or free Cu2+ ions available in the algal culture and not the total copper concentration.