Phosphate adsorption from aqueous solutions by disused adsorbents: Chitosan hydrogel beads after the removal of copper(II)

Adsorption characteristics of phosphorus from aqueous solutions onto phosphate mine wastes

“…A similar value (5.11) has been determined for phosphorus adsorption onto chitosan hydrogel beads [27]. Furthermore, the Langmuir parameter, R L , for an initial aqueous concentration of 15 and 100 mg L −1 were estimated to 0.32 and 0.07, respectively.…”

Removal of dyes from aqueous solutions by straw based adsorbents: Batch and column studies

“…Recently, a more efficient and economical method has been introduced to treat with these disused adsorbents. The disused adsorbents were applied as a new type of adsorbents for the altered surface structures [23]. In this case, the surface structures of modified straws have been distinctly changed after adsorption of a layer of MB, and the MB loaded adsorbents have been tried directly to adsorb MO, a kind of anionic dyes, which structure was also shown in Supporting Information Scheme S1.…”

Adsorption characteristics of used brick for phosphorus removal from phosphate solution

“…Meanwhile, some other wastes, such as eggshell [14], giant reed [15], skin split [16], coir pith [5], sugarcane bagasse fibers [17], and pine sawdust [18][19][20], have been modified to adsorb phosphorus. In addition, some new approaches, such as lithium intercalated gibbsite [21], magnetic ion-exchange resin [22], chitosan hydrogel beads after the removal of copper (Ⅱ) [23], activated carbon loaded with Fe(III) oxide [24], zirconium(IV)-loaded fibrous [25], have also been developed to remove phosphorus.…”