camelion.....Nice find. This is indeed a one of a kind H2SO4 process. I work in the consulting engineering field and I have been involved in the construction procurement for a total of 7 H2SO4 plants worldwide, As far as I know there are only 2 commercial processes active at the moment. Both processes involve small H2SO4 refineries which are constructed alongside a large mine smelter.Sulfur is extracted from the stacks of the smelter and converted into H2SO4. Every H2SO4 plant that I worked on had a Plad Equipment Inc dryer as part of the process. Mark A Marcin Inventor of GWTR H2SO4 and Forward Osmosis patents was recruited by G.Kast to be GWTR technical director. If Erik has a brain in his head he will recruit Mark A Marcin to the GWTR Board Of Directors. Note from that patent description reference is made to Sweetwater solution. That explains why Aqua Dulce is partnering with GWTR in the commercial development of H2SO4 patent. Aqua Dulce markets the Sweetwater tech in the Western World.
Other References:The Sweetwater Solution SS - 10, Sweetwater International, Inc. 2007, 2 pages
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