Enhancement of aromatic and saturated hydrocarbon by modified column chromatographic technique

Three sediment samples collected from the Qua Iboe River System and eighteen different column packing ratios of silica gel and alumina were used in this investigation. The variation of the composition of the stationary phase (silica gel and alumina, SA) gave different yields of aromatic and saturated hydrocarbons. In all the sediments, the SA(1:2) column length ratio eluted the highest amount of saturated hydrocarbon; sediment I, 287ppm; sediment II, 347ppm; sediment III, 337ppm. The modified SA(2:1) column length ratio eluted the highest amount of aromatic hydrocarbons, 119ppm for sediment I; 90ppm for sediment II and 123ppm for sediment III. The modified AS2:1 weight ratio eluted the least amount of saturated hydrocarbon, sediment I,19ppm; sediment II, 30ppm and sediment III, 20ppm while the SA1:1 weight ratio eluted the least amount of aromatic hydrocarbon, sediment I, 8ppm; sediment II, 3ppm and sediment III,12ppm. Generally, the packing by column length ratios eluted higher concentrations of saturated and aromatic hydrocarbons than the packing by weight ratio and the difference is statistically significant. These differences in the yields of the aromatic and saturated hydrocarbons are due to differences in the relative adsorption of the aromatic and saturated hydrocarbons on the stationary phase and the moderating influence of the components of the stationary phase on each other.Keywords: hydrocarbon, enhancement, column length ratio, weight ratio, adsorptionGlobal Journal of Pure and Applied Sciences Vol. 12(2) 2006: 193-19

Enhancement of hydrocarbon recovery by modified solvent extraction

No Abstract. Global Journal of Pure and Applied Sciences Vol. 12(3) 2006: 347-35

Toxicological parameters of albino rats fed with extruded snacks from Aerial yam (Dioscoria bulbifera) and African breadfruit seed (Treculia africana)

In this study, safety of novel food from aerial yam and Treculia africana, underutilized food materials with high‐nutritive value and health benefits were investigated. Animal experiment involving the use of thirty (30) male albino rats was conducted for 28 days.Thereafter, rats in all groups were sacrificed and blood samples collected for biochemical analysis and hematological assay. Some vital organs were harvested and used for histological analysis. Biochemical and hematological parameters were not significantly p ≤ .05 different among the treatment and controls. However there was an increase in monocytes, which is a reflection of immune boosting potential of the novel snack. No significant pathological changes were observed in liver and kidney of rats fed with this snack. Rats showed no signs of toxicity within the study period. These findings suggest that product may be safe and useful as an Immune adjuvant