Conversion of pollutants to fertilisers: ion exchange synthesis of potassium sulphate from acidic mine waters.
The paper reports the results obtained by the development of ion exchange synthesis of K2SO4 from the natural acidic mine waters (AMW) of Rio Tinto area (Huelva, Spain). The process flowsheet includes several sequential stages permitting production of potassium sulphate and desalinated water along with the recovery of four metals.
Muraviev
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Department of Chemistry, Autonomous University of Barcelona, E-08193 Bellaterra, Barcelona, Spain. dimitri@icmab.es
D003247:Conservation of Natural Resources; D005308:Fertilizers; D006863:Hydrogen-Ion Concentration; D007474:Ion Exchange; D019216:Metals, Heavy / Q000302:isolation & purification; D008906:Mining; D013431:Sulfates / Q000138:chemical synthesis*; D014865:Waste Disposal, Fluid / Q000379:methods*
D005308:Fertilizers; D019216:Metals, Heavy; D013431:Sulfates; C031512:potassium sulfate