Abstract
Contamination of water resources by industrial dyes has caused environmental, economic and human health hazards. There is a great need to find effective technologies to remove pollutants in a safe and accessible way. An enticing option involves employing cellulose cryogels as adsorbents to extract dyes from water. This research delves into the production intricacies of cellulose/graphene cryogels and meticulously explores their physical and chemical properties. Dye adsorption tests were conducted to evaluate the efficiency of the prepared cryogels in removing organic dyes from water. The results show that cryogels have high dye adsorption capacity, especially when combined with graphene nanoplatelets. Kinetic and isothermal models reveal that the adsorption process follows pseudo-second-order kinetics and is described by the Langmuir isotherm, suggesting a single-layer adsorption mechanism and a strong interaction between the dyes and the cryogels. In summary, the study demonstrates that the cellulose/graphene nanoplatelets cryogels are effective in removing organic dyes from water, offering a sustainable and economically viable solution to the problem of industrial dye pollution.
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