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New approach for inert filtering media modification by using precipitates of deironing filters for underground water treatment

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Abstract

The anthracite granules were coated with iron oxide by a solution combustion synthesis method in a muffle furnace oven. As for iron precursor, an iron-containing precipitate of water treatment plants was used. The influence of four different reducing reagents on surface phase composition and properties of the modified materials was investigated. Obtained samples were investigated using different diffraction and spectroscopic methods. Using the solution combustion synthesis method, anthracite granules formed fine dispersed and crystalline structures of iron oxides on their surface with the iron content up to 40.7 wt%. This had a positive effect on the catalytic capacity of the material for deironing of underground water as well as for the increase in specific surface area. The catalytic properties of the obtained samples and the effectiveness of deferrization of groundwater were investigated. The use of tested materials makes it possible to reduce of catalytic layer height of the filter media from 50 to 20 cm for the filtration rate 12 m/h and enhance the treatment efficiency during the first start-up of filters after regeneration up to 3 times.

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Funding

This study received financial support from the Ministry of Science and Higher Education of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (No. K2-2019-007), implemented by a governmental decree dated 16th of March 2013, N 211.

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Correspondence to Valentin Romanovski.

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The authors declare that they have no competing interests.

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Responsible Editor: Philippe Garrigues

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Romanovski, V. New approach for inert filtering media modification by using precipitates of deironing filters for underground water treatment. Environ Sci Pollut Res 27, 31706–31714 (2020). https://doi.org/10.1007/s11356-020-09514-5

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  • DOI: https://doi.org/10.1007/s11356-020-09514-5

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