Nanocomposites and nanomaterials

Nanostructured iron-based sorption materials
Gusak A.1, Litynska M.1, Dontsova T.1
1 Department of Technology of Inorganic Substances, Water Treatment and General Chemical Technology of National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute". Prospect Peremohy, 37, Kyiv-03056, Ukraine. 
E-mail: m.litynska-2017@kpi.ua

Iron-based sorption materials are effective sorbents for arsenic compounds removal. But these materials can also be used for remediation of As-polluted soils, phosphate and humate removal in drinking water and wastewater treatment [1-3]. Low arsenic bioaccessibility by fixation in nanostructured iron-based materials is one of the significant advantages of this sorbents [4]. Thus, synthesis and application of novel nanostructured iron-based sorbents and nanocomposites are the areas of current interest due to the high toxicity of arsenic compounds and the widespread occurrence of these pollutants in natural water.
We synthesized nanostructured iron oxyhydroxide by homogeneous precipitation. Iron(III) chloride was used as a source of iron and urea (ammonia from thermal hydrolysis of urea) was a precipitator. Synthesized materials demonstrated high efficiency in removal of As(III) and As(V) (about 70 mg/g) and humates (more than 98% removal). Also these adsorbents are suitable for hybrid adsorption-membrane filtration treatment method due to its particle size and filtration properties.

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