Negatives of Algae bio diesel
#1
Negatives of Algae bio diesel
First off, I'm a supporter of Algae bio diesel and all bio diesel research
Here's my story, I'm a in CX debate and district is in a few weeks and its already matching up that my team is going to be going head up against an old enemy team. Anyhoo after some scouting I've found out that their case is to do some smudging of the DOE budget at allocate 1 billion dollars into bio diesel research. Generally these hard core debates between two good teams end up debating small stupid details and don't involve the actual plan at all. This year I am going to ram their plan head on because I know they don't know anything about bio-diesel.
So, here's my question can ya'll help me out and give me any and all negatives associated with it. Higher gelling temps or anything like that?
Here's my story, I'm a in CX debate and district is in a few weeks and its already matching up that my team is going to be going head up against an old enemy team. Anyhoo after some scouting I've found out that their case is to do some smudging of the DOE budget at allocate 1 billion dollars into bio diesel research. Generally these hard core debates between two good teams end up debating small stupid details and don't involve the actual plan at all. This year I am going to ram their plan head on because I know they don't know anything about bio-diesel.
So, here's my question can ya'll help me out and give me any and all negatives associated with it. Higher gelling temps or anything like that?
#3
#4
Biodiesel in general is a winner.
Algal Biodiesel is a double win because it does not affect food crops, as plant based BD can.
The one negative, and this is BD in general not specific to algal BD, is a slight increase of NOx emissions. NOx is a generic term for a group of nitrogen oxygen compounds that are formed during combustion, it is a pollutant. The EPA has a mandate to reduce NOx emissions and work is proceding on developing a method to do that. One promising technique involves extracting hydrogen from fuel before it is burned then injecting this hydrogen into the exhaust stream under specific conditions the result is Nitrogen and water. Here is a link to a page on the subject
Nox reduction system for diesel engines, using hydrogen selective catalytic reduction invention
You may have to copy and past to get this link to work.
There are other techniques being worked on.
While there an increase in NOx from use of BD virtually all other pollutants are decreased, including CO2 and sulpher compounds.
Algal Biodiesel is a double win because it does not affect food crops, as plant based BD can.
The one negative, and this is BD in general not specific to algal BD, is a slight increase of NOx emissions. NOx is a generic term for a group of nitrogen oxygen compounds that are formed during combustion, it is a pollutant. The EPA has a mandate to reduce NOx emissions and work is proceding on developing a method to do that. One promising technique involves extracting hydrogen from fuel before it is burned then injecting this hydrogen into the exhaust stream under specific conditions the result is Nitrogen and water. Here is a link to a page on the subject
Nox reduction system for diesel engines, using hydrogen selective catalytic reduction invention
You may have to copy and past to get this link to work.
There are other techniques being worked on.
While there an increase in NOx from use of BD virtually all other pollutants are decreased, including CO2 and sulpher compounds.
#7
I thought you were just interested in negitives.............
Some good info here: First Algae Biodiesel Plant Goes Online: April 1, 2008 : Gas 2.0
Some good info here: First Algae Biodiesel Plant Goes Online: April 1, 2008 : Gas 2.0
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#9
#10
I have a chemist friend who has been in VO industry for over 25yrs. He is concerned about the potential it may not smell very good. The algae has alot of similarities to fish oil - chemically. The stability of ALL vegetable-based oils is a big issue. The biodiesel industry is struggling to extend the shelf-life of its fuel. Currently, no bio-d at the pump meets the ASTM standards for fuel. This is largely why no OEM recommends more than a B5 blend in their vehicles.
#11
A little correction here if B5 is blended with good quality BD, meets ASTM D6751 for blend stock, it will meet the ASTM standard for petro diesel ASTM D975.
As of June last year the ASTM International D02 Main Committee approved a change to ASTM D6751 that provides a standard for B6 thru B20.
You will have to give the EMA (Engine Manufacturers Association) a little time to evaluate it and ensure their engines wont have problems with it.
By the way the OEM is only responding to EMA recommendations with their B5 limits. That limit was there because there was no standard for BD other than that for blending stock.
#12
A little correction here if B5 is blended with good quality BD, meets ASTM D6751 for blend stock, it will meet the ASTM standard for petro diesel ASTM D975.
As of June last year the ASTM International D02 Main Committee approved a change to ASTM D6751 that provides a standard for B6 thru B20.
You will have to give the EMA (Engine Manufacturers Association) a little time to evaluate it and ensure their engines wont have problems with it.
By the way the OEM is only responding to EMA recommendations with their B5 limits. That limit was there because there was no standard for BD other than that for blending stock.
As of June last year the ASTM International D02 Main Committee approved a change to ASTM D6751 that provides a standard for B6 thru B20.
You will have to give the EMA (Engine Manufacturers Association) a little time to evaluate it and ensure their engines wont have problems with it.
By the way the OEM is only responding to EMA recommendations with their B5 limits. That limit was there because there was no standard for BD other than that for blending stock.
#13
There are several relatively easy techniques to reduce the polymerization of BB.
1 Store it in a tank lined with non metallic material.
2 Store it under a head of nitrogen
3 Do not heat any more than necessary after processing.
4 Eliminate potential bonding sites by hydrogenating or use saturated oils as input.
These steps will not totally eliminate polymerization but will significantly reduce it.
1 Store it in a tank lined with non metallic material.
2 Store it under a head of nitrogen
3 Do not heat any more than necessary after processing.
4 Eliminate potential bonding sites by hydrogenating or use saturated oils as input.
These steps will not totally eliminate polymerization but will significantly reduce it.
#14
There are several relatively easy techniques to reduce the polymerization of BB.
1 Store it in a tank lined with non metallic material.
2 Store it under a head of nitrogen
3 Do not heat any more than necessary after processing.
4 Eliminate potential bonding sites by hydrogenating or use saturated oils as input.
These steps will not totally eliminate polymerization but will significantly reduce it.
1 Store it in a tank lined with non metallic material.
2 Store it under a head of nitrogen
3 Do not heat any more than necessary after processing.
4 Eliminate potential bonding sites by hydrogenating or use saturated oils as input.
These steps will not totally eliminate polymerization but will significantly reduce it.
#15
What you describe sounds like problem that is specific to trucks that burn primarily SVO and switch to BD for startup/shutdown.
If you run BD only you should not experience such difficulty, as proven by the many folks that have been running strictly B100 for years.
The problem of keeping a small amount of BD in a very hot, polymerization inducing environment, for an extended period of time would not exist. The fact that your problem is limited to the BD side of your fuel system supports that conclusion because VO is every bit as likely, possibly even more so, to polymerize as BD.
In you position I think the decision to run straight #2 in the non VO circuit is correct.
If you run BD only you should not experience such difficulty, as proven by the many folks that have been running strictly B100 for years.
The problem of keeping a small amount of BD in a very hot, polymerization inducing environment, for an extended period of time would not exist. The fact that your problem is limited to the BD side of your fuel system supports that conclusion because VO is every bit as likely, possibly even more so, to polymerize as BD.
In you position I think the decision to run straight #2 in the non VO circuit is correct.
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