Properties of catalyst for iron and manganese oxidation in filter materials

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Abstract

The aim of this work is to determine the properties of contact layers of grain of different type of filter media in term of their suitability for catalytical manganese oxidation and auto-activation for manganese removal from groundwater. The following oxidative filtration materials were investigated: auto-activated silica sand taken from full-scale filters (oxide coated filter media), Pyrolox - manganese ore-natural material and Hydrolit - artificially activated material. As a reference two natural not chemically active materials were tested: clean silica sand and clean chalcedonite. The investigation resulted in chemical composition and microstructure parameters of catalyst contact layers of grains. The modern analytical methods were used: EDAX, Raman spectroscopy, mercury and helium porozymetry. The data indicated that catalyst from autoacivated filtration material has better chemical composition and porosity parameters in comparison to tested catalytic filtration materials, making it more suitable for adsorption and catalytic manganese oxidation.

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Jez-Walkowiak, J., Komorowska-Kaufman, M., Dymaczewski, Z., Sozański, M. M., & Zakrzewski, P. (2018). Properties of catalyst for iron and manganese oxidation in filter materials. In E3S Web of Conferences (Vol. 59). EDP Sciences. https://doi.org/10.1051/e3sconf/20185900014

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