Adsorption of Cu2+ on new hyper-crosslinked polystyrene adsorbent: Batch and column studies
Adsorption of Cu2+ on new hyper-crosslinked polystyrene adsorbent: Batch and column studies
复制标题
Cu2 在新型超交联聚苯乙烯吸附剂上的吸附：批量和柱研究
DOI：
10.1016/j.cej.2011.10.022
复制
发表时间：
2011-12
影响因子：
15.1
通讯作者：
Aimin Li
中科院分区：
文献类型：
--
作者：
Jinnan Wang;Li Xu;Ying Meng;Cheng Cheng;Aimin Li
制备了一种新型超交联聚苯乙烯吸附水中Cu2+的吸附剂WJN-101，并以IRC-84和D-110为参考，对其吸附性能进行了测试。WJN-101对Cu2+的吸收量在pH值较高时较高，在酸性介质中吸收量较低。当温度在278 ~ 308k范围内升高时，wjn -101的吸附焓变化约为22.24 ~ 28.89kJmol−1，自由能变化约为−5.71 ~−5.90kJmol−1。间歇动力学研究表明，吸附Cu2+可以很好地拟合为准二阶方程，表明颗粒内扩散过程是吸附过程的限速步骤。利用Elovich方程计算了三种树脂对Cu2+的初始吸附率，WJN-101、IRC-84和D-110的初始吸附率分别为11.50、2.46和9.88mg(gmin)−1。该模型能很好地拟合WJN-101吸附柱对Cu2+的吸附数据，并能成功地用于在可行流速和树脂层高度范围内设计吸附柱。2% HCl溶液可以作为有效洗脱剂对WJN-101吸附的Cu2+进行解吸。
In this paper, a new hyper-crosslinked polystyrene adsorbent WJN-101 for removal of Cu2+from the water was prepared and its adsorption capacity was tested by using the commercial resins IRC-84 and D-110 as references. The higher uptake capacity of Cu2+by WJN-101 was achieved at higher pH values, and the lower uptake capacity was observed in an acidic medium. When the temperature was raised within the range of 278–308K, the adsorption enthalpy changes of WJN-101were about from 22.24 to 28.89kJmol−1, and the free energy changes were about from −5.71 to −5.90kJmol−1. The batch kinetic study indicated that the adsorption of Cu2+could be well fitted by the pseudo-second-order equation, suggesting intra-particle diffusion process as the rate-limiting step of the adsorption process. By using the Elovich equation, the initial adsorption rates of Cu2+onto three investigated resins were calculated, which was 11.50, 2.46, and 9.88mg(gmin)−1of WJN-101, IRC-84 and D-110, respectively. The column adsorption data of Cu2+on WJN-101 could be well fitted by the Thomas model, and it could be employed for the designing of adsorption columns over a range of feasible flow rates and resin bed height successfully. 2% HCl solution could be used as effective eluant to desorb the Cu2+adsorbed by WJN-101.
登录
查看更多内容
影响因子：
15.1
作者：
Su Lin;C. D. Kiang
通讯作者：
Su Lin;C. D. Kiang
影响因子：
12.8
作者：
W. E. Marshall;L. Wartelle
通讯作者：
W. E. Marshall;L. Wartelle
通过改性活性炭布上的吸附/电吸附去除废水中的铜离子
影响因子：
13.6
作者：
Huang, Chen-Chia;Su, Yu-Jhih
通讯作者：
Su, Yu-Jhih
影响因子：
3.9
作者：
Deng, SB;Ting, YP
通讯作者：
Ting, YP
影响因子：
13.6
作者：
Laus, Rogerio;Costa, Thiago G.;Favere, Valfredo T.
通讯作者：
Favere, Valfredo T.