## SAMDevelopment's Blog |

#### OK, here is the answer to question # 1 of Monday Math.

Q. How big are the bio-reactors?answer using just the info on the posts.

25,000 scfm CO2

X .12342 conversion factor (CO2 gas to CO2 lbs.

=3,085.5 lb/min CO2

./. 2.8 lbs. CO2 = 1 lb algae ( ./. means divide)

=1,101.9 lbs. dry algae per minute.

X 454 grams per lb.

=500,291.7 grams dry algae /min

X 1440 min. per day

=720,419,040 grams per day

./. 113.4 grams per day per gal

=6,352,901 gals in reactor capicity to convert 25,000 cfm of CO2 per minute 24/7/365!

There it is in 8th grade math.!!

Fri May 21 2010 01:50:24 AM by SAMDevelopment
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#### Monday Math Contest

Dear FOA (Friends Of Algae)Is anyone out there working on this problem?

If you need a little help to get started,

ask a question, please.

Alan Schaefer aka SAMDevelopment

Thu May 20 2010 05:05:37 AM by SAMDevelopment
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#### Monday Math.....Gross revenues from 25,000 SCFM

Dear FOA (Friends Of Algae)Here is a contest for the week of May 17. Using the numbers I gave you a week ago in "Algae Math and More Conversions" let's figure out what the GROSS Returns

would be for a CO2 emitter of 25,000 SCFM.

Here are some assumptions:

This medium size CO2 emitter will discharge 25,000 scfm.

We will be working with a very rapidly growing GM algae.

This algae will be harvested at 50% oil and 50% meal.

This algae will produce 30 grams of dry matter every 24 hours per liter capacity of the bioreactor.

The oil will sell for $80 per barrel. The meal will

sell for $300 per ton. (1 ton = 2,000 lbs.)

Ansewer these questions:

1. How big (in gallons) does the bioreactor(s) have to

be to convert this amount of CO2 to biomass?

2. What is the production of algae (dry weight is assumed when we talk about algae, i.e. "30 grams per liter capicity") Give your answer in lbs. per minute.

Tons (1 ton = 2,000 lbs.) per minute, tons per day and tons per year.

3. Give your answer in $ per minute, $ per hour and $ per year. Remember these are GROSS dollars, we have NOT figured out what the production costs will be.....yet.

Remember to use the formulas in the previous posts.

Good Luck. Lets have some answers by Wed. or Thurs.

Alan Schaefer and Annie (my Boarder Collie Puppy)

#### More conversions........

1,440 min./dayGoal; Production per day per liter capacity = 30 grams dry algae per Liter.

3.78 L/gal X 30 gr/L = 113.4 grams/gal/day

1 tonne cement = 1.25 tonnes of CO2

1 ton of coal when burned = 2 tons CO2

1 megawatt-hour of coal produced energy = .91 tonnes CO2

Do you have any to add to this list????

Alan Schaefer aka SAMDevelopment

Wed May 12 2010 02:48:32 PM by SAMDevelopment
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#### Algae math ........do these #

Here are some conversions that I have come across and they have come in handy when 'working-the-numbers".3.78 Liters = 1 gallon

7.48 gallons = 1 cu.ft.

454 grams = one lb.

1kg. = 2.2046 lbs

2,230 lb. = 1 metric ton

2,000 lb. = 1 ton

2.8 lbs of CO2 = 1 lb. dry algae

(this varies from 1.7 to 2.8, I use 2.8 in my numbers.

2.8 tons CO2 = 1 ton dry algae

1 lb CO2 = 8.741 scf

1 gal CO2 = 74.04 SCF

1 gal CO2 = 8.47 lbs.

Cu. ft. CO2 X .12342 = lbs. CO2

Lbs. CO2 divide by .12342 = cu. ft. CO2

CO2 weighs 1.96 kg. per 1 cubic meter

1 cu. meter of volume can hold 1.96 kg. CO2

1 cu. ft. = 0.02831 cu. meter

1 cu. meter = 35.314 cu. ft.

What do you think?? I have more.

Wed May 12 2010 02:46:03 PM by SAMDevelopment
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#### Deirdre....here I am.

I live in Bloomsdale, Missouri. We are about 60 miles south of St. Louis. Our town is so small we don't have a town drunk..........we have to take turns!!!!
Sat May 08 2010 05:54:15 PM by SAMDevelopment
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#### LED news?

Dear F.O.A. (Friends Of Algae)What is the latest news, research, in the field of LED lighting technology as it might relate to algae production?

If we are to have a significant impact on global warming by slowing down the use of fossil fuel emissions of CO2

then algae photobioreactors need, must, operate 24/7/365.

Let's hear what you have heard about new, flashing LED lights.

SAMDevlopment aka Alan Schaefer

www.schaeferbioengineering.com

#### A case study against solar photo-bio-reactors

http://www.nanostring.net/Algae/CaseStudy.pdfThe above link is worth serious study. It is obivious

that the author is leaving many expenses out of his caculations so taking that into account what do you think

of his conclusions????????????

SAM

Sun April 25 2010 07:06:09 PM by SAMDevelopment
algae | solar | economics

#### Toxic materials?

Can anyone here on this blog add to a list I have startedthat includes materials/chemicals that may be present in bioreactor building materials, which may be toxic, to some degree, for algae?

SAM

Mon April 05 2010 05:12:10 AM by SAMDevelopment

#### Bio-reactor building materials that may show some toxic properties....

Dear FOA....Friends Of AlgaeHas any research been done on the possible toxic properties of building materials that might be used in building a closed bioreactor? I have heard that PVC

plastic pipe can out-gas clorine and algae don't like that. Do you have any ideas?

How about a list of toxic materials and chemicals?

Give each substance a rating on a scale of 1 to 5.

One being mildly disagreable and five = very sick algae!

Thank you, SAM

Mon April 05 2010 05:14:25 AM by SAMDevelopment
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