Process for Selective Removal and Concentration of Actinides and Heavy Metals from Water

Density-functional studies of hydrogen peroxide adsorption and dissociation on MoO3(100) and H0.33MoO3(100) surfaces

“…30 In a similar fashion, Th, Nd and Pb ions can also be separated from water and immobilized by reaction with the bronze. 31,32 For peroxide compounds, it was found that the molybdenum hydrogen bronze can successfully decompose triacetone triperoxide by reacting with the peroxide groups and concomitantly oxidize the molybdenum reagent turning the initial deep blue colour to yellow. 33 In this paper, we have modelled adsorption and possible decomposition of hydrogen peroxide on the MoO 3 (100) and H 0.33 MoO 3 (100) surfaces using density-functional calculations to gain insight into the possible mechanisms for the decomposition reaction on the bronze surface.…”

Direct conversion of a nanometric suspension of molybdenum trioxide into nanometric lead molybdate

“…Apblett and coworkers have previously shown that bulk molybdenum trioxide reacts with heavy metals, actinides, and lanthanides to form metal molybdates. [28][29][30][31][32] The work reported herein was prompted by the reported "solubility" of molybdenum trioxide that appears to be due to formation of a nanoparticulate suspension in water that suggested a solution-based procedure for production of metal molybdates was possible. Therefore, a solution was produced by refluxing excess solid MoO 3 (5.0 g L −1 ) in deionized water for 24 h followed by filtration to remove the surplus solid.…”

Sorption of lead from aqueous solutions by a commercially available tungsten trioxide nanopowder

“…There has, however, been concerns raised on the validity of the linear pseudo secondorder model due to a spurious correlation. 29 The nonlinear pseudo second-order equation was also used for modeling the sorption process, in the form:…”

“…19,[23][24][25] Apblett et al have demonstrated the attractiveness of using transition metal oxides as water remediation technologies. [26][27][28][29][30][31] More specically, they have highlighted the highly reactive nature of molybdenum trioxide towards Pb 2+ in aqueous systems, showing a very high capacity (110% by weight). 30,32 However, due to the slight solubility of molybdenum trioxide in water, it is possible that toxicity issues may make the use of MoO 3 unsuitable for the purication of potable water.…”