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摘要
先将壳聚糖(CTS)与甲酰氯经过酰氯化反应后,其产物再与戊二醛发生交联反应,得到具有较好吸附性能的交联壳聚糖(CCTS)。研究结果表明:CTS与戊二醛的质量配合比为1∶1,反应温度为65℃,pH为5.0,反应时间为3h的条件下,制得的CCTS的交联度最高可达87.35%,在中性废水中对铅离子(Pb2+)的吸附量最大达到 1.92mg/L。
Abstract
First chitosan (CTS) and formyl chloride occurred acylation reaction,the product and glutaraldehyde occurred crosslinking reaction.The cross-linked chitosan (CCTS) with good adsorption performance was produced.The optimum process parameters were obtained by optimizing the cross-linking reaction parameters.The mass ratio of CTS to glutaraldehyde was 1∶1,the reaction temperature of medium was 65℃,The crosslinking degree of CCTS was 87.35%.CCTS prepared under the optimum conditions was used to adsorb Pb2+ in aqueous solution at pH 5.0 and reaction time of 3h.The results showed that the adsorption capacity of Pb2+ was 1.92mg/L in neutral wastewater.
关键词
壳聚糖
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酰氯化反应
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交联反应
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工艺参数
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交联度
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吸附量
Key words
chitosan
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acylation reaction
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crosslinking reaction
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process parameters
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crosslinking degree
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adsorption capacity
新型壳聚糖交联改性物的制备及其性能研究[J].
化工新型材料, 2018, 46(1): 169-171 DOI:
[1] 孙胜玲,王丽,吴瑾,等.壳聚糖及其衍生物对金属离子的吸附研究(上)[J].高分子通报,2005(5):58-69.
[2] 王茹,唐兰模.壳聚糖吸附水溶液中微量Pb2+的研究[J].四川大学学报(工程科学),2001,33(3):55-57.
[3] 刘春禄,孙鹏程,刘辉.接枝交联改性壳聚糖吸附性能研究[J]青岛理工大学学报,2011,32(1):53-57.
[4] 丁纯梅,宋庆平,孔霞,等.壳聚糖/Pb2+模板壳聚糖膜与Pb2+螯合反应的动力学及机理探讨[J].无机化学学报,2004,20(6):711-713.
[5] 宋颖韬,张建宇,党明岩,等.交联壳聚糖对废水中Cu2+的吸附性能[J].电镀与精饰,2012,34(5):5-7.
[6] 朱贝贝,姚春才,周耀珍.交联改性壳聚糖的制备及其对Ni2+的吸附性能[J].环境科技,2013,26(2):15-16.
[7] 孙艳芳,刘芸.壳聚糖的交联改性及其吸附铜离子和铅离子的研究[J].西安交通大学学报,2013,47(11):127-132.
基金资助
安徽省教育厅自然科学研究基金资助项目(KJ2015Z100)
