carbon nano tubes power point

8/3/2019 Carbon Nano Tubes Power Point

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H20 &Co.

Carbon Nanotube Membranes


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Introduction3.4 Billion

One third of worldspopulation haswater shortages, andthis is expected todouble by 2025


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Introduction (cont.) HO & Co. has developed a more cost efficient way to

remove chemicals and infectious agents from water.


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Carbon nanotubes Small rolled sheets of graphite, as strong as steel

Lattice pattern

Less than one nm Single-walled (SWNT) and multi-walled (MWNT)
http://images.google.com/imgres?imgurl=http://www.aip.org/png/images/ando.jpg&imgrefurl=http://www.aip.org/png/2003/186.htm&usg=___f1TwJmiqBZdQlcTcDVlYtJcVQU=&h=453&w=450&sz=75&hl=en&start=4&um=1&itbs=1&tbnid=504WR2VDD7Ga-M:&tbnh=127&tbnw=126&prev=/images?q=multiwalled+carbon+nanotubes&um=1&hl=en&sa=N&tbs=isch:1


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Membrane Composition Electrochemical etching erodes metals and forms a

porous layer in the Silicon. Iron oxide is placed on top.

It is exposed to C2H4 (ethene) at high temperatures.The tubes grow verticallyand tightly. Exposure timedetermines the length of

the nanotube. Silicon Nitride is added

between gaps to stabilize.


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How it Works Negative carboxylics draw water through the tube.

Ions cannot fit through

the 1 nm tubesAt .93 nm in diameter,

95% of ions are filteredout of water

Up to 100 times faster


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How it Works (cont.)Also filters out bacteria and viruses

When passed through a nanotube, infectious agents will betrapped and unable to pass through to the other side.


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Finance SWNTs: $95 per gram

MWNTs: $15 per gram

Composite: $35 per gram 2-3 year life span

Cost 2-7 cents per day in use

Average of 2 cents less expensive than other filters $7.30 cheaper per year

$25 per membrane

(Water Filtration Comparisons & Reviews 3)


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Finance (cont.)COMPANY COST OF FILTRATION PER1000 GALLONS OF

COMPOUNDS

AVERAGE % OF REMOVAL

OF THE GOVERNMENTS

TOP 11 DANGEROUS

COMPOUNDS

Brita $273.91 22%

Everpure $229.00 26%

Kenmore $198.99 78%PUR $299.59 44%

nSpring (us) $70 95%(Water Filtration Comparisons & Reviews 3)


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Finance (cont.) Global market for

nanofiltrationmembranes: CAGR26.1%

Water treatmentsector: CAGR27.4%

More regulationsprotectingenvironment


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Finance (cont.) Rent

Building $10,000 a month

Equipment $20,000 a month Materials - $3,000 a month

Miscellaneous - $1,000 a month

Other

Accounting - $10,000 Employees (8) - $25,000 every six months

Total (6 Months) = $414,000


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Conclusion

Provides clean,

desalinated, water. Filters out bacteria

and viruses

Cheaper price.

In demand

Faster filtration


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Works Cited Ahalya, N., T. V. Ramachandra, and R. D. Kanamadi. "Biosorption of Heavy Metals." Research Journal of Chemistry and Environment 7.4 (2003).

Energy and Wetlands Research. Centre for Ecological Sciences. Web. 1 Dec. 2009..

Ball, Philip. "Nanoplumbing: More than Just a Pipe Dream."New Scientist 19 Jan. 2009. Print.

Bischoff, Brian L. "Membranes and Their Uses." Inorganic Membrane Technology Laboratory. Oak Ridge National Laboratory, 9 Oct. 2002. Web.20 Dec. 2009. http://www.inorganicmembranes.info/uses.html.

Curtis, Rick. "OA Guide to Water Purification." Princeton, Mar. 1998. Web. .

Gagliardi, Margareth. "Nanotechnology." BBC Research. BBC, Sept. 2007. Web. 15 Dec. 2009. .

Kalaugher, Liz. "Carbon Nanotube Membrane Filters Fast."Nanotechweb.org. IOP Publishing, 18 May 2006. Web. 22 Apr. 2010..

Kaul, Steven. "Nanofiltration." Tahan. University of Wisconson-Madison, 2005. Web. 22 Dec. 2009..

"Morphology of the Sphagnopsida." University of California Museum of Paleontology. Berkeley Natural History Museums, 1994. Web.

Olsen, Stefanie. "Nanotubes Squeeze Salt From Water." CNET News. CNET News, 22 May 2006. Web. 23 Dec. 2009. .

Srivastava, A., O. N. Srivastava, S. Talapatra, R. Vajtai, and P. M. Ajayan. "Carbon Nanotube Filters."Nature Materials 3 (2004): 610-14. Web. 15 Apr. 2010..

Stark, Anne M. "Nanotube Memranes Offer Possibility of Cheaper Desalination." Lawrence River National Laboratory Public Affairs. 17 Oct. 2007.Web. 22 Apr. 2010. .

"Water Filter Comparisons & Reviews." Water Filter Comparisons - Compare Top Rated Water Filters. Web. 06 May 2010..

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