TY - JOUR AU - Carreño Flórez, Edgar Farid AU - Ferrer Pacheco, Martha Yasmid AU - Peña Rodríguez, Gabriel PY - 2019/07/23 Y2 - 2024/03/29 TI - Sodic and Potassium Zeolites from Fly Ash Coming from Coal Combustion of Thermoelectric Termotasajero S.A.S JF - Ciencia en Desarrollo JA - Cienc. En Desarro. VL - 10 IS - 2 SE - Artículos de investigación / Research papers DO - 10.19053/01217488.v10.n2.2019.8035 UR - https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/8035 SP - 219-233 AB - <div>The fly ash (CV) of Termotasajero S.A.S, is a residue of coal combustion with high environmental impact&nbsp;on air, water, soil and ecosystems. They have a high content of Si and Al, which makes them an optimal&nbsp;by-product for the production of zeolites. The CV were sieved and leached in order to produce high purity&nbsp;zeolites. The synthesis was carried out by the hydrogel method in activation with alkalis of NaOH-2M&nbsp;and KOH-5M, crystallization of 2h and 3h respectively, at 90° C and 560 rpm. The sodium and potassium&nbsp;zeolites presented a Si/Al molar ration of 1.19 and 1.00 respectively, which were classified as zeolites&nbsp;natrosilite and zeolite K-F, according to the ray-X diffraction pattern (DRX). In the zeolitic product, the&nbsp;main elements were identified as Si, Al, O, Na, K, Ca, Fe, and in smaller proportions Ti and Mg, with&nbsp;irregular morphology of microcrystals with particle sizes less than 12 micrometers (μm). The analysis of&nbsp;Cationic Exchange Capability (CIC) shows the ionic capability of the material, finding that the highest&nbsp;value (141 meq/100g) corresponds to the zeolites activated with NaOH.</div> ER -