October 2009
Lixiviation of manganiferrous aluminosilicate mineral in hydrochloric acid
A study of the lixiviation of Manganiferrous Aluminosilicate Mineral in hydrochloric acid has been undertaken. Experiments on quantitative lixiviation of the mineral showed that its dissolution rate depends on hydrogen ion concentration, reaction temperature and particle size. The activation energy calculated from the experimental data was 34.19 kJ/mole and this suggests a diffusion controlled mechanism. A reaction...
October 2009
Evaluating the efficiency of a textile wastewater treatment plant located in Oshodi, Lagos
The major part of textile processes is based on chemical reactions carried out in aqueous heterogeneous systems which eventually generates effluents of extremely variable composition and constitute an environmental risk of major concern. This study, focused on investigating the characteristic of effluent from textile industry which generates about 1577 m3 wastes per day and the effectiveness of the wastewater...
October 2009
Antioxidant and anticancer activities of doum fruit extract (Hyphaene thebaica)
The antioxidant capacity of doum fruit extract and the total phenolic content were analyzed. The antioxidant capacity was estimated by DPPH and iron chelating assays. Quercetin, ascorbic, BHT and tannic were used as positive controls. Also the effect of doum extract on viability of acute myeloid leukemia was studied. The results showed that the total phenolic content were 0.5 µg/ 3 µg dried extract sample as...
October 2009
Nano-Titanium dioxide (TiO2) mediated simple and efficient modification to Biginelli reaction
We report an efficient titanium dioxide (TiO2) nanopowder catalyzed and microwave induced, much improved modification to original Biginelli reaction reported in 1893 involving fast reaction kinetics. Key words: Titanium dioxide, biginelli reaction, microwave, fast kinetics.
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