IGEM:MIT/2007/Red Team: Difference between revisions

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*450 gallons
*450 gallons
*$.44/gal
*$.44/gal
*http://www.sears.com/sr/javasr/product.do?BV_SessionID=@@@@1156703190.1184166024@@@@&BV_EngineID=ccdjaddlglfkikecefecemldffidfmm.0&vertical=SEARS&sid=I0093600010003900085&pid=04238156000
*[http://www.sears.com/sr/javasr/product.do?BV_SessionID=@@@@1156703190.1184166024@@@@&BV_EngineID=ccdjaddlglfkikecefecemldffidfmm.0&vertical=SEARS&sid=I0093600010003900085&pid=04238156000]

Revision as of 09:28, 12 July 2007

Cost Analysis

  • US Dept. of the Interior; Bureau of Reclamation Hg and Cd Cost sheet [1]


Large Scale

Osmosis

Ion Exchange

http://www.remco.com/ix.htm Strong Acid Cation exchanger Works best with Cadmium...not mercury Chelation for Hg is 1867x stronger than Cd...would require 2 times

Lime Softening

In lime softening, hydrated lime that is, calcium hydroxide, Ca(OH)2is added to water to precipitate calcium carbonate before the water is used. The amount of lime required will depend on hardness levels. The process requires a settlement period and its effectiveness is governed by the pH of the water. Lime softening is a complex process and therefore is usually limited to situations where constant monitoring is available.


Small Scale

Reverse Osmosis

  • $200
  • 450 gallons
  • $.44/gal
  • [2]
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