The inability of crop roots to penetrate subsoil layers in some Natal sandy soils and the associated low yields are the result of toxic quantities of aluminium. The phenomenon which is common in acid sandy soils in Naltal may be easily remedied by deep liming or leaching with gypsum.

The concentrations of Ca, S, Al, Si, Na, and K in the pore solutions of ordinary Portland cement and white Portland cement pastes were measured during the first 28 d of curing at temperatures ranging from 5–50 jC. Saturation indices with respect to solid phases known to form in cement paste were calculated from a thermodynamic analysis of the elemental concentrations. Calculated saturation leve...

It has been established that the extraction of aluminum from rocks containing large amounts alkali-soluble silicates and iron oxides can be processed by acid-alkali method, except for formation wasted sludge. The carried out thermodynamic analysis showed possibility carrying process reduction a mixture sulphate salts with hydrogen. optimal conditions sulphates hydrogen have found production S2 ...

The desilication effects of aluminium sulphate and sodium aluminate on kraft bamboo pulp during the cooking process were investigated in this study. Furthermore, the residual aluminium ion concentration in the resulting black liquor was measured by inductively coupled plasma atomic emission spectrometry (ICP-AES) to evaluate the scaling properties of black liquor during the evaporation process....

Mining activities are inevitable for the growing industrialization and urbanization in world. Disposal of mine tailings creates a severe impact to environment ultimately society. Identifying applications as potential secondary raw materials would help mining industries achieving circular economy. Alkali activation their utilization building or backfill sites is one such popular technique. In th...

Corrosion resistance of AA1070 aluminum alloy (AA1070) was compared to reinforced with alumina at weight composition (wt. %) 5% and 10%, grain size 150 nm 600 nm. Potentiodynamic polarization open circuit potential analysis were employed in 0.0125 M H2SO4, 3.5% NaCl H2SO4-3.5% solutions. Data showed solution the most deleterious peak corrosion rate value 6.682 mm/y while weakest 0.084 mm/y. wt....