Bone Char in Removal of Fluoride

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We would like to remove fluoride, using bone char filters, but hope for observations on such issues as, 1) lifetime of the bone char material, 2) requirements of cleaning this, and how frequent, 3) residence time of fluoride, within the filter. We'd also appreciate any other useful observations.  Thanks!

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2 Answers

  1. Bone char has limitations due to hygienic conditions on its production and irregular efficiency adsorbing fluorine.  It has been an useful solution for undevelopped countries.  We have developped a new technology, HINDROP, that doesn't require the treatment controls, energy, chemicals or specialized workers to manage it.  It works at any water conditions (pH, temperature or presence of any other elements) obtaining an adsortion capacity over 0,9 mg F/g  There are no wastes and it may be implemented at domestic or communal solutions

  2. I might suggest setting up some bench-scale tests .. might help with the answers to some of your questions .. when working with a synthetic resin adsorbent back in the 1970's, Ambersorb XE-340 manufactured by Rohm & Haas, we regenerated the resin with steam after it reached saturation .. it was very effective for the compouds we were studying . . volatile organic compounds (VOC's) .. 1,2-Dichloroethylene, Trichloroethylene, Tetrachloroethylene, & 1,1,2-Trichloroethane .. steam regeneration restored the resin to almsot 90% virgin capacity .. I don't know the similiarities/ /differences of the  bone char material to the Ambersorb XE-340 .. may / / may not be compatible with steam regeneration . .. but steam regenaation is a common practice in the industry .. you may also want to consult with the supplier / / manufacturer of the bone char filters .. they may already have proven methodologies for cleaning .. Thanks . Bob H