Highly efficient and selective recovery of Au(III) by a new metal-organic polymer

Highly selective enrichment of Au using enaminone covalent organic polymers (COP)

“…9 Adsorption is considered as the most promising method for Au recycling because of its simple operation and high efficiency as well as low cost. [10][11][12] However, it is urgent to develop novel adsorbents with a large adsorption capacity, excellent selectivity and fast adsorption speed for Au. 12 Recently, recycling Au has been attracting more and more attention.…”

“…[10][11][12] However, it is urgent to develop novel adsorbents with a large adsorption capacity, excellent selectivity and fast adsorption speed for Au. 12 Recently, recycling Au has been attracting more and more attention. Activated carbon 13,14 is usually employed as adsorbent to enrich Au from the recovered solution due to its abundant pore structure, easy elution, and environmental friendliness.…”

“… 10–12 However, it is urgent to develop novel adsorbents with a large adsorption capacity, excellent selectivity and fast adsorption speed for Au. 12 …”

Transport of Au(III) from HCl medium across a liquid membrane using R₃NH⁺Cl^-/toluene immobilized on a microporous hydrophobic support: optimization and modelling

“…Very often, the recovery of gold from these wastes is done by leaching of the waste with aqua regia, resulting in a leachate in which gold is present as AuCl4 -or HAuCl4 [5]. The recovery of this precious metal from the HCl solution can be done mainly by activated carbon [6], ion exchange resins [7][8][9][10], liquid-liquid extraction using conventional [11][12][13] and ionic liquid [14][15][16][17] extractants, different adsorbents [18][19][20][21][22] and as mentioned above by liquid membranes [23][24][25][26]; more recently, the use of carbon nanotubes have been also considered in the treatment of dilute Au(III)-bearing HCl solutions [27][28][29].…”

Transport of Au(III) from HCl Medium across a Liquid Membrane Using R3NH+Cl−/Toluene Immobilized on a Microporous Hydrophobic Support: Optimization and Modelling

“…Very often, the recovery of gold from these wastes is done by leaching of the waste with aqua regia, resulting in a leachate in which gold is present as AuCl 4 − or HAuCl 4 [5]. The recovery of this precious metal from the HCl solution can be done mainly by activated carbon [6], ion exchange resins [7][8][9][10], liquid-liquid extraction using conventional [11][12][13] and ionic liquid [14][15][16][17] extractants, different adsorbents [18][19][20][21][22], and as mentioned above by liquid membranes [23][24][25][26]; more recently, the use of carbon nanotubes have been also considered in the treatment of diluting Au(III)-bearing HCl solutions [27][28][29].…”