2. Experimental procedure and materials
2.1 Materials
The natural clays used as starting materials in zeolite synthesis corresponds to illite-rich clay
from the Barroblanco mine, situated in the municipality of Oiba (Santander), and kaoliniterich
clay cropping out around the Sochagota Lake, Paipa (Boyacá). The raw materials were
prepared prior to the synthesis process by drying during 24 h, and pulverized with an agate
Mortar grinder RETSCH RM 100. Finally, the samples were sieved and particles of 63 μm
selected for zeolite synthesis. Activating was done using the following chemical reagents:
sodium hydroxide, NaOH, as pellets (99%, Aldrich) and distilled water. To determine the
removal efficiency of Cr+3 and Ni+2 of the as-synthesized zeolite, a wastewater sample was
collected from an electroplating industry located at Bucaramanga (Santander).
2. Experimental procedure and materials2.1 MaterialsThe natural clays used as starting materials in zeolite synthesis corresponds to illite-rich clayfrom the Barroblanco mine, situated in the municipality of Oiba (Santander), and kaoliniterichclay cropping out around the Sochagota Lake, Paipa (Boyacá). The raw materials wereprepared prior to the synthesis process by drying during 24 h, and pulverized with an agateMortar grinder RETSCH RM 100. Finally, the samples were sieved and particles of 63 μmselected for zeolite synthesis. Activating was done using the following chemical reagents:sodium hydroxide, NaOH, as pellets (99%, Aldrich) and distilled water. To determine theremoval efficiency of Cr+3 and Ni+2 of the as-synthesized zeolite, a wastewater sample wascollected from an electroplating industry located at Bucaramanga (Santander).
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