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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and characterization of cellulose ion exchanger. II. Pilot scale and utilization in dye heavy metal removal
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Synthesis and characterization of cellulose ion exchanger. II. Pilot scale and utilization in dye heavy metal removal

机译：纤维素离子交换剂的合成与表征。二。染料重金属去除的中试规模和利用

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Cotton fabric was converted into an ion exchanger by grafting it with (1) glycidyl methacrylate (GMA), followed by aminization with ethylene diamine; (2) di-methylaminoethyl methacrylate (DMAEMA), followed by quaternization; and (3) acrylic acid (AA). Grafting was carried out on a pilot scale using a thiocarbonate-H2O2 redox system. The so-obtained cotton graft copolymers were monitored for their ability to remove different dyes as well as heavy metals from aqueous solutions. It was found that the magnitude of dye exhaustion was as follows. For direct and reactive dyes the percentage of exhaustion follows the order of aminized GMA > quaternarized DMAEMA > DMAEMA, whereas for acid dye the percentage of exhaustion follows the order of quaternarized DMAEMA > DMAEMA > aminized GMA. On the other hand poly(AA)-cotton copolymer is very effective at removal of the basic dye. With respect to heavy metal ions removal, the copolymers show the following order: AA > aminized GMA > quaternarized DMAEMA > DMAEMA. While dichromate removal follows the order of quaternarized DMAEMA > DMAEMA > aminized GMA. (C) 1998 John Wiley & Sons, Inc. [References: 17]
机译：通过将棉织物接枝（1）甲基丙烯酸缩水甘油酯（GMA），然后用乙二胺胺化，将其转换成离子交换剂。 （2）甲基丙烯酸二甲基氨基乙基酯（DMAEMA），然后进行季铵化; （3）丙烯酸（AA）。使用硫代碳酸盐-H2O2氧化还原系统以中试规模进行接枝。监测如此获得的棉接枝共聚物从水溶液中去除不同染料以及重金属的能力。发现染料耗尽的程度如下。对于直接染料和反应性染料，耗尽百分比遵循以下顺序：胺化GMA>季铵化DMAEMA> DMAEMA;而对于酸性染料，耗尽百分比遵循季铵化DMAEMA> DMAEMA>胺化GMA。另一方面，聚（AA）-棉共聚物在去除碱性染料方面非常有效。关于重金属离子的去除，共聚物显示以下顺序：AA>胺化的GMA>季铵化的DMAEMA> DMAEMA。重铬酸盐的去除遵循四元化DMAEMA> DMAEMA>氨基化GMA的顺序。 （C）1998 John Wiley＆Sons，Inc. [参考：17]

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