不同孔径的阴离子交换树脂对芳香磺酸的吸附性能研究
发布时间：2018-08-12 07:46
【摘要】：芳香族磺酸类化合物作为一类应用十分广泛的化工产品,在其生产和使用过程中会产生大量的有机废水。这类废水排放量大、浓度高、难处理,对环境的污染十分严重,其处理及回收技术受到广泛关注。本研究通过改变交联度和致孔剂含量合成不同孔结构的四种弱碱阴离子交换树脂QL-6-1、QL-6-2、QL-15、QL-30。通过QL-6-1、QL-6-2、QL-15、QL-30和商品化树脂D301对水溶液中2-萘磺酸和茜素绿的单组份静态吸附试验,研究了树脂对这两种芳香族磺酸化合物的吸附行为,并讨论了pH值、温度、Na2S04含量等因素对树脂吸附的影响,通过动力学实验研究了孔结构对吸附速率的影响,并研究了树脂对2-萘磺酸-茜素绿复合体系的动态竞争吸附及脱附行为。试验结果表明,树脂吸附2-萘磺酸的和茜素绿的最佳pH区间均为1-2。Freundlich模型能够较好的拟合树脂对2-萘磺酸的吸附行为,树脂对水溶液中2-萘磺酸的吸附容量大小顺序为：QL-6-1QL-6-2D301QL-15QL-30; Langmuir模型能够较好的拟合树脂对茜素绿的吸附,树脂对茜素绿吸附的拟合Qm顺序为：D301QL-15QL-30QL-6-1QL-6-2;吸附为自发的放热过程；大量Na2SO4的存在会抑制树脂对2-萘磺酸的吸附,与D301相比,QL-6-1、QL-15和QL-30均具有更优越的抗盐性；准二级动力学模型能够较好地拟合芳香磺酸在树脂上的吸附动力学数据,拟合的k2值的大小顺序为：QL-30QL-15QL-6-2QL-6-l,吸附过程为颗粒扩散控制：QL-6-1和QL-30对2-萘磺酸-茜素绿的复合体系动态吸附实验中,QL-30对较大分子尺寸的茜素绿有较高选择性；QL-6-1和QL-30对2-萘磺酸和茜素绿均能实现有效脱附,采用分步脱附的方法可以很好地进行树脂的脱附再生以及污染物的分类回收。
[Abstract]:As a kind of widely used chemical products, aromatic sulfonic acid compounds will produce a large amount of organic wastewater during their production and use. This kind of wastewater has the characteristics of large discharge, high concentration, difficult to treat, serious pollution to the environment, and its treatment and recovery technology has been paid more and more attention. In this study, four weak base anion exchange resins QL-6-1, QL-6-2 and QL-15 QL-30 with different pore structures were synthesized by changing the crosslinking degree and the content of pore-causing agent. The static adsorption of 2-naphthalene sulfonic acid (2-naphthalene sulfonic acid) and alizarin green (alizarin green) in aqueous solution by QL-6-1QL-15QL-30 and commercial resin D301 was studied. The adsorption behavior of the resin to these two aromatic sulfonic acids was studied, and the pH value was discussed. The effect of temperature and Na _ 2S _ 04 content on the adsorption rate of the resin was studied by kinetic experiments. The dynamic competitive adsorption and desorption of 2-naphthalenesulfonic acid-alizarin green composite system were also studied. The results showed that the optimal pH range of adsorption of 2-naphthalenesulfonic acid and alizarin green by resin was both 1-2.Freundlich model and the adsorption behavior of 2-naphthalenesulfonic acid on resin was well fitted. The adsorption capacity of 2-naphthalenesulfonic acid in aqueous solution was in the order of: QL-6-1QL-6-2D301QL-15QL-301QL-301QL-301QL-301QL-301.The adsorption of alizarin green was fitted by Langmuir model, and the Qm sequence of resin adsorption for alizarin green was: D301QL-15QL-30QL-6-2and the adsorption was spontaneous exothermic process. The presence of a large amount of Na2SO4 can inhibit the adsorption of 2-naphthalenesulfonic acid, and the QL-6-1 QL-15 and QL-30 have better salt resistance than D301, and the quasi-second-order kinetic model can better fit the adsorption kinetic data of aromatic sulfonic acid on the resin. The order of K _ 2 fit is: 1: QL-30QL-15QL-6-2QL-6-l.The adsorption process is particle diffusion control and QL-30 has high selectivity for alizarin green with larger molecular size in the dynamic adsorption experiment of 2-naphthalenesulfonic acid-alizarin green composite system. QL-6-1 and QL-30 can effectively desorb 2-naphthalenesulfonic acid and alizarin green. The method of stepwise desorption can be used for resin desorption regeneration and separation and recovery of pollutants.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
