Graphene Oxide-Chitosan Composites for Water Treatment from Copper Cations

This paper considers modern sorption materials for wastewater treatment. The literature data on treatment with based graphene and chitosan are presented. production application of composite sorbents is discussed. It shown that a promising oxide (GO) as filler enhances the mechanical properties polymer matrix. biopolymer (Ch) challenging matrix GO, having unique sorption, chelate-forming, ion-exchange, complex-forming properties. Composite adsorbents have high extraction efficiency heavy radioactive metals, dyes, pharmaceutical compounds dorzolamide tetracycline. GO-Ch composites various ratios (2–7%) were formed by drop granulation. obtained investigated in terms ability to extract copper cations from effluents, it was content GO:Ch = 55.5:44.5% (by mass dry granules) had best sample purification (96%) required (attrition ≤ 0.4%, grindability 4%). For this sample, influence factors (pH, sorbent dosage, temperature, time sorption) processes studied. conditions determined. dosage 20 g/L, min, temperature ± 2 °C, pH 7. adsorption isotherm plotted maximum capacity A 58.5 mg/g Microstructural infrared (IR) spectroscopy studies showed presence porous surface OH- C=O functional groups. mechanism due physical composites, chemisorption groups, proposed. methylene blue iodine absorption, specific area samples, spent proposed be used soil improver.