Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Carbon Nanotubes Powerpoint


Published on

Carbon Nanotubes Presentation for 2010 CT Expo

Carbon Nanotubes Powerpoint

  1. 1. nSpring<br />H20 &Co.<br />Carbon Nanotube Membranes<br />
  2. 2. Introduction<br />3.4Billion<br />One third of world’s population has water shortages, and this is expected to double by 2025<br />
  3. 3. Introduction (cont.)<br />H₂O & Co. has developed a more cost efficient way to remove chemicals and infectious agents from water.<br />
  4. 4. Carbon nanotubes<br />Small rolled sheets of graphite, as strong as steel<br />Lattice pattern<br />Less than one nm<br />Single-walled (SWNT) and multi-walled (MWNT)<br />
  5. 5. Membrane Composition<br />Electrochemical etchingerodes metalsand forms a porous layer in the Silicon. Iron oxide is placed on top.<br />It is exposed to C2H4 (ethene) at high temperatures. The tubes grow verticallyand tightly. Exposure timedetermines the length ofthe nanotube.<br />Silicon Nitride is addedbetween gaps to stabilize.<br />
  6. 6. How it Works<br />Negativecarboxylicsdraw water through the tube.<br />Ions cannot fit throughthe 1 nm tubes<br />At .93 nm in diameter,95% of ions are filtered out of water<br />Up to 100 times faster<br />
  7. 7.
  8. 8. How it Works (cont.)<br />Also filters out bacteria and viruses<br />When passed through a nanotube, infectious agents will be trapped and unable to pass through to the other side.<br />
  9. 9. Finance<br />SWNTs: $95 per gram<br />MWNTs: $15 per gram<br />Composite: $35 per gram<br />2-3 year life span<br />Cost 2-7 cents per day in use<br />Average of 2 cents less expensive than other filters<br />$7.30 cheaper per year<br />$25 per membrane<br />(“Water Filtration Comparisons & Reviews” 3)<br />
  10. 10. Finance (cont.)<br />(“Water Filtration Comparisons & Reviews” 3)<br />
  11. 11. Finance (cont.)<br />Global market for nanofiltration membranes: CAGR 26.1%<br />Water treatment sector: CAGR 27.4%<br />More regulations protecting environment<br />
  12. 12. Finance (cont.)<br />Rent<br />Building – $10,000 a month<br />Equipment – $20,000 a month<br />Materials - $3,000 a month<br />Miscellaneous - $1,000 a month<br />Other<br />Accounting - $10,000<br />Employees (8) - $25,000 every six months<br />Total (6 Months) = $414,000<br />
  13. 13. Conclusion<br />Provides clean, desalinated, water.<br />Filters out bacteria and viruses<br />Cheaper price.<br />In demand<br />Faster filtration<br />
  14. 14. Works Cited<br />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. <>.<br />Ball, Philip. "Nanoplumbing: More than Just a Pipe Dream." New Scientist 19 Jan. 2009. Print. <br />Bischoff, Brian L. "Membranes and Their Uses." Inorganic Membrane Technology Laboratory. Oak Ridge National Laboratory, 9 Oct. 2002. Web. 20 Dec. 2009.<br />Curtis, Rick. "OA Guide to Water Purification." Princeton, Mar. 1998. Web.  <>. <br />Gagliardi, Margareth. "Nanotechnology." BBC Research. BBC, Sept. 2007. Web. 15 Dec. 2009. <>. <br />Kalaugher, Liz. "Carbon Nanotube Membrane Filters Fast." IOP Publishing, 18 May 2006. Web. 22 Apr. 2010. <>. <br />Kaul, Steven. "Nanofiltration." Tahan. University of Wisconson-Madison, 2005. Web. 22 Dec. 2009. <>. <br />"Morphology of the Sphagnopsida." University of California Museum of Paleontology. Berkeley Natural History Museums, 1994. Web. <br />Olsen, Stefanie. "Nanotubes Squeeze Salt From Water." CNET News. CNET News, 22 May 2006. Web. 23 Dec. 2009. <>. <br />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. <>. <br />Stark, Anne M. "Nanotube Memranes Offer Possibility of Cheaper Desalination." Lawrence River National Laboratory Public Affairs. 17 Oct. 2007. Web. 22 Apr. 2010. <>. <br />"Water Filter Comparisons & Reviews." Water Filter Comparisons - Compare Top Rated Water Filters. Web. 06 May 2010. <>.<br />