Synthesis and characterization of schwertmannite in arsenic removal application
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Date
2016-06
Authors
Muhammad Ikhwan Mohd Zamri
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Abstract
Recently, Schwertmannite, a ferric oxyhydroxy sulfate mineral, has attract attention broadly due to its high sorption capacity for toxic arsenic species. This research work has been carried out on the synthesis and characterization of Schwertmannite. The present study involved in the synthesis Schwertmannite at varying condition such as speed of agitation and reagent addition. The synthesized Schwertmannite was obtained using modified neutralization method. This research work involved preliminary trial runs using the neutralization method and also modification that have been carried out. The synthesis using the neutralization method, about 0.05 M of solution was mixed with 0.01 M of solution to obtain an acidic environment in a reaction vessel and followed by titration with 1 M of under stirred condition into the mixing solution at every one minute to adjust the final pH to 3-4. The synthesized schwertmannite was shown to contain mineral phases such as Fe, S and O. From SEM/EDX analysis results showed that iron element was present in the precipitate.