Augmenting the adsorption of palladium from spent catalyst using a thiazole ligand tethered on an amine functionalized polymeric resin

The Functionality of Ion Exchange Resins for Esterification, Transesterification and Hydrogenation Reactions

“…Differences between ion exchange and adsorption process [12] Ion exchange Adsorption sorbed species are ions sorbed species are electrically neutral substances removed from liquid phase and substituted by ions from the solid phase removal process only cannot be described by only diffusion equation due to the fluxes of at least two different ions being coupled together can be described by diffusion equation to be adsorb on and post-adsorption which allows for reduction of the metallic species, thereby creating a platform for the nanoparticles to be dispersed uniformly. [21][22][23] The polymeric platform which serves as a solid stabilizer stops the particles from agglomerating, hence, increasing the activity of catalyst and eliminating high temperature for the calcination step required by most catalyst. This is due to the strong bond existing between the functional groups which improves interaction between the polymer structure and the metal (minimizing leaching) and allows for variations of metallic loading by adjusting the uptake of the metal precursor by the ion exchange resin.…”

“…In comparison to activated carbon and alumina which have been extensively reported in literature by Wang, functional polymeric resins offer several advantages such as possess uniformly dispersed functional groups allowing ions (precursor) to be adsorb on and post‐adsorption which allows for reduction of the metallic species, thereby creating a platform for the nanoparticles to be dispersed uniformly . The polymeric platform which serves as a solid stabilizer stops the particles from agglomerating, hence, increasing the activity of catalyst and eliminating high temperature for the calcination step required by most catalyst.…”

Atik Portakal Kabuklari Üzeri̇ne Paladyum Adsorpsi̇yonu İçi̇n Farkli Modelleme Yöntemleri̇ni̇n Karşilaştirilmasi

“…The rapid industrial development resulting in the increasing demand for Pd has further enhanced the significance towards recovering this valuable metal. Techniques such as solvent extraction, ion exchange, chemical precipitation and adsorption are some of the well-known methods for the recovery of Pd (Sharma and Rajesh, 2016). Among them, adsorption is an effective strategy for the recovery of metal ions from aqueous solution and the selection of adsorbent plays a key role in it.…”

“…In the literature, different adsorbents were used for Pd adsorption including, crosslinked lignophenol (Parajuli et al, 2009), chemical modified waste paper (Adhikari et al, 2008), modified polyacrylonitrile (Morcali and Zeytuncu, 2015), thiazole ligand tethered on an amine functionalized polymeric resin (Sharma and Rajesh, 2016), 1,3,5triazine-pentaethylenehexamine polymer (Sayın et al, 2015), polyamine functionalized polystyrene-based beads and nanofibers (Fayemi et al, 2013), 2-mercaptobenzothiazole impregnated cellulose (Sharma and Rajesh, 2014).…”

A Comparison of Palladium Sorption Using Polyethylenimine Impregnated Alginate-Based and Carrageenan-Based Algal Beads

“…For example, Nagireddi et al [59] reported an increase of palladium sorption onto chitosan (amine group-based sorbent) when the concentration of chloride increased from 0 to 33 mg L −1 , followed by a significant decrease of metal binding when the chloride concentration continued growing up to 500 mg L −1 . Similarly, Sharma et al [60] observed that a maximum Pd(II) sorption capacity could be achieved for amine-functionalized resin when the concentration of chloride was 0.1 M; (3) If the bond between Pd(II) and the sorbents is not ionic, Pd(II) sorption could be almost independent on salinity variation, such as Pd(II) sorption onto activated carbon [5].…”