Archive for April, 2009

Biodiesel And Its Producing Alternatives

Sunday, April 26th, 2009
Daniel Roshard asked:


In a world where people rely heavily on diesel-powered engines to perform many functions for both agriculture and other known industries, it no longer comes as a surprise if there is a limited supply of derivatives of diesel fuels with traces of petroleum.

Besides the (over)exhaustion of reserves of petroleum fuels, improbability in petroleum sources and supply because of certain economic and political reasons inspired many to look for alternative resources for petroleum-based fuel sources like diesel.

You’ve heard of vegetable oil, animal fat, and recycled cooking oil being used as fuel nowadays. These are what you call Biodiesel.

From the word itself, biodiesel is an alternative to diesel fuel made from renewable or organic sources such as the ones already mentioned above. Biodiesel is produced by means of a reaction between an animal fat or vegetable oil and ethanol or methanol with a certain catalyst. Biodiesel appears as and used as either in its pure form or can be mixed with diesel to be utilized by diesel engines - a petroleum-based biodiesel. Both have yields of glycerin and biodiesel, which are chemically known as asters of methanol and ethanol.

The following presents the major advantages of using biodiesel:

1. It is non-hazardous and biodegradable.

2. It can readily be used in modern types of diesel engines.

3. It is a much more efficient as compared to fuel cells.

4. Thus, it can eliminate the huge allocation of reconstructing major fuel distribution factories and companies.

On the note of producing biodiesel extracts on a macro scale basis, two steps are usually considered:

1. Growing of alternative feed stocks.

Oilseed crops (and animal lipids) are well known sources of biodiesel because of their oil content.

Interestingly, recent programs have been funded to research on the feasibility of using algal species as feedstocks for biodiesel extracts. In fact, there are noted species of algae from which you can extract larger amounts of oil. The same species also grow at very fast rates so production would definitely be efficient. Moreover, most of these species use less water for cultivation, unlike oilseed crops.

Another advantage of using algae as a source of biodiesel is that the species also grow best in salty water, so farms could be built near the ocean without desalinating seawater.

With recent development regarding algae research, that concern is completely obliterated since it was noted that algae could survive in either a hot desert or within areas near waste streams.

Processing the feedstock into biodiesel. This step would be best accomplished by present oil refineries around the world, which are being converted to biodiesel refineries and by new companies building state-of-the-art plants.

Environmentally speaking, the use of biodiesel is basically not alarming. However, further researches regarding on biodiesel producing alternatives should be ventured upon to facilitate a more feasible large-scale biodiesel production.



Are you relieved now that Obama wants to create the Energy Corp?

Sunday, April 26th, 2009
Formnfunction asked:


I see thousands of young people off marching down the street in clever green uniforms doing, um, what?

What Engineering degree should I get?

Wednesday, April 22nd, 2009
o0_june26_0o asked:


I want to work with green energy. Like making solar and wind power. I’m unsure if I should major in Electrical Engineering or Mechanical Engineering. Can someone please help or offer another type of eng. I can major in?
I’m attending a community college. When I’m all done with school I really want to work with Green energy. Here are some AS-T Degrees my school offers in eng:
Engineering
Civil and Envrion
Computer
Electrical
Mechanical

Uk Boat Owners On The Look-Out For Biodiesel

Sunday, April 19th, 2009
Keith McGregor asked:


As November 1st 2008 approaches and the end to UK Red Diesel derogation, yacht owners are sharing an interest in alternative fuels one being Biodiesel. What are the benefits for boat owners and who will supply it?

Biodiesel refers to a non-petroleum-based diesel fuel made vegetable oils or animal fats.

There are many advantages of marine biodiesel as a marine fuel



Biodiesel serves as a drop-in replacement for petro diesel — no conversion necessary.

Biodiesel when used in boats causes less water pollution – there is less smoke and it is safer to store.

Biodiesel production uses a third less energy than petroleum diesel production.

High lubricity extends engine life

Higher cetane rating (46-62) almost always smoothes engine operation

Biodiesel can be blended with petroleum-based diesel at any ratio

Biodiesel contains essentially no sulfur or aromatics. Blends as low as B20 have reduced soot exhaust by 83%. Biodiesel removes deposits in tanks and fuel systems left by petro diesel.

Cheaper than the current red diesel prices of 88pence per litre even before the additional 54.94p in duty to be added from 1st Nov 2008.



Disadvantages



Doesn’t store as well as petro diesel

Possibility of blocked filters as it cleans the lines out and failed rubber seals as Biodiesel is a better solvent than mineral diesel

Blends of more than 5% (B5) to 95% (B95) may invalidate engine warranties

No Bio Diesel suppliers and blending facilities in marinas or boatyards at present.



Conclusion

Whilst at present there are no direct suppliers of marine biodiesel for boat owners, there are plans for the 2009 Portland Marina in Dorset to supply biodiesel and several marinas advise they have spare tank capacity to store another grade of oil.

