【作者】 尚军； 吴燕燕； 李来好； 杨贤庆； 刁石强； 陈胜军； 岑剑伟；

【Author】 SHANG Jun1,2, WU Yan-yan1*, LI Lai-hao1, Yang Xian-qing1, Diao Shi-Qiang1, Chen Sheng-jun1, Cen Jian-wei1 (1. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300 2. Guangdong Ocean University, Zhanjiang 524088)

【机构】 中国水产科学研究院南海水产研究所； 广东海洋大学食品科技学院；

【摘要】 本文以合浦珠母贝开珠后的贝壳为原料,研究制备碳酸钙、丙酸钙的工艺技术。通过分析贝壳粉颗粒大小和酸的品种、浓度及用量对酸溶率的影响,结果表明:100目的贝壳粉与4mol/L的盐酸,按固液比为1∶20,在40℃酸溶处理2h,酸溶率可达到99%,该酸溶液与Na2CO3溶液按9∶5(V/V)时,碳酸钙得率最高;利用L9(34)正交试验优化丙酸钙工艺,结果表明,最佳工艺条件为碳酸钙与水的比例1∶40(W/V),碳酸钙与丙酸比例1∶3(W/V),反应温度60℃,反应时间0.5h,丙酸钙产率为86%,产品纯度为83.4%。更多还原

【Abstract】 The technology of the preparation of calcium carbonate and calcium propionate from Pinctada martensii shell was studied. The particle size of Pinctada martensii shell power and acid varieties, concentrations, volume to dissolve acid were discussed. The results show that dissolve acid rate can reached 99% with the proportion of 1:20 (W/V) for the shell power of 100 mesh to 4 mol/L hydrochloric acid in 2 h at 40 ℃.The yield of calcium carbonate is highest with a proportion of 9:5 (V/V) for hydrochloric acid solution to sodium carbonate solution. Using the orthogonal test L9(34) calcium propionate optimization technique, the results show that the best technological conditions for the proportion of 1:40 (W/V) for calcium carbonate to water, the proportion of 1:3 (W/V) for calcium carbonate to propionate acid by stired for 0.5 h at 60 ℃, the rate of calcium propionate are 86% and its purity achieves 83.4%.更多还原