Preparation of chitosan/sodium alginate/nano cellulose composite for the efficient removal of cadmium (II) cations from wastewater and soil systems

In this study, chitosan/sodium alginate/nano cellulose (CSA-N) nanocomposite hydrogels were prepared using a completely green route and used as sorbents to adsorb Cd 2+ ions from water and soil systems of an environmental aspect. The sorbents were characterized by FTIR, SEM, and XRD. The influences...

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Bibliographic Details
Published in:	Environmental geochemistry and health Vol. 44; no. 4; pp. 1259 - 1275
Main Authors:	Mola ali abasiyan, Sara, Nasiri Sour, Azar, Mokhtari, Amir, Dashbolaghi, Farahnaz, Sabzi, Mohammad
Format:	Journal Article
Language:	English
Published:	Dordrecht Springer Netherlands 01-04-2022 Springer Nature B.V
Subjects:	Adsorption Alginates Alginic acid Cadmium Cations Cellulose Chitosan Desorption Earth and Environmental Science Environment Environmental aspects Environmental Chemistry Environmental Health Geochemistry Hydrogels Hydrogen-Ion Concentration Ionic strength Kinetics Nanocomposites Original Paper Public Health Removal Seaweed meal Sodium Sodium alginate Soil Soil Science & Conservation Soil water Soils Sorbents Terrestrial Pollution Waste Water Wastewater Water Pollutants, Chemical - analysis Soil Polysaccharides Nanocomposite Wastewater Cadmium (II) removal Adsorption isotherm
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Summary:	In this study, chitosan/sodium alginate/nano cellulose (CSA-N) nanocomposite hydrogels were prepared using a completely green route and used as sorbents to adsorb Cd 2+ ions from water and soil systems of an environmental aspect. The sorbents were characterized by FTIR, SEM, and XRD. The influences of initial Cd 2+ concentration, the presence of nano cellulose, type of the polluted environment, and ionic strength on adsorption and desorption isotherms were investigated. The maximum adsorption capacity of cadmium onto CSA was significantly increased from 2264.9 to 4380.97 μmol/g when the system was changed from soil to water, respectively. While, the maximum adsorption capacity of cadmium onto CSA-N was almost the same in the soil and wastewater systems, i.e., 3419.5 and 3230.3 µmol/g, respectively. The results indicated that Langmuir and Freundlich models provided the best fit for the experimental adsorption data for CSA and CSA-N, respectively. By comparing the amounts of Δ q , the difference between adsorption and desorption amounts, the CSA was not economically feasible sorbent at high initial concentrations of Cd 2+ in the wastewater system, while, CSA-N was demonstrated to be a more efficient adsorbent than CSA for cadmium removal from both the soil and wastewater systems.
ISSN:	0269-4042 1573-2983
DOI:	10.1007/s10653-021-01138-z