Extent of zeolite synthesis via alkaline fusion from tailings dam sediments
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ORIGINAL ARTICLE
Extent of zeolite synthesis via alkaline fusion from tailings dam sediments Fábio Ramos Dias de Andrade1 · Maria Thereza Akemi Guimarães Yogi1 · Elton Barbosa Gomes1 · Mirian Chieko Shinzato2 Received: 28 June 2019 / Accepted: 22 July 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Zeolite was synthesized via alkaline fusion from the tailings dam sediments of a sand mine in southern Brazil. The sediments are composed of a mixture of illite, kaolinite, vermiculite, quartz and K-feldspar yielding a silty-loam texture. The extent of zeolite synthesis was tested under varied NaOH:sediment ratio, temperature and fusion time. At the NaOH:sediment ratio of 8:5 and fusion temperature of 600 °C, all minerals were dissolved and converted in faujasite, except a quartz residue of less than 5 wt%. The synthetic faujasite shows intergrown octahedral habit, grain size
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