Mining activities in Africa have significant environmental and health concern due to the improper disposal of mining waste. This waste contaminates soil, water and ecosystems posing a serious risk to biodiversity and local communities. To tackle these challenges, innovative waste management strategies are needed. In this study, heavy metals like copper, lead, and zinc from mining waste...
In the environment, chromium is mainly found in two oxidation states: Cr(VI) and Cr(III). Cr(VI) is relatively mobile in the environment and is extremely toxic, mutagenic [1,2], teratogenic [3] and carcinogenic [4,5]. In contrast, Cr(III) exhibits relatively low toxicity [6] and is a necessary nutrient for humans and animals [7,8]. Therefore, the reduction of Cr(VI) to Cr(III) is...
This paper investigates the quality of long-period precipitation data in Burkina Faso by integrating ground measurements from the Agence Nationale de la Météorologie (ANAM) with satellite-derived precipitation products such as PERSIANN and IMERG data. The primary objectives are to detect rainfall events, assess measured quantities, and identify outliers or erroneous data in the precipitation...
Mesoporous solids have found wide uses in catalysis, adsorption, molecular separations, gas and energy storage, among others. Indeed, precise structure-function relations of guest molecules in pores are rightly obtained when accurate knowledge of the confining space is available. At present, most approaches for pore characterization consider disordered porous materials as individual collection...
Mesoporous solids exhibit structural disorder which strongly influences confined fluid properties. This renders quantification of structural disorder and its correlation with physical properties of confined matter a necessary step towards their optimization in practical applications. In this work, we present advances made in the understanding of correlations between the phase state and...
The main source of energy for many African families is firewood. Exploitation of this resource is at the root of deforestation, leading to accelerated environmental degradation, with its corollaries of climate change and soil impoverishment. The approach proposed in this paper has a dual objective, namely to provide an alternative energy production technique for household needs, and to...
Samples of phosphorites from different occurrences of the Kotchari deposits, Burkina Faso, were studied. They are phosphorites that are fine-grained with small quantities of clay. The chemical analyses by XRF indicate a CaO content of 35.98 to 41.33 wt%. and a P2O5 contents of 26.85 to 30.75 wt%.
The XRD patterns shows that the major phases are Carbonate-Fluorapatite (Francolite), ...
Naturally Occurring Radioactive Materials (NORMs) have always been present in a variety of concentrations in every part of the earth’s mantle and in the tissue of every living being.\nNatural radioactivity can be found almost everywhere; in soil, public water supplies, soil and atmosphere. NORMs give rise to a measurable exposure to human beings. In the present study, soil samples and water...
We present simulation results of the evolution of stresses and strains in an unsaturated low-swell soil road embankment subjected to hydro-mechanical pressures using the finite element code CODE_BRIGHT. We assume that this bitumen-bearing backfill follows the Barcelona thermo-elasto-plastic model (BBM-TEP). This model describes the thermo-hydro-mechanical (THM) behavior of unsaturated fine...
Atmospheric conditions such as air temperature, wind speed, evapotranspiration, and relative humidity have an influence on the surface soil moisture. This communication presents a modelling of water transfers in unsaturated soil, as well as the numerical simulation of these transfers. The model takes into account the physical and hydrodynamic characteristics of unsaturated soils that interact...
