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emoval of malachite green dye from aqueous solutions by diasporic Greek raw bauxite

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I.K. Georgiadis, A. Papadopoulos, A. Filippidis, A. Godelitsas, A. Tsirambides, D. Vogiatzis
I.K. Georgiadis, A. Papadopoulos, A. Filippidis, A. Godelitsas, A. Tsirambides, D. Vogiatzis

Abstract


Raw bauxite from Klisoura mine (Prefecture of Fokida, Greece) containing 72 wt.% diaspore, 16 wt.% hematite, 6 wt.% quartz, 4 wt.% anatase and 2 wt.% calcite, has been used for the removal of malachite green dye from aqueous solutions. The batch type experiments were conducted with 10 ml of solution, at pH = pHZPC = 6.7 and contact time 1 h. The initial concentration of malachite green dye was 10 mg/l, the bauxite quantity was 0.02 g, 0.04 g, 0.06 g, 0.1 g and 0.2 g. The highest adsorption capacity achieved was 4.5 mg/g (90% removal) using 0.02 g bauxite. The removal capacity of raw bauxite is comparable to other non-conventional adsorbents, such as neem sawdust, sugar cane dust and cane root carbon.

Keywords


Wastewater treatment, textile wastewater, adsorption, industrial minerals and rocks

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Copyright (c) 2017 I.K. Georgiadis, A. Papadopoulos, A. Filippidis, A. Godelitsas, A. Tsirambides, D. Vogiatzis

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