| 荷电耐污染超滤膜分离、纯化海藻酸钠的研究 |
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| 引用本文： | 曾淦宁,沈江南,洪凯,阮慧敏.荷电耐污染超滤膜分离、纯化海藻酸钠的研究[J].海洋通报,2010,29(1). |
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| 作者姓名： | 曾淦宁 沈江南 洪凯 阮慧敏 |
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| 作者单位： | 浙江工业大学化学工程与材料学院海洋系,浙江,杭州,310014 |
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| 基金项目： | 浙江省农业财政项目“以海定陆,海陆联动”海洋污染监控机制研究;;卫星海洋环境动力学国家重点实验室开放课题(SOED0608);;化材学院教改项目“海洋技术专业培养体系的改革与实践”课题资助 |
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| 摘 要： | 采用PAN(聚丙烯腈)、季胺化的PAN-CO-DMAEMA、DMF等混合溶液制备荷电耐污染超滤膜。在改进消化条件的基础上,对酸凝—酸化法提取海藻酸钠的工艺做了进一步优化。得到的较佳工艺条件为:先用1%甲醛溶液浸泡海带4h,用4%Na2CO3溶液常温消化3h后,用盐酸溶液沉淀出海藻酸,用1%Na2CO3中和海藻酸胶块,再用90mL浓度为10%的次氯酸钠溶液脱色1h,采用膜分离技术超滤后加入无水乙醇析出絮凝状海藻酸钠,最后烘干至恒重,粉碎得海藻酸钠成品。分析结果表明,海藻酸钠性征和得率均有明显改善。
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| 关 键 词： | 荷电超滤 耐污染 海藻酸钠 |
Separation and purification of sodium alginate by using charged fouling resistance ultra filtration membrane |
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| ZENG Gan-ning,SHEN Jiang-nan,HONG Kai,RUAN Hui-min.Separation and purification of sodium alginate by using charged fouling resistance ultra filtration membrane[J].Marine Science Bulletin,2010,29(1). |
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| Authors: | ZENG Gan-ning SHEN Jiang-nan HONG Kai RUAN Hui-min |
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| Institution: | Department of Oceanography;College of Chemical Engineering and Materials Science;Zhejiang University of Technology;Hangzhou 310014;China |
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| Abstract: | Based on the improved digestion conditions,the ultra filtration technology was used to optimize the traditional acid condensate-acidification in extraction of the sodium alginate from the kelp.Membrane prepared from the mixed solution of PAN,PAN-CO-DMAEMA,DMF could be resistant to higher pollution than the conventional PAN membrane.The optimum conditions combined with the UF technology could be described as:firstly,soak kelp four hours with 1% formaldehyde solution;secondly,digest the sample with 4% Na 2 CO... |
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| Keywords: | Charged ultrafiltration Pollution-resistant Sodium alginate |
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