A recent farm-based bio-diesel plant in North Wales has been reported as receiving interest from yacht and boat owners already. BML Biofuels, based at Llanfihangel GM, near Corwen is the first plant in Wales - and only the second in Britain - to extract oil by cold pressing oilseed rape (OSR). At the resulting cost 45p-55p/litre for the first 2,500 litres plus tax, it’s then no surprise BML Biofuels has already received maritime inquiries as far afield as Portsmouth since its official June opening.

With the higher cost or red diesel and a government under pressure to meet renewable fuel targets Biodiesel is likely to become a key ingredient in the refueling of motor yachts over the next decade.



Some of the Biodiesel Solvets Used in the Production of Biodiesel

Tuesday, April 14th, 2009
Muna wa Wanjiru asked:


What is a Biodiesel?

Biodiesel can be differentiated from the waste vegetable oils (WVO) or from the straight vegetable oils (SVO) which are used as fuels in some diesel vehicles. Biodiesel is a diesel that is equivalent to the processed fuel which results from the biological sources such as vegetable oils that can be used in unmodified diesel engine vehicles. Biodiesel is considered to be the fuel for future. It is an alternative fuel which is made from renewable resources.

Biodiesel is a very safe fuel which can be used in any diesel engine vehicle. While preparation of Biodiesel does not involve any harmful ingredients and also it does not produce any harmful byproducts. You can prepare Biodiesel at your own place. The ingredients to prepare Biodiesel are triglyceride fat or oil i.e. vegetable which is used in cooking, a strong base like sodium hydroxide (NaOH) or potassium hydroxide (KOH) and a relatively pure alcohol. Biodiesel is one of the cheapest, safest and cleanest fuels available.

Solvents used in a Biodiesel

Large numbers of solvents are used in a bio diesel plant. The types and the solvent used are basically dependent on the type of the plant. The solvents may also be various chemicals used. Alkyl esters are used in many ways. One of such way is it is used as a solvent in the Biodiesel and it also is used as chemical intermediates which is required for the formation of the detergents.

The pure form of Biodiesel can be used in its pure form. This Biodiesel may include unburned hydrocarbons and it also contains carbon monoxides. This is on of the most efficient way to use a Biodiesel especially when the biodegradability and non-toxicity are important factors.

The solvent properties of the bio diesel are at the highest intensity and they may also cause problems with the loosening of lacquer deposits in the tanks which have he lines and fuels. The problem of the solvents with the B100 is more or less a major concern when the use of the blends is made.

Some of the solvents generally used are hexane, isopropanol, methanol, isopropanol, oil etc People also produce Biodiesel from the alkali and acid process. Vegetable oil or the waste cooking oil is used for making Biodiesel. The acid based process which requires waste cooking oil is very economic allover.

Some of the projects which use extensive amount are mentioned below:

In Egypt a project has been undertaken which involves the use of the Jatropha as a potential Biodiesel feedstock. Another project in which the Biodisel Fuel from the non edible Vegetable oil is also under taken as a collaborative project by UNH Biodiesel group and the famous National Research Center (NRC), Cairo. Oil is used in large amount and it is extracted from the seeds. In these projects solvents like oil, methanol, and glycerol are extensively used. The chemical reaction of the solvents and the materials used can be future summarized in the following manner:- Oil + 3 Methanol [using NaOH or KOH catalyst] = 3 Biodiesel (Methyl Ester) + Glycerol. The main objective behind the research was to study the transesterification of the oil extracted to the Biodisel.



The Pro’s and Con’s of Biodiesel

Tuesday, April 14th, 2009
roosterbob asked:


Back then, we failed to realize the implications of our actions or the repercussions of a developed society highly dependent on petroleum and incessantly slave to the dictates of the mighty oil barons.

When automated vehicles were first introduced to the world, could anyone have anticipated the vast impact it will have to the economy? Who would have thought that combustion engines would turn out and be the backbone of today’s society? Decades ago, this idea seemed to be too great to fathom. However, its environmental impact was then, not recognized probably because of lack of foresight.



Biodiesel: Pros


•    Right here and now, what we have is biodiesel. This is an alternative for petroleum-based fuel that boasts a cleaner burn as compared to its expensive and environmentally unsound counterparts.

•    Biodiesel is a  renewable fuel source that stems from various resources including vegetable, canola, palm, and soybean oils.

•    In addition, this fuel releases far less nitrogen oxide, carbon monoxide, and unburned hydrocarbons. And since biodiesel processors convert vegetable oil, it is biodegradable and non-toxic. Do not forget the absence of sulfur products as oppose to petro-diesel. Given this lack of sulfur, biodiesel still possesses the required viscosity to fully lubricate diesel engines, which cannot be easily arrived at when dealing with low-sulfur petroleum products.

•    With the proper biodiesel equipment, the fuel output can be used in almost all diesel engines with modifications that are considered discretionary. Also, having a renewable fuel source will moderate our reliance on foreign oil corporations, or dare we say, the Middle East oil tycoons. If local farmers produce the needed raw material for our biodeisel, then we do not need to import oil because we can manufacture it ourselves, right?



