Abstract
The present study is aimed to examine the adsorption characteristics of Cu(II) by using the novel cellulose acetate composite and to apply it for the removal of Cu(II) from real wastewater samples. In order to achieve this objective, ethylenediamine, diethylenetriamine, triethylenetetramine and te-traethylenepentanene were used for immobilization of grafted cellulose acetate-nanoscale manganese dioxide. Cellulose was extracted from mangrove species Avicennia marina and converted to cellulose acetate then it was formed composite with nano-manganese dioxide via precipitation of nano-manganese dioxide on it. The composite was grafted with acrylamide monomer before immobilization. The synthesized compounds were used for adsorption of Cu(II) and characterized by FT-IR, TGA and SEM. The adsorption characteristics of synthesized sorbents were optimized. Langmuir and Freundlich models were used to establish sorption equilibria. The analytical applications of these modified materials were applied successfully for the removal of Cu(II).
Highlights
In order to achieve this objective, ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentanene were used for immobilization of grafted cellulose acetate-nanoscale manganese dioxide
Titanium oxide nano-particales were added into cellulose acetate membrane which can lead to improvement of membrane porosity, stability and performance [30]
The C-H stretching bands at 2907, 2928, 2928, 2960, 2964, 2924 and 2929 cm−1 and scissoring motion of CH2 bending vibration at 1430, 1435, 1432, 1400, 1410, 1439 and 1464 cm−1 are characterized for cellulose, CA, g-cellulose acetate–nano-manganese dioxide hybrid material (CA-NMO), g-CA-EN-NMO, g-CA-DETA-NMO, g-CA-TETA-NMO and g-CA-TEPA-NMO, respectively, where, β-glycosidic linkage in cellulose spectrum was observed at 897 cm−1
Summary
Various methods are used for extraction of heavy metals from aqueous solution, such as reverse osmosis, chemical precipitation, ion exchange, coagulants and flocculation and adsorption [17] [18] [19] [20]. Most of these methods do not seem to be economically feasible because of their relatively high cost. The functionalized composite was successfully employed in the recovery of the mentioned metal ion from real wastewater samples
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