By-products revaluation in the production of design micaceous materials: Fid-Bau Portal

By-products revaluation in the production of design micaceous materials

Mouchet, Anais / Raffin, Florian / Cota, Agustín / Osuna, Francisco J. / Pavón, Esperanza / Alba, María D.

Abstract One of the main objectives of a sustainable development and circular economy is the recycling of by-products generated in industrial and agricultural production processes. One of the possible solution is the use of such by-product materials in the synthesis of environmental adsorbents. In the current research, we present the synthesis of a high charge swelling mica with enhance adsorbent properties from blast furnace slag and rice husk ash. Moreover, to ensure the sustainable synthesis a natural bentoniteis used as Si and Al source. Thus, the current study investigated the fabrication of swelling high charged micas, Na-Mn (n (layer charge) = 2 or 4), from FEBEX bentonite, blast furnace slag and rice husk ash thorough the NaCl melt method. The reaction yield, cation framework distribution and structural characteristic of micas have been studied thorough X-ray Diffraction and Solid State Nuclear Magnetic Resonance. The yields of Na-Mn synthesis and degree of purity of the mica depends on the nature of these precursors. Thus, a sustainable, non-expensive and environmental friendly process has been evaluated.

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Highlights • Sustainable synthesis of design swelling high-charged micas using by products is possible. • The formation of high charge mica is favored when rice husk ash instead of blast furnace slag is used. • Use of low charge 2:1 phyllosilicate as reactive improves the reaction yields. • The purity of the reactive is crucial for obtaining better reaction yields.