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Abstract_George Z. KYZAS. Novel Efficient Adsorbent Materials for Decontamination of Synthetic Wastewaters
Novel efficient adsorbent materials for decontamination of synthetic wastewaters
George Z. KYZAS
Hephaestus Laboratory, School of Chemistry, Faculty of Sciences, Democritus University of Thrace, GR-65404 Kavala, Greece
Correspondence: firstname.lastname@e-mail.com
ABSTRACT
Sorption is a physical and chemical process by which one substance becomes attached to another. A specific case of sorption is the adsorption; Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. Adsorption is considered to be a very promising separation technique especially for the removal of pollutants in liquid-phase (dyes, heavy metals, phenols, etc). However, the economic crisis of the 2000s led researchers to turn their interest in adsorbent materials with some special characteristics: (i) super-adsorbent materials of high capacity; (ii) low-cost adsorbent materials; (iii) nano-adsorbent materials, (iv) 3d-printed adsorbent materials. All above can include materials with significant properties beginning from the low-cost and reaching the super-properties. The first class contains many materials as activated carbons, agricultural wastes, modified polymers, graphenes, etc. Some indicative classes of materials are: (i) activated carbons of high surface area, (ii) polymers (i.e. chitosan) of high capacity; (iii) agro-food wastes of almost low-cost synthesis; (iv) nanomaterials (graphenes) of significant properties, (v) 3D adsorbent materials. In this lecture, a recent summary of this type of works will be presented analyzing in details the next-generation adsorbent materials, discussing many different topics such as: (i) adsorption capacity; (ii) kinetic modelling and (iii) desorption/reuse potential.