This article discusses the deposition of different amount of microstuctured poly(3,4-ethylenedioxythiophene) (PEDOT) on reticulated vitreous carbon (RVC) by electrochemical method to prepare three-dimensional (3D) PEDOT/RVC electrodes aimed to be used in capacitive deionization (CDI) technology. A CDI unit cell has been constructed here in this study. The performance of CDI cell in the ion removal of NaCl onto the sites of PEDOT/RVC electrode has been systematically investigated in terms of flow-rate, applied electrical voltage, and increasing PEDOT loading on PEDOT/RVC electrodes. It is observed that the increase in flow-rate, electric voltage, and PEDOT loading up to a certain level improve the ion removal performance of electrode in the CDI cell. The result shows that these electrodes can be used effectively for desalination technology, as the electrosorption capacity/desalination performance of these electrodes is quite high compared to carbon materials. Moreover, the stability of the electrodes has been tested and it is reported that these electrodes are regenerative. The effect of increasing NaCl concentration on the electrosorption capacity has also been investigated for these electrodes. Finally, it has been shown that 1 m3 PEDOT-120 min/RVC electrodes from 75 mg/L NaCl feed solution produce 421, 978 L water per day of 20 mg/L NaCl final concentration.
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机译:本文讨论了通过电化学方法在网状玻璃碳(RVC)上沉积不同数量的微结构聚(3,4-乙撑二氧噻吩)(PEDOT),以制备用于电容性去离子的三维(3D)PEDOT / RVC电极(CDI)技术。在这项研究中,这里已经构建了CDI晶胞。从流速,施加电压和增加PEDOT / RVC电极上的PEDOT负载方面,已经系统地研究了CDI电池在NaCl离子去除PEDOT / RVC电极上的离子中的性能。可以观察到,流速,电压和PEDOT负载的增加达到一定水平,可以改善CDI电池中电极的离子去除性能。结果表明,这些电极可以有效地用于脱盐技术,因为与碳材料相比,这些电极的电吸附能力/脱盐性能非常高。此外,已经测试了电极的稳定性,并且据报道这些电极是可再生的。对于这些电极,还研究了增加NaCl浓度对电吸附容量的影响。最后,结果表明,由75 mg / L NaCl进料溶液中的1 m 3 sup> PEDOT-120 min / RVC电极每天可产生421,978 L水,最终浓度为20 mg / L NaCl。
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