Application of Porous N-Methylimidazolium Strongly Basic Anion Exchange Resins on Cr(VI) Adsorption from Electroplating Wastewater
Application of Porous N-Methylimidazolium Strongly Basic Anion Exchange Resins on Cr(VI) Adsorption from Electroplating Wastewater
复制标题
多孔N-甲基咪唑强碱性阴离子交换树脂吸附电镀废水中Cr(VI)的应用
DOI：
10.1080/01496395.2011.622331
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发表时间：
2012-01
影响因子：
2.8
通讯作者：
Ji Chen
中科院分区：
文献类型：
--
作者：
Yuefeng Deng;Ji Chen
合成了N-甲基咪唑功能化的多孔强碱性阴离子交换树脂（PCl），对其进行了表征，并应用于电镀废水中Cr（VI）的吸附。采用红外光谱和元素分析对氯化聚碳酸酯的结构和官能团含量进行了表征。实验结果表明，在pH 2.0-5.0范围内，PCl对Cr（VI）的吸附容量均在139 mg g−1以上，且在0.2 mol L−1 NaOH + 0.2 mol L−1 NaCl的混合溶液中，Cr（VI）可被轻易解吸。采用PCl树脂沉淀技术成功地从电镀废水中分离回收了有毒的Cr（VI）和共存的Cr（III）、Fe（III）、Cu（II）、Zn（II）、Ni（II）和Al（III）重金属。Cr（VI）经分离沉淀后可得到纯度大于99%的有价值的工业产品BaCrO 4。在pH值为8.0 ~ 9.0的范围内，其它重金属的回收率均在99%以上。采用以PCl为基础的高效、经济、清洁工艺处理后，水中总Cr、Cr（VI）等重金属浓度均低于国家排放标准。
The porous N-methylimidazolium functionalized strongly basic anion exchange resins (PCl) were synthesized, characterized and applied for Cr(VI) adsorption from electroplating wastewater. FT-IR and elemental analysis of PCl were used to characterize the structure and the content of functional groups of PCl. The bath model results show that the adsorption capacities of PCl for Cr(VI) are above 139 mg g−1 at pH range 2.0–5.0, and the Cr(VI) can be easily desorbed with the mixture solution of 0.2 mol L−1 NaOH + 0.2 mol L−1 NaCl. PCl resins with precipitation technologies were successfully used for the separation and recovery of toxic Cr(VI), and co-existing Cr(III), Fe(III), Cu(II), Zn(II), Ni(II), and Al(III) heavy metals from electroplating wastewater in the bench scale. Cr(VI) was separated and precipitated as value industrial product BaCrO4 with purity higher than 99%. The recovery yields of other heavy metals are more than 99% within the optimum pH values range from 8.0 to 9.0. After the treatment of the wastewater using PCl-based high efficient, economical and clean technique, the concentrations of total Cr, Cr(VI) and other heavy metals in water are less than the national emission standard.
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DOI：
10.1016/s0016-0032(17)90938-x
发表时间：
--
影响因子：
4.1
作者：
I. Langmuir
通讯作者：
I. Langmuir
影响因子：
5.1
作者：
Trochimczuk, AW;Kabay, N;Streat, M
通讯作者：
Streat, M
影响因子：
5.1
作者：
V. Neagu;E. Avram;G. Lisa
通讯作者：
V. Neagu;E. Avram;G. Lisa
影响因子：
6.1
作者：
Xiaoqi Sun;Yang Ji;F. Hu;B. He;Ji Chen;Deqian Li
通讯作者：
Xiaoqi Sun;Yang Ji;F. Hu;B. He;Ji Chen;Deqian Li
影响因子：
8.6
作者：
Yong-gang Zuo;Ji Chen;Deqian Li
通讯作者：
Yong-gang Zuo;Ji Chen;Deqian Li