Synthesis and characterization of a novel amino modified starch and its adsorption properties for Cd(II) ions from aqueous solution

Adsorption Properties of Copper (II) Ion From Aqueous Solution by Starch-Grafted Polyacrylamide and Crosslinked Starch-Grafted Polyacrylamide

“…The values of ΔG became more negative with the increase in temperature, indicating that the adsorption processes would be more favorable at high temperature. The similar results are found in the studies of Wang and Qin [33], Rakhshaee et al [34], Xie et al [35]and Yin et al [36], The positive values of ΔS showed the affinity of SA or CSA for Cu 2+ ions increased the disorder at the solid/liquid interface during the adsorption process. Generally, the change in free energy for physical adsorption is between −20 kJ/mol and 0, and that for chemical adsorption is between −80 and −400 kJ/mol [37].…”

Adsorption Behavior of Azo Dye Eriochrome Black T from Aqueous Solution by β-Cyclodextrins/Polyurethane Foam Material

“…Among these, polysaccharides such as chitin [12] , starch [13] , and their derivatives (chitosan [14] , cyclodextrin [15] ) deserve particular attention. These biopolymers represent an interesting and attractive alternative as adsorbents because of their particular structure, physicochemical characteristics, chemical stability, high reactivity and excellent selectivity towards aromatic compounds and metals, resulting from the presence of chemical reactive groups (hydroxyl, acetamido or amino functions) in polymer chains [16] .…”

Free-Radical Graft Polymerization onto Starch as a Tool to Tune Properties in Relation to Potential Applications. A Review

“…In this case, the functionality is probably in the grafts only [5,29], so there need to be enough of them to give a good binding capacity. Since the metals ions must be able to penetrate the structure, a relatively open structure seems a| reasonable requirement.…”

“…Still, the number of publications reporting about the structural properties of the grafted products, molecular weights, and spacing of the grafts is limited. Many of the more recent research papers show the effect of reaction variables upon the behavior of the product, but not specify about compositional determinations of the grafted product, e.g., [4][5][6]. Still, in many applications, the performance of a polymer is highly dependent on its molecular structure [7,8] and knowledge of that architecture will be a key to further development.…”