Using capacitive deionisation for inland brackish groundwater desalination in a remote location
Using capacitive deionisation for inland brackish groundwater desalination in a remote location
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DOI：
10.1016/j.desal.2012.05.021
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发表时间：
2013-01
期刊：
影响因子：
9.9
通讯作者：
M. Mossad;Wei Zhang;L. Zou
中科院分区：
文献类型：
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作者：
M. Mossad;Wei Zhang;L. Zou
在这项工作中，一个便携式原型的电容去离子（CDI）的单位已被用于第一次在Wilora，在澳大利亚北领地的一个偏远地区的社区，从微咸水中去除盐。CDI装置在偏远的苦咸水水源显示出足够的盐度和硬度去除能力。发现增加的流速导致总溶解固体去除效率的降低。然而，就能源效率而言，较高的流速往往是有利的。根据目前CDI装置的配置和当地的水质条件，推荐7 L/min为最佳运行参数，处理水能耗约为1.89kWh/m3。总水回收率在75%至80%之间。NaCl在100对电极的CDI电池组件上的电吸附遵循Langmuir吸附等温线和准一级吸附动力学。便携式CDI装置被证明是微咸水处理的可行替代解决方案，特别是在偏远地区的社区，在那里建造反渗透处理厂是不切实际的。本文的数据和结果可作为指导现场使用这一新兴技术的操作。
In this work, a portable prototype of capacitive deionisation (CDI) unit has been used first time in Wilora, a community in a remote area in Northern Territory, Australia, to remove salt from the brackish groundwater. The CDI unit has demonstrated sufficient salinity and hardness removal ability at the remote brackish water source. It was found that increased flow rate resulted in a decrease of the overall total dissolved solids removal efficiency. However, in terms of energy efficiency, a higher flow rate tended to be favourable. With the current CDI unit configuration and local water conditions, 7L/min is recommended as the optimal operational parameter, with an energy consumption of around 1.89kWh/m3of treated water. The total water recovery rate was between 75 and 80%. The electrosorption of NaCl onto the CDI cell assembly of 100 pair electrodes follows Langmuir adsorption isotherm and the pseudo-first-order adsorption kinetics. The portable CDI unit proves to be a viable alternative solution to brackish water treatment, especially in communities in remote areas where building a reverse osmosis treatment plant is not practical. The data and results shown in this work can be used as guidance for the on-site operation using this emerging technology.