Carbon Nanotubes Powerpoint

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Carbon Nanotubes Presentation for 2010 CT Expo

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  • (Ben Corry, Journal of Physical Chemistry B)
  • 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. <http://wgbis.ces.iisc.ernet.in/energy/water/paper/biosorption/biosorption.htm>.<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. http://www.inorganicmembranes.info/uses.html.<br />Curtis, Rick. "OA Guide to Water Purification." Princeton, Mar. 1998. Web.  <http://www.princeton.edu/~oa/manual/water.shtml>. <br />Gagliardi, Margareth. "Nanotechnology." BBC Research. BBC, Sept. 2007. Web. 15 Dec. 2009. <http://www.bccresearch.com/report/NAN045A.html>. <br />Kalaugher, Liz. "Carbon Nanotube Membrane Filters Fast." Nanotechweb.org. IOP Publishing, 18 May 2006. Web. 22 Apr. 2010. <http://nanotechweb.org/cws/article/tech/24922>. <br />Kaul, Steven. "Nanofiltration." Tahan. University of Wisconson-Madison, 2005. Web. 22 Dec. 2009. <http://www.tahan.com/charlie/nanosociety/course201/nanos/SK.pdf>. <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. <http://news.cnet.com/Nanotubes-squeeze-salt-from-water/2100-11395_3-6075309.html>. <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. <http://www.cs.duke.edu/brd/Teaching/Bio/asmb/Papers/NMR/Residual-dipolar-coupling/scNMR/nmat1192.pdf>. <br />Stark, Anne M. "Nanotube Memranes Offer Possibility of Cheaper Desalination." Lawrence River National Laboratory Public Affairs. 17 Oct. 2007. Web. 22 Apr. 2010. <https://publicaffairs.llnl.gov/news/news_releases/2006/NR-06-05-06.html>. <br />"Water Filter Comparisons & Reviews." Water Filter Comparisons - Compare Top Rated Water Filters. Web. 06 May 2010. <http://www.waterfiltercomparisons.com/water_filter_comparison.php>.<br />

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