Nanosized oxides of different compositions as adsorbents for hazardous substances removal from aqueous solutions and wastewaters

Abstract

Adsorption methods are considered to be highly effective in the industrial effluents treatment technologies. Preparation of cheap and selective adsorbents with significant sorption capacity is a serious challenge for scientists. Nanosized mixed oxides have been successfully used for removal of environmental contaminations from aqueous streams. Taking into account the morphological and microstructural properties of the nanosized oxides, mechanical strength and non-toxicity in many cases, these materials are popular. The literature review concerning removal of metal ions, dyes and polymers using nanosized single and mixed oxides was made. The adsorption parameters which affect removal efficiency, i.e. concentration, phase contact time as well as equilibrium and thermodynamic aspects, were taken into account.