Biodiesel: Cons


•    The fuel generated by biodiesel processors is an inherent solvent; meaning, sooner or later it will trigger the deterioration of various rubber components such as hoses and pumps. Though this can be easily replaced by visiting your local dealer. Sometimes extra tubing is included in a biodiesel expansion pack. This package is ideal if you plan to make batches and batches of biodiesel.

•    Also, this solvent characteristic will clean the injectors and the tank, as well as the fuel lines; the downside is that, blockage is inevitable. But this is not a reason to be worried. Just prepare yourself to a frequent filter change for the first couple tanks of biodiesel.

•    As for the gel point, biodiesel posts higher than that of its petroleum equivalent. This connotes that the former coagulates faster. But, this too, can be resolved by using an anti-gel additive.

•    The last issue lies on the recent introduction of biodiesel. This is fairly new and consumers may have a hard time locating biodiesel processors and kits. Well, a quick search in the World Wide Web is the solution for this one.

Whether you prefer it straight up or mixed (20% biodiesel to 80% petroleum diesel), so long as nature is unscathed, then it is all good. This alternative could be one of man’s greatest achievements. Though this time around, we need to take the time to become aware of its pluses and minuses, including the ideal method of generating, regulating, and utilizing this precious liquid we call biodiesel.



What will Transportation look like world wide in the year 2030?

Friday, April 10th, 2009
tawwy asked:


I am doing an assignment and would like to get other persons view to complete my study.

e.g somepersons may be of the opinion that we will have flying cars, or in simplier terms others think that by then we will have cars running without the use of fuel(eg green energy, water).
to travel via sea we will ahev more underground tunnels. just let me know what you think, seriouse answers only please

How to Make Biodiesel at Home and With Ease

Thursday, April 9th, 2009
Muna wa Wanjiru asked:


Biodiesel is the best alternative to petrol and petroleum products along with petroleum diesel. Its preparation from biodegradable substances is the primary reason for the diesel being called the Biodiesel. The Biodiesel can be used in its pure form, but is also adaptable to a blend with petroleum diesel.

The preparation of this Biodiesel is a very easy task and can be carried out even in a ranch or farm. Biodiesel can be made through numerous processes. It is easier to make a homebrew Biodiesel than to make it on a large scale or in a refinery. The following are some of the ways that are commonly used for preparing the Biodiesel at home.

1. With the use of Vegetable Oil:

Under proper conditions, waste as well as new vegetable oil can be used for the production of Biodiesel.

a. Preparation of Biodiesel using new vegetable oil:

For the preparation of Biodiesel, there are a lot of kits that are available on the market today. For making convenient Biodiesel, you must first study the kit carefully and must first make small batches of it. For the preparation of a home brew Biodiesel, you will need the following apparatus:

* A blender with Glass jar.

* A scale which weighs upto 0 to 50 gm with the nearest 0.1 gm.

* One quart jar.

* A hand pump;

* A liquid measuring cup;

* Methanol;

* Sodium Hydroxide;

Method:

Take proper care of your guarding equipments and then pour 1 cup methanol in the blender. Put 3.5 gm of sodium hydroxide and put it in the methanol in the blender. Blend the mixture for about 5 minutes. The blended mixture is a very strong base, called sodium methoxide. Please take care to avoid getting in contact with it. Pour one quart of new vegetable oil into the sodium methoxide and blend the mixture for 30 minutes at low speed. Let the mixture to set for around 8 hours at room temperature. The mixture after the setting is a mixture of the Biodiesel, which floats on top of a dark colored glycerol. You can then pump the light Biodiesel out with the help of the hand pump.

b. Preparation of Biodiesel using waste vegetable oil:

The waste oil is more acidic than the new oil because of the high amount of fatty acids that are present in it. You will have to first determine the amount of catalyst needed for the preparation with the help of titration. When you determine how much sodium hydroxide is required, you can follow the same method for the preparation of Biodiesel with the new vegetable cooking oil. The end result is also the same, but there is a white layer in between the diesel and the glycerol. It is the soap and is present if there is even a small amount of water present in the vegetable oil. To remove the oil you will have to warm the oil and when the water settles down, you can remove it by the hand pump or can just pour it over the top.



whats your favorite energy drink?

Wednesday, April 8th, 2009
Alyssa asked:


I think Red Bull and green Monster are the best. What about you?

What’s the big problem with green living?

Wednesday, April 8th, 2009
jessielee887 asked:


So I’m wondering why there is such a stigma hanging around the concept of “green living” mostly in reference to older generations who don’t like the whole “green” movement. In many situations natural materials prove to be more efficient and CHEAPER! For example, energy saving light bulbs, using hay insulation in houses, solar panels.. I just want some intellectual discussion… are most people too set in their ways or is it the cost scare?