Effective removal of ruthenium(III) ions from wastewater by xanthate-modified cross-linked chitosan

An Aryl‐ether‐linked Covalent Organic Framework Modified with Thioamide Groups for Selective Extraction of Palladium from Strong Acid Solutions

“…Specifically, a portion of the C−N characteristic absorption peak experienced a shift to lower wavenumbers, forming a shoulder peak, while another fraction of C−N transformed into C=N. Moreover, in COF‐316‐DM, the characteristic absorption peak associated with the C=S bond at 1179 cm −1 also underwent a shift to lower wavenumbers and merged with the C−Ph peak around 1191 cm −1 after Pd adsorption [33,40,41] . This indicates the involvement of sulfur (S) atoms in the interaction with Pd (Figure 4c).…”

Indole-functionalized cross-linked chitosan for effective uptake of uranium(vi) from aqueous solution

“…The result shows that the uptake of U(VI) on IAA-CTSA is favorable, and demonstrates that the adsorption process was expected to be a chemical adsorption process with high adsorption intensity towards U(VI). 21 Based on the aforementioned adsorptive characteristics, the extraction potential of IAA-CTSA for U(VI) was compared with previously proposed adsorbents including CTSbased and other inorganic and organic materials, as represented in Table 3. The IAA-CTSA exhibited the highest adsorption capacity comparable to most of these alternative adsorbents.…”

“…The widespread application of the ion exchange method is restricted due to its high cost. 21 Compared with these techniques, adsorption technology possesses the advantages of convenient operation, low cost, high efficiency, safe and is pollution free. 22,23 Hence, adsorption science can be considered as a valuable avenue for extracting U(VI) contaminants.…”

Adsorption property and mechanism of glutaraldehyde-crosslinked chitosan for removal of 2,4-dichlorophenoxyacetic acid from water

“…20 Unfortunately, several disadvantages such as low mechanical stability and poor chemical stability in an acidic solution limit the widespread application of chitosan. 27 In recent years, improving the adsorption capacity of chitosan by chemical modification has attracted increasing attention, and a great deal of effort has been made on the exploration of chitosan derivatives to obtain improved adsorption capacity. [28][29][30][31] In this paper, we prepared glutaraldehyde-crosslinked chitosan (GCC) though simple chemical modification with glutaraldehyde.…”