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This research was to conduct a chemical test to ascertain the percentage content and suitability of periwinkle shell wastes for glass industry. Results of the study show that periwinkle shells contain a high percentage (38.4%) of calcium oxide (Ca0). Other important oxides which were also found in substantial percentage were silicon iv oxide (SiO2): 0.014%; magnesium oxide (MgO) 18.70%; Aluminium trioxide (Al2O3): 0.211% and Iron oxide (Fe2O3): 0.019%. The result is discussed with particular reference to the glass industry.


Key words: Periwinkle shells, calcium oxide, mollusc, glass industry.


(Global Journal of Pure and Applied Sciences: 2003 9(4): 491-494)