本文编号：2178395
[Abstract]:As a kind of widely used chemical products, aromatic sulfonic acid compounds will produce a large amount of organic wastewater during their production and use. This kind of wastewater has the characteristics of large discharge, high concentration, difficult to treat, serious pollution to the environment, and its treatment and recovery technology has been paid more and more attention. In this study, four weak base anion exchange resins QL-6-1, QL-6-2 and QL-15 QL-30 with different pore structures were synthesized by changing the crosslinking degree and the content of pore-causing agent. The static adsorption of 2-naphthalene sulfonic acid (2-naphthalene sulfonic acid) and alizarin green (alizarin green) in aqueous solution by QL-6-1QL-15QL-30 and commercial resin D301 was studied. The adsorption behavior of the resin to these two aromatic sulfonic acids was studied, and the pH value was discussed. The effect of temperature and Na _ 2S _ 04 content on the adsorption rate of the resin was studied by kinetic experiments. The dynamic competitive adsorption and desorption of 2-naphthalenesulfonic acid-alizarin green composite system were also studied. The results showed that the optimal pH range of adsorption of 2-naphthalenesulfonic acid and alizarin green by resin was both 1-2.Freundlich model and the adsorption behavior of 2-naphthalenesulfonic acid on resin was well fitted. The adsorption capacity of 2-naphthalenesulfonic acid in aqueous solution was in the order of: QL-6-1QL-6-2D301QL-15QL-301QL-301QL-301QL-301QL-301.The adsorption of alizarin green was fitted by Langmuir model, and the Qm sequence of resin adsorption for alizarin green was: D301QL-15QL-30QL-6-2and the adsorption was spontaneous exothermic process. The presence of a large amount of Na2SO4 can inhibit the adsorption of 2-naphthalenesulfonic acid, and the QL-6-1 QL-15 and QL-30 have better salt resistance than D301, and the quasi-second-order kinetic model can better fit the adsorption kinetic data of aromatic sulfonic acid on the resin. The order of K _ 2 fit is: 1: QL-30QL-15QL-6-2QL-6-l.The adsorption process is particle diffusion control and QL-30 has high selectivity for alizarin green with larger molecular size in the dynamic adsorption experiment of 2-naphthalenesulfonic acid-alizarin green composite system. QL-6-1 and QL-30 can effectively desorb 2-naphthalenesulfonic acid and alizarin green. The method of stepwise desorption can be used for resin desorption regeneration and separation and recovery of pollutants.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X703
【参考文献】
相关期刊论文 前10条
1 张奎;袁慎峰;尹红;陈志荣;;络合萃取法预处理CLT酸生产废水研究[J];水处理技术;2014年01期
2 谢红梅;艾咏梅;陈爽;赵玲英;豆爱明;李仁炳;任建敏;;超高比表面积活性炭孔分布对氢气储存性能的影响[J];重庆工商大学学报(自然科学版);2013年05期
3 李跃金;李营;李长海;;改性树脂对β-萘磺酸的吸附性能[J];环境工程学报;2013年02期
4 钟倩倩;岳钦艳;李倩;李颖;许醒;高宝玉;;改性麦草秸秆对活性艳红的吸附动力学研究[J];山东大学学报(工学版);2011年01期
5 丁正丹;张洪林;;高级氧化技术在难降解有机废水中的研究及应用[J];化学与粘合;2010年04期
6 王艳青;杨林;薛丹;韩永博;;芳香族磺酸基化合物有机废水处理技术的研究进展[J];环境保护与循环经济;2010年07期
7 曹磊;;高级氧化技术在水处理中的研究与应用[J];污染防治技术;2008年04期
8 黄昱;李小明;杨麒;曾光明;刘精今;;高级氧化技术在抗生素废水处理中的应用[J];工业水处理;2006年08期
9 周家艳;李爱民;陈金龙;;pH和盐对树脂吸附芳香酸的影响研究[J];离子交换与吸附;2006年04期
10 杨维本;李爱民;蔡建国;孟冠华;张全兴;;不同孔分布的丙烯酸酯吸附树脂对表面活性剂的吸附[J];中国科学(B辑 化学);2006年03期
相关硕士学位论文 前2条
1 李慧;脂肪酸和磺酸盐浮选药剂的生物降解性研究[D];武汉理工大学;2010年
2 柴丽敏;大孔弱碱性阴离子交换树脂D301R处理DSD酸还原废水的研究[D];天津大学;2005年
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