中文摘要：

采用石墨基体NiHCF膜电极组装填充床电化学反应器,考察二电极流动体系下溶液中Cs离子的电化学控制分离性能。在膜电极上施加阴极电压使Cs＋置入膜内,分别考察操作电压、进料浓度和流量等参数对反应器出水Cs＋浓度的影响,并用Thomas模型描述该过程的穿透曲线;将置入Cs＋的膜电极外加阳极电压释放Cs＋使膜电极再生,并通过连续多批次运行测试膜电极的稳定性。研究结果表明：石墨基体NiHCF膜在二电极体系下具有良好的电控吸附性能和再生能力,槽电压10V、流速80BV·h-1、进料浓度7mg·L-1、穿透率为50%时可处理225BV的模拟废液,单次运行Cs离子平均去除率可达56%,电控吸附过程符合Thomas吸附动力学模型。膜电极氧化再生快捷方便,多批次运行性能稳定,水溶液中Cs＋可得到有效分离。

英文摘要：

A two-electrode system was adopted to investigate the behavior of separating Cs＋ from its low concentration solution flowing through a packed bed reactor with NiHCF film electrodes as its work electrode.After separation,the Cs＋ concentration of the reactor outflow was analyzed by ion chromatography（IC） and the effects of operation parameters,such as the applied potential,inlet initial cesium concentration and flow rate,on the Cs＋ separation were studied.Moreover,the effect of positive potential added on the Cs＋ intercalated NiHCF film electrodes for their regeneration was also examined,and the stability of the film electrode was tested by continuous loading-unloading operations.The experiment results show that the NiHCF film electrodes loaded on graphite substrate can be used to separate the Cs ion effectively in two electrode system and have good regenerability.When the potential is 10 V,the initial Cs＋ concentration is 7 mg·L-1,the flow rate is 80 BV·h-1（BV is the bed volume） and the amount of treated simulation waste solution is 225 BV,the once-through average removal ratio of Cs＋ can reach 56%.The Thomas model was used to analyze the breakthrough curves of the Cs＋ adsorption process,and the results show that the electrochemically controlled ion adsorption process is accord with the Thomas kinetic model.