接枝亲水型高分子的丝瓜络对水中重金属离子的吸附行为

发布时间：2018-05-11 08:08

本文选题：丝瓜络 + 接枝聚合　；参考：《高等学校化学学报》2017年04期

【摘要】：采用接枝聚合的方法将亲水性聚丙烯酰胺接枝到丝瓜络上,部分水解的聚丙烯酰胺的接枝率可高达161.3%.选择典型的Cu~(2+)和Pb~(2+)体系,研究亲水型丝瓜络对水中重金属离子的吸附行为.结果表明,在单离子体系中,准二级动力学方程适于描述亲水型丝瓜络吸附动力学过程,饱和吸附量随着接枝率和pH值增加而增大,对Cu~(2+)和Pb~(2+)的最大饱和吸附量分别为647和887 mg/g.Langmuir和Freundlich等温吸附模型都适合描述等温吸附过程.8次吸附-解吸附循环实验表明,饱和吸附量基本保持恒定,同时对吸附机理进行了讨论.
[Abstract]:Graft copolymerization of hydrophilic polyacrylamide onto the Luffa Luffa collaterals. The graft ratio of partially hydrolyzed polyacrylamide can be up to 161.3%. to select typical Cu~ (2+) and Pb~ (2+) system. The adsorption behavior of hydrophilic Luffa complex on heavy metal ions in water is studied. The results show that the quasi two stage kinetics Fang Chengshi in the single ion system is in the single ion system. The adsorption kinetics of hydrophilic Luffa Luffa is described. The saturated adsorption capacity increases with the increase of the grafting rate and pH value. The maximum saturated adsorption capacity of Cu~ (2+) and Pb~ (2+) is 647 and 887 mg/g.Langmuir and Freundlich isothermal adsorption models are suitable for describing the.8 adsorption desorption cycle experiment of isothermal adsorption process, which shows that the saturated adsorption capacity is saturated. Basically, the adsorption mechanism is discussed.

【作者单位】：长春工业大学材料科学高等研究院;中国科学院长春应用化学研究所高分子物理与化学国家重点实验室;
【基金】：国家自然科学基金(批准号:51673030)资助~~
【分类号】：X703;O647.3

【相似文献】