Blue Refrigeration: Capacitive De-ionization for Brackish Water Treatment

Blue Refrigeration: Capacitive De-ionization for Brackish Water Treatment
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Blue Refrigeration:用于苦咸水处理的电容去离子

DOI:
10.1115/1.4037907
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发表时间:
2018
影响因子:
2.5
通讯作者:
Hatzell, Kelsey B.
Hatzell, Kelsey B.
中科院分区:
工程技术4区
文献类型:
--
作者:
Hatzell, Marta C.;Hatzell, Kelsey B.

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人们越来越关注最大限度地减少与海水淡化相关的能源和成本。为此,正在探索各种新的脱盐系统和方法。一个不断增长的领域的兴趣围绕电化学分离去离子。电化学分离主要包括从大量混合物中插入或电吸附感兴趣的物质的技术。这可以通过极化电池电极或更常见的电容电极来进行。一个例子是电容去离子(CDI)技术。CDI正在研究作为一种手段,以增加目前的最先进的,并作为一个独立的苦咸水处理技术。尽管这项技术具有潜力,但关于脱盐和盐水形成过程的能量学和效率仍然有很多未知之处。在这里,蓝色制冷是一个用于广泛描述脱盐循环和过程的术语。类比的目的是比较与脱盐循环相关的能量学与在热制冷循环中充分研究的能量学。这种观点的目的是评估与CDI相关的一些新兴的充满活力的问题,并描述新的系统架构如何在实现更理想的能源和海水淡化性能中发挥作用。
There is a growing interest in minimizing the energy and cost associated with desalination. To do this, various new desalination systems and approaches are being explored. One growing area of interest revolves around electrochemical separations for deionization. Electrochemical separations primarily consist of technologies which either intercalate or electroadorb species of interest from a bulk mixture. This can be conducted through polarizing a battery electrode, or more commonly a capacitive electrode. One example is the technology capacitive deionization (CDI). CDI is being investigated as a means to augment the current state of the art, and as a stand-alone brackish water treatment technology. Despite the potential of this technology, there is still much that is not known regarding the energetics and efficiency of both the desalination and brine formation process. Here, blue refrigeration is a term used to broadly describe desalination cycles and processes. The analogy aims to compare the energetics associated with a desalination cycle to the energetics well studied in thermal refrigeration cycles. This perspective aims to evaluate some of the emerging energetic issues associated with CDI, and to describe how new system architectures may play a role in achieving more ideal energy and desalination performance.
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