牡蛎壳制备活性钙

Extracting Activated Ca from Oyster Shell

为充分利用牡蛎壳的钙资源 ,对乙醇在不同浓度、不同烧煮时间、不同配比条件对牡蛎壳粉中钙的活化效果及不同浓度的乳酸对活性钙的提取效果进行了研究。结果表明 :以活化温度 12 0℃ ,m(牡蛎壳粉 ) / g∶V(酒精 ) / m L为 1∶ 5,烧煮时间 3.5h活化效果最好 ;用体积分数为 85%乳酸提取钙的效果最佳。由牡蛎壳制备的乳酸钙含水分 1.9% ,游离酸 1.6% ,乳酸钙 95.1% ,磷 0 .3% ,钙 14.8%。

To make good use of rich ca resource about oyster shell . The effects that alcohol activates Ca in different consistence , different calcine time , different ratio of and lactic acid extract Ca from oyster shell were studied in this paper. The result indicates that the optimum active conditions involve the ratio of oyster shell to alcohol 1∶5 ( m/V ) ,temperature 120℃,3.5 hours , the optimum extractive condition is 85% lactic acid . Activated Ca made by oyster shell contains 1.9% water , 1.6% free acid , 95.1% Calcium Lacatate , 0.3%P , 14.8% Ca .