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交联羧甲基红薯淀粉吸附废水中Pb^2+的研究 被引量:6

Cross-Linked Carboxymethyl Sweet Potato Starch Removal Pb(Ⅱ) from the Aqueous Solution
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摘要 以红薯淀粉为原料,选用环氧氯丙烷作交联剂,氯乙酸作羧甲基化试剂,合成了交联-羧甲基复合变性淀粉,研究交联-羧甲基淀粉在水处理中吸附Pb2+的影响因素。结果表明,Pb2+的吸附量与取代度、淀粉量、Pb2+起始质量浓度、温度、pH和吸附时间有关,吸附符合朗缪尔的等温吸附线,淀粉再生能力良好。 In this manuscript, the cross-linking carboxymethyl double modified sweet potato starch was prepared by 2-chloroacetic acid 3-chlorol, 2-epoxypropare eatalyzing with alkaline, and the adsorption process of Pb(Ⅱ) ions from aqueous solution by water-insoluble cross-linked carboxymethyl starch was investigated. Results showed adsorption capacity for Ph(Ⅱ) relate to starch substitution degree, starch content, Pb (Ⅱ) initiation concentration, adsorption temperature, pH and adsorption time. The adsorption equilibrium data followed well the Langmuir isotherm model, cross-linked carboxymethyl sweet potato starch possed well regeneration capability.
出处 《食品与生物技术学报》 CAS CSCD 北大核心 2009年第1期113-116,共4页 Journal of Food Science and Biotechnology
关键词 红薯 交联-羧甲基淀粉 吸附 铅离子 sweet potato starch, cross-linked carboxymethyl starch,adsorption, Pb(Ⅱ) ions
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参考文献13

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