نتایج جستجو برای: h3po4

تعداد نتایج: 559  

Journal: :International Journal for Research in Applied Science and Engineering Technology 2020

Journal: : 2021

Rare earth elements (REEs) extraction from wastes and/or by-products is alternative possibility of their winning. The occurrence ofREEs, namely 50.1 ppm La, 100.1 Ce and 44.3 Nd was confirmed in solid fly ash samples the coal fired heatingplant (TEKO, Inc. Košice, eastern Slovakia). submitted contribution presents laboratory results REEs leaching ashusing 3M HCl, HNO3, H2SO4 H3PO4 at 80°C durin...

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