Investigation of Molybdate Ion Sorption on the Sorbent From Industrial Waste

Abstract

Abstract. 1 The dependence of molybdate ion sorption in co-precipitated iron and manganese hydroxides (CPH) on the value of pH solutions and the salt background has been described. Industrial wastes of manganese sulfate MnSO 4 ·5H 2 O (from hydroquinone production) and iron sulfate FeSO 4 ·7H 2 O (waste production of titanium dioxide pigment) were used for the obtaining of CPH hydroxides.

Interactions of Cd2+, Co2+ and MoO42− Ions with Crushed Concrete Fines

“…The 5-year laboratory-prepared CCF used in this study have been shown to remove 45.2, 38.4 and 56.0 mg g −1 of Cd 2+ , Co 2+ and MoO 4 2− , respectively, under steady state conditions from single metal nitrate solutions of up to 1500 ppm (Figure 5). The equilibrium uptakes of Cd 2+ , Co 2+ and MoO 4 2− by CCF are compared with those of other cement-based and inorganic sorbents in Table 5 [5,6,[13][14][15]32,[40][41][42][43][44][45][46][47][48]. The removal capacity of CCF for Co 2+ and MoO 4 2− was found to be superior to those of other sorbents reported in the literature; whereas the uptake of Cd 2+ appeared in the middle of the range (Table 5).…”