Adsorption of lead, zinc and cadmium ions on polyphosphate-modified kaolinite clay
The aim of this research work is to determine the potential of application of sodium polyphosphate-modified kaolinite clay as an adsorbent for the removal of lead (II), zinc (II) and cadmium (II) ions from aqueous solutions. The adsorbent dosage, pH, temperature and contact time were investigated. The adsorption isotherms of all three metal ions followed well Langmuir equation. Modified sodium...
Sulphur dioxide as indoor pollutant in Kano municipality Kano-Nigeria
Indoor sulphur dioxide concentration in Kano has been attributed to closed structured building pattern, substandard housing conditions and use of firewood. Samples of the gas were measured in the different residential districts within the Kano Metropolis; the high medium and low density residential districts. The distribution within the municipality is skewed towards high frequency of low concentrations with...