Highly efficient sorption of molybdenum from tungstate solution with modified D301 resin

Abstract

The modified D301 resin is prepared by assembling TOA and D301 for efficient selective adsorption of MoS42− from tungstate solution.

Modification of ultrasound-pretreated montmorillonite using poly(diallyldimethylammonium chloride) for W and Mo separation and the sequential application in removal of heavy metals

“…This was similar to the results for (12.10) of trial number 8 ( Table 1 ), which had a deviation rate smaller than 5 %. This separation coefficient is comparable with those reported for other resins after recalculation using the applied definitions of the W/Mo separation coefficient [32] , [38] . Thus, the composite C 5.5 P 600 t 14 was selected for the subsequent heavy metals adsorption tests.…”

“…Under optimal conditions, applying vulcanizing agents (e.g., Na 2 S and NaHS) to transform molybdate (MoO 4 2- ) into MoS 4 2- and leave tungstate (WO 4 2- ) unvulcanized in solution is feasible [31] . Subsequently, the less hydrated MoS 4 2- are selectively removed using the strong-base anion exchange resin [32] . With such a protocol, a MoS 4 2- -loaded resin can be obtained without using expensive MoS 4 2- salts as the starting modification agents, realizing the successful separation of W and Mo and significantly reducing the cost.…”

Detection of hexavalent chromium in aqueous solutions using laser-induced fluorescence from ion exchanged resin

“…The surface morphology before and after adsorption can be seen from the SEM image of D301, 24 and the distribution of related elements is shown in Fig. 3.…”

Recovery of W–Mo Alloy Scrap and the Photochromic Properties of WO3/MoO3 Composite Products

“…The separation of waste materials containing W and Mo is commonly achieved by wet chemical techniques. These methods include the extraction method, ion exchange method, , and precipitation method . Typically, these separation techniques involve adjusting the pH value of the solution to alter the existing state of W and Mo ions .…”