Effect of component oxide interaction on the adsorption properties of mixed oxides

Phosphate removal from water using freshly formed Fe–Mn binary oxide: Adsorption behaviors and mechanisms

“…Meng and Letterman [16] found that the pH ZPC of Al(OH) 3 /SiO 2 suspension (4.5 mmol-Al/g-SiO 2 ) was 9.1 same as that of pure Al(OH) 3 . Anderson and Benjamin [13] also observed that the pH ZPC of Al-Fe binary oxide suspension approximated that of pure Al(OH) 3 .…”

The effects of anoxia on Si dynamics in sediments

“…Silicon has also been shown to have marked effects on iron oxide crystallization in several studies (Weber and Stumm 1965;Meng and Letterman 1993;Mayer and Jarrell 2000;Piispanen and Sallanko 2011), which could affect the cycling of P. Dissolved Si can inhibit the Ostwald process (recrystallization) and coagulation of iron oxides. These Siinduced effects lead to the formation of ferrihydrite instead of more crystallized Fe oxides, such as goethite or lepidocrocite.…”

Modeling and electrokinetic evidences on the processes of the Al(III) sorption continuum in SiO2(s) suspension

“…A number of studies on aluminum hydrolysis have emphasized the stoichiometry or kinetics of complex hydrolysis, precipitation, and surface chemical reactions of a pure aluminum system [9,10]. Some researchers [11][12][13][14] have pointed out that soluble aluminum has a high potential to form mixed oxides with other component oxides in natural environments, and the characteristics of such mixed oxides deviate significantly from either average collective properties for the group or a collection of discrete pure solid phases. However, the understanding of when and how the sorption continuum for Al(III), from soluble free ions to a surface or bulk oxide precipitate, proceeds in SiO 2(s) suspensions is quite limited.…”