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Doumit, PS 2017, 'The production of zeolitic materials from sugar cane bagasse ash', PhD thesis, Southern Cross University, Lismore, NSW.

Copyright PS Doumit 2017


A porous, crystalline, self-supporting zeolite-X/silica composite for industrial use was synthesised from sugar cane bagasse ash by a simple hydrothermal alkaline digestion. The factors affecting the synthesis efficiency, measured by X-ray powder diffraction, were optimised statistically at the micro-scale using statistical factorial design. X-ray powder diffraction combined with scanning electron microscopy and energy dispersive X-ray analysis demonstrated the production of a zeolite-X/silica composite with similar yield and near identical characteristics under scaled up synthesis conditions. The zeolite-X/silica composite was shown to adsorb nearly 100% of added metal from copper and zinc solutions over a wide range of pH and metal concentrations.