Ultrahigh and selective adsorption of Au(III) by rich sulfur and nitrogen-bearing cellulose microspheres and their applications in gold recovery from gold slag leaching solution

A freestanding, hierarchically porous poly(imine dioxime) membrane enabling selective gold recovery from e‐waste with unprecedented capacity

“…In order to more intuitively evaluate the economic feasibility of gold recovery from the CPU leaching solution, the production cost of PIDO membrane and the profit earned during gold recovery process are roughly calculated based on the price of the input raw materials, current gold price as well as the recovered gold amount using PIDO membrane. From the details supplied in Table S4, the cost of PIDO membrane is as low as $0.097/g, far less than those for other gold adsorbents reported in the literature 1,33,57–61 . More significantly, the generated gold income and profit/cost ratio for per gram PIDO membrane are $584.4 and 6024.8, respectively, prevailing over other gold adsorbents by an overwhelming majority 1,33,57–61 .…”

Turning waste into wealth: efficient and rapid capture of gold from electronic waste with a thiourea functionalised magnetic core stirring rod adsorbent and its application for heterogeneous catalysis

“…This was mainly due to the reduction reaction of Au( iii ) to Au(0) consuming the adsorption sites. 58…”

“…This was mainly due to the reduction reaction of Au(III) to Au(0) consuming the adsorption sites. 58 2.4.8 Gold capture from actual e-waste. To investigate the adsorption properties of MCSR-ATU using actual e-waste, a printed circuit board (PCB) was removed from a discarded mobile phone and subsequently placed into a solution to leach out the metals present.…”

Rational fabrication of a new ionic imprinted carboxymethyl chitosan-based sponge for efficient selective adsorption of Gd(iii)

“…Up to now, among numerous techniques proposed, the adsorption strategy stands out because of its handiness and high efficiency. Such adsorbents as cellulose-based materials, 7,8 pseudomonas fluorescens cells 9 and silica-based materials 10 are applied to remove metal ions from water. Unfortunately, these adsorbents are generally formed in powder or granular, which is difficult to regenerate, therefore the treatment process is very awkward.…”