Hi – on Tuesday I have my GCSE biology exam and one of the topics is about biogas and biofuels. Am I correct in saying biogas is made by fermentation of organic compounds. Microorganisms anaerobically respire to break up these compunds to make an ethanol – based gas? I know I am partly there but I need help to get it completely please! Thank you!
http://www.youtube.com/watch?v=53I6aLjWVE4&list=PLsorq7UsrfYuE4IpM28MJxG7UUf0W0wpc&index=17
this is a video link that should help, the person also does lots of videos that cover hold B3 specification and the rest of the gcse science for AQA
youtube-myGCSEscience
I had some chemistry homework on how algae can be used to make biofuels. However I don’t know the answer to the last question so an answer is much appreciated:
Processes such as the one described in the article are not yet widely used. Suggest some of the problems that engineers may encounter in trying to get the systems to work.
Getting enough sunlight to the algae, requires thin layer and large surface area. The sunlight makes the algae too hot. The flue gas makes the algae too hot. The algae may get too cold at night. If you add the hot flue gas only from midnight to 10 am, how do you dispose of, or store, or cool, the flue gas 10 am to midnight ? Worse less flue gas is likely available midnight to 7 am and the flue gas arrives cooler as it is moving though the pipe slower and the ambient temperature is lower. The
above heat and light problems are worse in June, July, December and January = possibly you need to shut down the facility for these 4 months each year.
The water needs nutrients added = fertilizer. The water builds up chemicals from the flue gas that are toxic to the algae. The toxic water needs to be purified, before it can be dumped in a nearby dry stream bed/ the fertilizer needs to be replaced = probably cannot be economically separated from the toxins. Gas turbine exhaust is likely cooler and has less toxins than coal fired flue gas. Gas turbines are rarely operated midnight to 7 am. The percent of carbon dioxide is about half in gas turbine exhaust compared to coal flue gas, but enough water vapor is likely added to the algae to produce a surplus of water, between times when toxic water disposal is necessary. For a large facility, we may need to store a million gallons of water for the next water replacement. Water is scarce, in locations with the most sunlight, such as New Mexico. Coal flue gas has about half as much water vapor and we don’t need as much as it has double or more the carbon dioxide. Details like these, likely make the final products too costly to compete on the open market. Neil
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azzahra khairunnisahttp://gdata.youtube.com/feeds/api/users/nizhaichaEducationMikro Alga Bahan Baku Biofuel
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Wechselland Rally 2013: Bioethanol Racing: Gerwald Grössing / Sigi Schwarz
Mitsubishi Lancer Evo IX R4
Video: Marc Neugebauer
Musik: Popa Chubby, www.popachubby.com
www.gerwaldgroessing.at / www.sigischwarz.at
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Bio Gas pit 2000 liters on floating & 6 half drum fixed, It produce like 3 LPG tanks (11 kls.) in 4 days. Ages 3-4 yrs old.before the old pit can’t work, co’z of leaks in the concrete. we broke it and converted on this design. it so simple and easy to maintain. use it to prevent climate changes.
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Más información en http://www.subrayado.com.uy
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I have a biology exam in a few weeks and i need to understand the production of biogas. can you give me the most simple description?
thank you
I’m not looking to make it! i dont understand what it is!
organic materials decompose releasing methane, natural gas
leaves, vegetable matter, animal matter, etc decompose due to bacteria, molds, fungi etc
algae can produce gas
cows can burp gas
I was wondering if it’s possible to buy commercial grade algae bio fuel in BC, specifically Vancouver. I need an algae bio fuel for a chemistry experiment where I’m trying to demonstrate a plausible alternate fuel and compare it to what we currently have and my alternate fuel idea would be algae biofuel. I’m ideally looking for a place I could go visit and purchase some commercial grade, "burn ready" algae fuel in the Vancouver area. Thanks!
I don’t think you can buy algae biofuel anywhere except as a research commodity. I don’t think, it’s produced commercially anywhere.
Do some Googling, but don’t be surprised if you don’t find anything.
DK
at Shell, FuelSave Unleaded Gasoline contains 10% bioethanol (which the government requires). Is it bad for my engine or my fuel tank? I heard bioethanol rusts your fuel tank if the car has not been used for some time, also it releases a bad smell.
Can I switch to pure gasoline (VPower Nitro+) with no mixture @ 97-100 octane (if that’s good for my car) ’12 Nissan Grand Livina 1.8L Highway Star
and VPower Nitro+ Diesel for my ’95 Isuzu Trooper?
I just wanna know which is better 
My 2012 Gasoline powered car’s manual says "use UNLEADED REGULAR Gasoline with at least 91 octane"
I don’t know if V Power Nitro+ is a regular or premium..
YES bio ethanol is bad for cars, it will turn into water if left sitting too long
bio ethanol (GMO CORN) is also bad for the planet,
where have all the bees gone ?
Chemtrails pollute the sky yet EPA not complaining about that…
research Agenda 21